Build, Modernise, and Scale with Confidence

Ecommerce, legacy upgrades, and custom .NET software for Australian organisations. We look at the system you have before anyone talks about a rebuild.

Australian .NET team. Assess first. Then decide the work.

CoSource development team - diverse group of developers and designers

Our Services

Ecommerce, legacy modernisation, and custom .NET software, scoped after we see what you already run.

Ecommerce Development

Online stores that connect to the inventory, ERP, and accounting systems you already use.

Legacy Software Upgrades

Modernise Access databases, VB6 apps, and other legacy systems in .NET, after we assess what is worth keeping.

Custom Software Development

Custom .NET software, scoped after we look at the processes and systems you already have.

Why Choose CoSource?

Experience, a wide stack, and clear ownership of the code we write.

More than 25 years of Software Development

Extensive experience in software development across various platforms and industries.

Experienced with a wide variety of technologies and platforms

From Access and VB6 through to current .NET and ecommerce platforms. We work with the stack you already have.

Free consultation to help you decide the work

A free 30-minute discovery call. We look at the system you have and give you a recommendation you can take to a manager.

Available 24/7 for ongoing support and maintenance

Round-the-clock support ensures your systems run smoothly and issues are resolved quickly.

You get full ownership of the software

You own the software. Source code and documentation are yours.

Retro computer with AI brain and coding interface

Look at the system first. Then decide the work.

Ecommerce, legacy upgrades, and custom .NET software for teams that need the current system understood before anyone quotes a rebuild.

25+
Years in
Service
100+
Successful
Projects
100+
Satisfied
Clients

Featured Case Study

See how we helped transform a business

B2B Ecommerce

NESS B2B ecommerce integration

Take-over and maintenance of NESS’s nopCommerce B2B store at ness.com.au, integrated with Microsoft Dynamics NAV 2018, plus work on smartness.com.au. The job covered SEO and Google indexing, the NAV integration, and security.

nopCommerce B2B + Microsoft Dynamics NAV 2018
Take-over and ongoing maintenance: ness.com.au and smartness.com.au
SEO / indexing and a security pass
NESS B2B ecommerce
NESS B2B ecommerce
nopCommerce and Microsoft Dynamics NAV 2018

What Our Clients Say

What clients have said

CoSource is an innovative and professional company to partner with, they have provided Data#3 with valuable software development services. CoSource lived up to their reputation to be able to deliver to tight deadlines. We look forward to a continued relationship with CoSource on future software development projects.
John Gunning, Solution Architect - Data#3

Ready to talk through the system you have?

Book a free 30-minute discovery call. You leave with a clearer next step, not a rebuild estimate pulled from thin air.