Top Custom Software Development Companies in Australia

Looking for cutting-edge custom software solutions in Australia? The Land Down Under is home to a vibrant tech scene, where innovative software development companies are transforming businesses with tailored digital tools. From Sydney’s bustling startups to Melbourne’s tech hubs, these firms excel in crafting bespoke applications, leveraging AI, cloud computing, and agile methodologies to drive…

Carl Hill

September 4, 2025

25 min read 25 min

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Whether you’re a small business seeking a game-changing app or an enterprise needing scalable systems, Australia’s top developers deliver results that blend creativity with technical prowess. Dive into our guide to discover the leading custom software development companies in Australia, ready to turn your vision into reality with world-class expertise.

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Top 20 Custom Software Development Agencies in Australia

Discover our carefully curated list of the Top 20 Custom Software Development Companies in Australia, designed to help businesses find the perfect technology partner. We researched leading firms based on expertise, innovation, client reviews, and proven results.

Whether you’re a startup or an enterprise, these companies specialize in delivering tailored solutions that drive growth and efficiency. From mobile apps to enterprise systems, explore Australia’s best software developers who transform ideas into powerful digital products.

1. EB Pearls: Best Custom Software Development Services Australia

Website: www.ebpearls.com.au

Best for: Delivering high-impact, intuitive custom software, mobile apps, and websites with evidence-based engineering and user-centric design. Trusted by brands like Vodafone & AGL.
Avg. Hourly Rate: $40/hr
Services: Mobile App Development, Web Development, Custom Software Development, AI Development, Blockchain, UX/UI Design, eCommerce, Software Testing, Digital Marketing, Staff Augmentation, DevOps, SEO & Content Marketing
Technologies: Node.js, React.js, iOS (Swift/Objective-C), Android, Flutter, React Native, WordPress, Shopify, Laravel, .NET
Founded in: 2004
No. of employees: Approx. 320+
Headquarters: Sydney, NSW, Australia
Top Clients: Vodafone, AGL
Just Create App Rating: 9.5

EB Pearls is a premier Australian custom software development company that has been setting benchmarks in the industry since 2004. Known for its innovative approach, EB Pearls focuses on building scalable, reliable, and user-centric digital solutions. Over the years, it has delivered hundreds of mobile applications, enterprise platforms, and tailored software systems that empower businesses to grow faster and compete more effectively in the digital space. Its expertise covers industries like telecom, retail, eCommerce, fintech, and enterprise solutions, making it a trusted choice for startups and established enterprises alike.

With a team of over 320 skilled professionals, EB Pearls combines technical excellence with creative problem-solving to deliver measurable results. The company has earned global recognition through awards and accolades for outstanding design and development projects. Clients such as Vodafone and AGL highlight its ability to deliver high-impact solutions that drive innovation and transform business operations across industries.

2. StepInsight: Affordable Custom Software Development Australia

Website: www.stepinsight.com.au

Best for: Custom enterprise web and mobile applications, legacy system modernization, systems integration, fast MVP-first delivery, and digital transformation.
Avg. Hourly Rate: $50–99/hr
Services: Custom Software Development, Mobile App Development, Enterprise Web Applications, Legacy System Modernization, Systems Integration, Cloud & API Solutions, AI, Digital Transformation
Technologies:
Founded in: 2017
No. of employees: 10–49
Headquarters: Sydney, NSW, Australia
Top Clients:
Just Create App Rating: 9.2

StepInsight is a dynamic and agile custom software agency anchored in Sydney since 2017. With a lean team of 10 to 49 specialists, they excel in crafting enterprise-grade web and mobile applications, modernizing legacy systems, and delivering seamless systems integration. Emphasizing MVP-first development, StepInsight helps clients bring scalable, intuitive, and high-impact digital solutions to market quickly. Their pragmatic, user-centric methodology is built on deep collaboration, thoughtful discovery, and a commitment to solving real business problems with precision and speed.

Combining strategic foresight with technical proficiency, StepInsight supports digital transformation across industries by accelerating innovation and ensuring operational efficiency. Clients benefit from their transparent approach, fast delivery cycles, and emphasis on long-term partnership rather than just transactional vendor relationships. Their Sydney headquarters, complemented by offices in Brussels and Austin, reflects their global capability and reach.

3. Appello Software: Enterprise Custom Software Development Company

Website: www.appello.com.au

Best for: Full-cycle custom software, mobile, and web development with strong UX/UI and enterprise-grade solutions across diverse industries.
Avg. Hourly Rate: $100–149/hr (Clutch estimate)
Services: Digital Advisory, Digital Product Design, Software Development (Web, Mobile, Wearable), AI, AR/VR, CRM, ERP, Project Support including QA and Technical Maintenance
Technologies: .NET, Bootstrap, Flutter, GraphQL, Java, JavaScript, Kotlin, Node.js, PHP, Python, React, Ruby on Rails, Swift, TypeScript, Vue.js
Founded in: 2015
No. of employees: 50–249
Headquarters: Sydney, NSW, Australia
Top Clients: EY, WeWork, BlackRock, Starbucks, Foxo, QUT, Sydney Council
Just Create App Rating: 9.3

Appello Software is a global digital product development firm founded in 2015 and headquartered in Sydney. With a team of 50–249 multidisciplinary professionals, Appello excels in designing and building tailored digital experiences from discovery through to support. Their expertise spans enterprise software, mobile and web applications, AI, AR/VR, CRM, and ERP systems, with strong UX/UI design at the core of their workflow.

Committed to delivering modern and user-centric digital products, Appello serves a broad range of clients from startups to Fortune-level enterprises. Their notable portfolio includes clients like EY, Starbucks, and BlackRock, underscoring their ability to handle complex and impactful projects with technical sophistication and strategic clarity.

4. WorkingMouse: Leading Custom Software Development Firm

Website: www.workingmouse.com.au

Best for: Legacy system modernization and digital transformation for government and enterprise via secure, scalable custom software built with low-code, DevOps, and automation.
Avg. Hourly Rate: Undisclosed (projects range from AUD 20,000–500,000)
Services: Consulting, Full-stack Development (web & mobile), Legacy System Modernisation, Platform Engineering with Codebots, DevOps, Talent as a Service, Local AI infrastructure
Technologies: Cloud-based custom applications; proprietary tools like Codebots and Jidoka for platform engineering and automation
Founded in: 2012
No. of employees: 50–249
Headquarters: Brisbane (Milton), Queensland, Australia
Top Clients: Department of Defence, Queensland Health, Transport and Main Roads, Master Electricians Australia, Moreton Island Adventures, Access Intell, Hitachi
Just Create App Rating: 9.4

WorkingMouse is a leading Australian sovereign software development agency specializing in legacy system modernization and digital transformation. Since 2012, the company has been committed to building secure, scalable, and future-ready solutions for enterprise and government. By leveraging low-code development with their proprietary Codebots platform and automation tools like Jidoka, WorkingMouse accelerates delivery while maintaining exceptional quality and compliance. Their team focuses on solving mission-critical problems with innovative technology that empowers clients to achieve long-term digital resilience.

The agency has partnered with prestigious clients including the Department of Defence, Queensland Health, and major enterprises to streamline operations and modernize outdated systems. With expertise in cloud-based platforms, DevOps, and AI infrastructure, WorkingMouse offers end-to-end services that combine agility, innovation, and strong governance. Their transparent and collaborative approach makes them a trusted partner for organizations embarking on complex digital transformation journeys.

5. Buzinga: Custom Application Development Services Australia

Website: www.buzinga.com.au

Best for: Award-winning mobile app development focused on user engagement and mobile-first strategies.
Avg. Hourly Rate: $100–149/hr
Services: Mobile App Development (iOS & Android), Augmented Reality, Artificial Intelligence, Geolocation Services, Cloud-Based Solutions, Web-Back End & Mobile Strategy Consulting
Technologies: AR, AI, Geolocation, Cloud services
Founded in: 2012
No. of employees: 2–9 (at time of listing)
Headquarters: Richmond, Victoria, Australia
Top Clients: (not specified)
Just Create App Rating: 9.0

Established in 2012 in Richmond, Victoria, Buzinga quickly earned acclaim for delivering user engagement–driven mobile experiences. The company specialized in crafting cutting-edge mobile apps that harnessed AI, AR, geolocation, and cloud-based technologies to help businesses launch new revenue streams and enhance customer experience. Their strategic consulting combined with creative execution allowed clients to scale and stand out in competitive markets, and their solutions were used in multiple countries.

Despite its promising growth and award-winning output, Buzinga entered liquidation due to unsustainable rapid expansion. Nevertheless, their legacy remains in the impactful apps they developed and the innovative approach they brought to mobile-first strategies—setting a high benchmark for user-centric app design in Australia.

6. Sibedge: Professional Custom Software Development Agency

Website: sibedge.com

Best for: Full-cycle agile software engineering, business automation, digital transformation, and AI-enhanced solutions for global enterprises.
Avg. Hourly Rate: $26-49/hr
Services: Custom Software Development, IT Staff Augmentation, QA & Testing, Technical Support & DevOps, Agile “Squad Product” Development
Technologies: Java (Spring, Kafka), JavaScript (React, Angular, Node.js), C# (.NET), Python, Swift, Kotlin, BI solutions, CRM/ERP systems
Founded in: 2006
No. of employees: 200+
Headquarters: Australia (Perth, Western Australia)
Top Clients: Aura (Hotspot Shield), WhoTrades, PropertyMinder, Gestalt Diagnostics, BPC Banking Technologies, Mail.ru Group
Just Create App Rating: 9.1

Sibedge is a globally oriented software engineering firm based in Australia, providing full-stack development, agile product squads, DevOps, QA, and IT staff augmentation. With more than 15 years of experience and over 200 professionals across locations including Australia, the US, Armenia, Turkey, and beyond, the company has delivered upwards of 350 custom projects worldwide. Their focus on transforming fintech, medtech, edtech, and enterprise platforms drives client success through scalable, high-impact digital innovation.

Embracing a human-centric agile approach, Sibedge combines product thinking with project delivery to drive partnerships founded on trust and accountability. Their implementation of proprietary and open-source tools enables automation, maintenance, and continuous improvement. Backed by top industry clients such as Aura and Mail.ru, Sibedge balances technical rigor with creative flexibility to empower clients in achieving complex digital goals at global scale.

7. Groove Technology: Custom Application Development Services Australia

Website: www.groovetechnology.com

Best for: Flexible engagement models such as staff augmentation and dedicated teams, delivering scalable custom software, mobile apps, AI, ML, IoT, BI, ERP & CRM, and e-commerce solutions
Avg. Hourly Rate: $100–149/hr
Services: Custom Software Development, Mobile App Development, Web App Development, AI and Machine Learning, Data Science and Analytics, IoT Development, ERP & CRM Development, E-commerce, PWA, Staff Augmentation
Technologies: Full-stack frameworks (JavaScript, Python, .NET), mobile (React Native, Flutter), cloud-native, microservices, AI/ML, IoT, BI tools
Founded in: 2016
No. of employees: 100–249 (230+ across Australia, Vietnam)
Headquarters: South Melbourne, Victoria, Australia (with offices in Vietnam)
Top Clients: (not specified)
Just Create App Rating: 9.0

Groove Technology is an Australian software outsourcing and custom development firm founded in 2016 and headquartered in South Melbourne, with a robust presence in Vietnam. The company offers flexible models, including staff augmentation and dedicated teams, to support businesses in building digital products faster and more efficiently. With a team of over 200 skilled professionals, Groove Technology delivers complex solutions ranging from AI/ML-powered analytics and IoT platforms to e-commerce, ERP/CRM, and mobile applications. The company is recognized for its high 97% client retention rate and Clutch rating of 5 across key development categories.

Driven by transparency, quality, and long-term collaboration, Groove simplifies digital transformation for clients across industries like retail, logistics, finance, and HR. Their hybrid structure—combining Australian leadership with offshore execution—allows balancing local expertise with global delivery, making them a trusted partner for innovative and scalable software development projects.

8. XAM Consulting: Best Custom Software Development Services Australia

Website: xam.com.au

Best for: Design-driven digital services including custom software, UX/UI design, mobile & web applications, AI and cloud consulting
Avg. Hourly Rate: Inquire
Services: Custom Software Development, Web & Mobile App Development, UX/UI Design, Cloud Consulting (Azure, AWS, Google Cloud), Product Design, Application Testing
Technologies: .NET, React, Xamarin, Angular, Flutter, Node.js, Vue.js
Founded in: 2014
No. of employees: 50–249
Headquarters: Sydney, NSW, with offices in Melbourne and Brisbane
Top Clients: Telstra, UGL, Sydney Water, Unilever, Vodafone UK, Ogilvy & Mather, Kmart, University of South Australia, INX, Jobadder
Just Create App Rating: 9.0

XAM Consulting is a design-centric software and digital services agency founded in 2014 in Sydney, Australia. With additional offices in Melbourne and Brisbane, XAM delivers bespoke solutions across digital product design, UX/UI, custom app development, and cloud integration. Their multidisciplinary team brings expertise in modern stacks like .NET, React, Xamarin, Flutter, and Node.js to create high-quality, user-focused experiences. XAM caters to a diverse client base, including Telstra, Vodafone UK, and Unilever, reflecting their ability to meet enterprise-level demands with creativity and technical finesse.

Driven by design-led thinking and collaborative methodology, XAM combines strategic product design with agile development. Their cloud consulting services across Azure, AWS, and Google Cloud allow them to build scalable and secure digital platforms tailored for growth. Trusted by both startups and established organizations, XAM consistently delivers digital products that are visually compelling, technically robust, and business-aligned.

9. Catalyst IT Australia: Custom Software Development Outsourcing Australia

Website: catalyst-au.net
Best for: Enterprise custom software development using open-source technologies—especially in education, government, and not-for-profit sectors.
Avg. Hourly Rate: Not publicly disclosed
Services: Custom Software Development, Open Source Consulting, Design & Development, Learning Management Systems (Moodle, Totara, Mahara), CMS (Drupal, GovCMS), Cloud Hosting & Managed Services, SSO System Integration, e-Learning Assessment Solutions, Agile Software Delivery
Technologies: PHP, Laravel, React, Python, JavaScript, Java; open source frameworks such as Moodle, Totara, Drupal, Mahara
Founded in: 1997
No. of employees: Over 350 specialists globally
Headquarters: Sydney, NSW, Australia
Top Clients: Monash University, Kmart Australia, NSW Government, Higher Education Institutions, Government Bodies, Not-for-Profit Organizations
Just Create App Rating: 9.3

Catalyst IT Australia is a multi-region, open-source software authority established in 1997. Specializing in enterprise-grade custom solutions, they empower organisations across education, government, and non-profit sectors through their mastery of platforms like Moodle, Totara, Mahara, Drupal, and GovCMS. Their team of over 350 specialists delivers secure, scalable learning management systems, content management solutions, system integrations, and managed services with ISO 27001 certification.

With over two decades of open-source expertise, Catalyst operates with a client-centric, agile approach that emphasizes resilience, flexibility, and long-term partnership. Their successful implementations—including platforms for major universities, state governments, and corporate training—highlight their ability to deliver high-impact, custom digital learning environments aligned with organisational goals.

10. Goji Labs: Leading Custom Software Development Firm

Website: gojilabs.com
Best for: Full-stack product strategy, UX/UI design, and bespoke software development for web, mobile, and SaaS, with a strong focus on education, fintech, healthtech, nonprofit, and enterprise clients.
Avg. Hourly Rate: $149/hr
Services: Product Strategy & Audits, UX Research & UI Design, Web App & Mobile App Development, Agile Software Development, MVP Development, Dedicated Full-Stack Teams, AI Software, Custom Software Development, SaaS Platforms, FinTech, HealthTech.
Technologies: Agile development methodologies, full-stack frameworks for web and mobile, UX design tools, AI-enabled features for scalable apps.
Founded in: 2014
No. of employees: Under 49
Headquarters: Melbourne, Victoria, Australia (with global presence)
Top Clients: WHO, WWF, UCLA, City of Los Angeles, plus a diverse mix of startups, nonprofits, and Fortune 500 enterprises.
Just Create App Rating: 9.3

Goji Labs is a design-led product agency established in 2014 with fewer than 50 talented in-house professionals. The company excels in transforming complex ideas into intuitive digital products by combining product strategy, UX/UI design, and agile software development. With an impressive track record of launching over 400 digital products and helping clients raise over $1 billion in funding, they deliver solutions across sectors such as EdTech, FinTech, HealthTech, nonprofit, and enterprise platforms.

Their process starts with deeply understanding the client’s mission and includes discovery, UX audits, prototyping, strategy, and full-stack development. With a reputation for thoughtful design and timely delivery, Goji Labs is often praised for exceeding expectations and mitigating risks. Their international reach and focus on innovation make them an excellent partner for organizations aiming to design, build, and scale impactful digital products.

11. Suffescom Solutions Inc

Website: suffescom.com
Best for: Mobile app and cross-platform development, enterprise custom software, blockchain, AI, and Web3 solutions across diverse industries.
Avg. Hourly Rate: Inquire
Services: Mobile App Development (native and cross-platform), Enterprise Custom Software Development, Blockchain & Web3 (dApps, crypto exchanges), AI Development, Augmented Reality, MVP Development, Legacy System Modernization, White-Label Solutions, Maintenance & Support
Technologies: Native iOS/Android, React Native, Flutter, Blockchain platforms, AI integration, Web3 frameworks
Founded in: 2013
No. of employees: 250–499
Headquarters: Australia (with presence in USA, Dubai, Singapore, India)
Top Clients: Banking, healthcare, e-commerce, logistics, gaming, education, IT, government sectors (Fortune-status clients globally)
Just Create App Rating: 9.2

Suffescom Solutions Inc is a robust technology company with over a decade of experience delivering high-quality custom mobile and enterprise applications. Since its founding in 2013, the firm has established global operations with offices across Australia, the USA, Dubai, Singapore, and India. Known for its proficiency in both native and cross-platform app development, Suffescom also excels in pioneering work around Web3, blockchain dApps, and AI-infused software, serving verticals ranging from healthcare and finance to logistics and gaming.

Backed by strong recognition from Clutch, G2, GoodFirms, and DesignRush, Suffescom is celebrated for its transparent development process, end-to-end delivery, and 24/7 support. Their portfolio spans Fortune-tier clients and ambitious startups alike, illustrating their capacity to scale solutions globally while maintaining meticulous standards in security, innovation, and user experience.

12. Probey Services: Enterprise Custom Software Development Company

Website: probeyservices.com
Best for: End-to-end technology and digital marketing solutions—including software, mobile apps, web development, SEO, PPC, branding, and performance marketing—for businesses across Australia and globally.
Avg. Hourly Rate: Less than $25/hr
Services: Website Design & Development, Custom Software & IT Services, E-commerce (Shopify, WordPress), Mobile App Development (native and cross-platform), Digital Marketing (SEO, SEM, PPC, Social Media), Branding & Graphic Design, Online Reputation Management
Technologies: Web platforms including WordPress and Shopify; native and cross-platform mobile technologies; full-stack web & app development frameworks
Founded in: 2016
No. of employees: Approximately 250–300+
Headquarters: Sydney, Australia (with multiple global locations)
Top Clients: Diverse portfolio across industries and geographies
Just Create App Rating: 9.0

Probey Services is a dynamic full-service technology and digital marketing company founded in 2016. With over 250 skilled professionals, the firm offers a comprehensive 360-degree service suite—from custom software and web development to performance-driven digital marketing and branding. Their global presence spans Australia, the UK, USA, UAE, and India, enabling them to deliver culturally informed and scalable solutions tailored to client needs. Their strength lies in their integrated approach, blending technical acumen with creative strategy to drive measurable business growth.

Known for cost-effective delivery and transparent collaboration, Probey Services caters to a wide spectrum of clients—from startups to established enterprises—in sectors such as fintech, healthcare, e-commerce, and enterprise IT. With a client-centric ethos and agile execution, they consistently deliver projects on time, on budget, and aligned with client visions across domains and borders.

13. Magneto IT Solutions: Affordable Custom Software Development Australia

Website: magnetoitsolutions.com
Best for: Award-winning end-to-end B2B/B2C/D2C and marketplace digital commerce solutions, especially in modular and composable commerce.
Avg. Hourly Rate: $25–49/hr
Services: Custom Software & Web Development, eCommerce (Adobe Commerce, Magento, Shopify, Composable Commerce), Mobile App Development, Digital Marketing, PIM/CRM/DAM/OMS Integration, MVP & SaaS Solutions, DevOps
Technologies: Magento, Adobe Commerce, Shopify Plus, OroCommerce, Commercetools, PIM, DAM, ERP/CRM integrations, Agile stacks
Founded in: 2009 (active since ~2010)
No. of employees: 50–249 (120+ professionals)
Headquarters: Blacktown, NSW, Australia (with global offices)
Top Clients: 250+ brands across B2B/B2C/D2C/Marketplace segments
Just Create App Rating: 9.0

Magneto IT Solutions is a proven leader in digital commerce development in Australia, delivering customized solutions since 2009. Specializing in B2B, B2C, and marketplace platforms, the company helps businesses scale efficiently through composable commerce, PIM/CRM/DAM integrations, and agile development. With a balanced onshore-offshore model and a team of over 120 skilled professionals, Magneto empowers brands to launch intuitive stores, enhance customer engagement, and streamline product experiences across channels.

Clients benefit from streamlined user interfaces, improved performance, and enhanced revenue—all backed by Magneto’s 4.9+ client review ratings and global delivery footprint. Their ongoing partnerships across diverse sectors—retail, manufacturing, distribution, and e-commerce—highlight their ability to adapt, innovate, and exceed expectations through high-impact digital commerce solutions.

14. aTeam Soft Solutions: Hire Custom Software Developers

Website: ateamsoftsolutions.com
Best for: Full-cycle custom web and mobile application development, MVPs to scalable platforms, cloud-native and serverless solutions across industries
Avg. Hourly Rate: Under $25/hr
Services: Web & Mobile App Development, Custom Software Engineering, MVP to Scale Product Engineering, Serverless & Cloud-Native Development, AI & Workflow Automation, IT Staff Augmentation, SEO Services
Technologies: React, Angular, Vue, Flutter, Node.js, .NET, Java, Python, AWS, Azure, GCP, REST, GraphQL, CI/CD, OWASP-aligned security tools
Founded in: 2014
No. of employees: Approx. 250–499
Headquarters: Worongary, Queensland, Australia (with global offices in India, USA, Maldives)
Top Clients: Startups and enterprises needing scalable digital products
Just Create App Rating: 9.1

aTeam Soft Solutions is a digital engineering and custom software development company with roots in Australia and a global presence that includes engineering hubs in India, the Maldives, and the USA. Since its founding in 2014, the company has guided clients from initial MVP concepts to full-scale digital platforms, employing agile, secure, and tool-driven workflows. They support scalable cloud-native architectures and serverless deployments, combining technical depth with cost-conscious delivery by keeping hourly rates under $25.

Widely praised for reliable communication and dependable delivery, aTeam Soft Solutions serves clients ranging from tech-savvy startups to enterprise teams. Their cross-disciplinary capabilities and tooling—spanning mobile, web, cloud, automation, and SEO—make them a trusted development partner in rapidly evolving markets. Their emphasis on transparency and long-term value aligns them with clients seeking enduring digital transformation.

15. Azumo: Custom Application Development Services Australia

Website: azumo.com
Best for: Nearshore custom software, AI-driven web and mobile apps, data engineering, and intelligent enterprise solutions.
Avg. Hourly Rate: $50–$150 USD
Services: Custom Software Development, Mobile App Development, Web Application Development, AI & Machine Learning Solutions, UI/UX Design, Cloud Services, Data Engineering, Chatbot Development, DevOps, Staff Augmentation, Dedicated Teams, Virtual CTO
Technologies: .NET, JavaScript (Node, React, Angular), Python, Java, PHP, DevOps tools, Mobile frameworks, AI/ML tools, Cloud platforms
Founded in: 2016
No. of employees: (not explicitly stated; implied mid-size)
Headquarters: Sydney, Australia (with nearshore delivery model)
Top Clients: Enterprise-level clients, including early customers like Twitter, Facebook, Omnicom, United Health (among others)
Just Create App Rating: 9.4

Azumo is a high-performing nearshore software development company based in Sydney. Since its founding in 2016, it has distinguished itself with an agile, client-aligned delivery model. The firm develops intelligent web and mobile applications, enterprise systems, data pipelines, AI/ML features, and chatbot solutions. Rated 4.9 on Clutch, Azumo is praised for its emphasis on quality, proactive communication, and real-time responsiveness, helping accelerate clients’ innovation and digital growth.

Built on a foundation of referrals—with 90% of new business coming from satisfied clients—Azumo pairs experienced engineers with dedicated teams, virtual CTO resources, and flexible staffing models. The company’s focus on nearshore collaboration ensures alignment in time zones, cultural compatibility, and fast iteration. Trusted by brands like Twitter and United Health, Azumo offers a blend of technical depth and strategic partnership that supports long-term product success.

16. Mercury Development: Professional Custom Software Development Agency

Website: mercdev.com
Best for: High-quality, full-cycle custom software including mobile apps, web, desktop, IoT, wearables, and enterprise systems across industries.
Avg. Hourly Rate: $50/hr
Services: Custom Mobile & Web App Development, IoT & Wearable Solutions, UI/UX Design, Quality Assurance, Business Analysis & Consulting, Digital Transformation, Staff Augmentation
Technologies: Cross-platform frameworks, machine learning, DevOps, cloud-backend systems, responsive web, custom UI, AR/VR, sensor-based technologies
Founded in: 1999
No. of employees: 250–499
Headquarters: Melbourne, Victoria, Australia
Top Clients: Google, HSBC, Fitbit, Monster Energy, Burger King, Ford, Sony, Mars, Symantec, Dow, SAP
Just Create App Rating: 9.4

Mercury Development is a seasoned software development powerhouse established in 1999, known for delivering cutting-edge digital products to startups and Fortune 500 enterprises alike. Based in Melbourne, the company specializes in creating custom mobile, web, desktop, and IoT-enabled applications. With a multidisciplinary team of 250–499 experts, Mercury Development offers services that span from user-centered design and UX/UI through to AI, DevOps, and cloud backend systems.

Trusted by global brands—including Google, HSBC, Fitbit, and Sony—Mercury Development stands out for its consistent quality, transparency, and technical breadth. Whether building secure enterprise platforms or immersive user experiences, they excel at transforming complex ideas into high-impact solutions. Their proven track record of delivering more than 2,500 projects with over 50 million active users underscores their reliability and capability in the custom software space.

17. Groovy Web: Leading Custom Software Development Firm

Website: groovyweb.com.au
Best for: Agile, cost-effective full-stack development of web applications, mobile apps, MVPs, SaaS, browser extensions, bots, and enterprise web tools
Avg. Hourly Rate: Inquire
Services: Web & Mobile App Development, Custom Software & MVP Development, SaaS Platforms, MERN/MEAN Stack Solutions, Desktop & Browser Extension Development, Chatbot Development, UI/UX Design, Digital Marketing
Technologies: MERN Stack (MongoDB, Express.js, React.js, Node.js), MEAN Stack, Flutter, React Native, Angular, Vue.js, Electron.js, HTML/CSS, TypeScript
Founded in: 2015
No. of employees: 80–249 (growing from an initial team of 4)
Headquarters: Norwest, NSW, Australia (with global presence in India, UK, USA, Europe, Germany)
Top Clients: (not specified)
Just Create App Rating: 9.0

Groovy Web is a growth-oriented custom software and digital product agency founded in 2015, now comprising an agile team of over 80 professionals across multiple global offices. Known for its ‘Creators’ mindset, the company builds robust and scalable digital solutions—including web and mobile apps, SaaS platforms, MVPs, and custom enterprise software—by applying full-stack technologies like MERN, MEAN, Flutter, and Electron. With a focus on delivering projects on time and within budget, Groovy Web has completed over 500 projects for more than 250 satisfied clients.

Driven by passion and a streamlined development process, Groovy Web thrives on transforming ideas into user-friendly, secure, and high-performance products. Their commitment to quality, end-to-end delivery, and retention growth reflect their reliability and innovation in delivering digital solutions across diverse industry verticals worldwide.

18. Fingent: Enterprise Custom Software Development Company

Website: fingent.com
Best for: AI-driven, enterprise-level custom software, including intelligent business applications, mobile and web apps, AR/VR/MR, data engineering, and cloud-native platforms
Avg. Hourly Rate: $25–49/hr
Services: Custom Software Development, Enterprise Software Solutions, Mobile & Web App Development, AR/VR/MR Experiences, AI & Machine Learning, RPA, Data Engineering & Analytics, Cloud-Native Applications, System Integration, SAP & ERP Solutions
Technologies: AI/ML, AR/VR/MR, RPA, Cloud Computing, Data Visualization, Enterprise Application Stacks, SAP, Odoo Platforms
Founded in: 2003
No. of employees: 250–999
Headquarters: Global presence including Australia (Melbourne, Sydney), USA, India, UAE
Top Clients: Mastercard, Sony, PwC, NEC, and clients across four continents
Just Create App Rating: 9.2

Fingent is a globally trusted custom software development company with over two decades of experience, committed to building intelligent, enterprise-ready digital solutions. Founded in 2003, the firm is ISO 27001-certified and drives innovation through services such as AI-fueled applications, AR/VR experiences, data engineering, cloud-native deployment, and RPA. With delivery centers spanning Australia, the US, India, and the Middle East, Fingent seamlessly translates complex business ideas into scalable and secure digital platforms that unlock operational efficiency and new revenue channels.

Serving clients such as Mastercard, Sony, PwC, and NEC, Fingent stands out for its AI-first development philosophy and deep domain expertise across industries. Their structured workflows and agile execution enhance time-to-market and foster long-term partnerships. By blending security-focused governance with emerging technologies, Fingent consistently helps organizations modernize, elevate user experiences, and thrive in an evolving digital landscape.

19. Closeloop Technologies: Hire Custom Software Developers

Website: closeloop.com
Best for: End-to-end custom software, digital transformation, AI, data engineering, CRM/ERP integrations, and modern cloud-native platforms
Avg. Hourly Rate: $25–49/hr
Services: Custom Software Development, Mobile & Web App Development, AI & Generative AI Integration, Data Engineering & Platform Modernization, ERP/CRM Consulting & System Integration, Business Process Automation, Cloud Engineering & DevOps
Technologies: Java, MERN, LAMP, React, Cloud Platforms (AWS, Azure, Google Cloud), AI/ML, CRM/ERP tools (Salesforce, NetSuite), Data Platforms (Databricks, Snowflake)
Founded in: 2011
No. of employees: 50–249
Headquarters: Mountain View, California, USA — with global delivery centers including India
Top Clients: Startups and Fortune 500s across industries, repeat clients with 99.9% satisfaction rate
Just Create App Rating: 9.3

Closeloop Technologies is a versatile software engineering and consulting firm founded in 2011, with headquarters in Mountain View and development hubs in India. They deliver comprehensive services across custom software development, mobile and web applications, AI-driven enhancements, CRM/ERP system integration, data engineering, and cloud-native architecture. Their agile boutique consultancy model ensures executive-level involvement across projects, blending U.S. leadership with offshore engineering excellence for adaptive, client-focused delivery.

The company is celebrated for its exceptional customer satisfaction—boasting a 99.9% repeat client rate—and was named among the fastest-growing U.S. companies by Inc. 5000 in 2024. With a focus on digital transformation, generative AI integration, and robust cloud solutions, Closeloop has evolved into a trusted partner for both startups and enterprise-level organizations worldwide.

20. Alliance Software: Custom Software Development Outsourcing Australia

Website: alliancesoftware.com.au
Best for: Bespoke enterprise-grade custom software, SaaS, and web applications for startups, corporates, and government
Avg. Hourly Rate: Not publicly disclosed
Services: Custom Software Development, Web Application Development, SaaS Development, Startup MVP Development, Enterprise Integration, Product Strategy, UX/UI Design, Ongoing Support and Maintenance
Technologies: .NET, PHP, JavaScript frameworks (React, Angular, Vue), SQL databases, cloud-based platforms, API integrations
Founded in: 1999
No. of employees: 50–100+
Headquarters: Melbourne, Victoria, Australia
Top Clients: Universities, corporates, and government agencies across Australia
Just Create App Rating: 9.2

Alliance Software is one of Australia’s longest-standing custom software development companies, established in 1999 and based in Melbourne. The firm has a proven record of helping startups launch scalable MVPs, building complex enterprise applications, and delivering SaaS platforms tailored to business objectives. Its team specializes in web applications, API integrations, and cloud-native systems, ensuring security, scalability, and long-term maintainability. Their collaborative approach combines product strategy, UX/UI design, and agile development to meet the needs of both startups and large organizations.

With over two decades of experience, Alliance Software has become a trusted partner for universities, corporates, and government bodies. Their ability to balance technical expertise with business insight allows them to deliver projects that drive real impact. By focusing on transparent processes and ongoing client support, Alliance Software has built a strong reputation as a reliable and innovative software partner in the Australian market.

Wrap Up

Exploring the Top 20 Purely Custom Software Development Companies in Australia provides businesses with a clear path to finding trusted technology partners. From startups to enterprises, these leading firms specialize in creating tailored web, mobile, and enterprise software that drives innovation, efficiency, and growth. With expertise spanning AI, cloud, SaaS, and digital transformation, each company on this list showcases proven excellence. Choosing from Australia’s best ensures high-quality, future-ready solutions that align with business goals and deliver measurable success.

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