Custom Software Development
Software built around the way you work.

When off-the-shelf software can't do what you need, we build it. From Inventor and Vault add-ins to AutoCAD plugins, system integrations and custom engineering tools, we create software that fits your workflow.
When standard software isn't enough
Every engineering business has tasks that are slow, repetitive or require people to move information between systems.
That's where custom development delivers the biggest return.
Whether it's a simple automation or a fully integrated application, we build software that removes repetitive work and improves the way your team operates.
What we build
Inventor add-ins
Custom tools that automate modelling, enforce standards, create exports and connect Inventor with your business systems.
AutoCAD plugins
Automate drafting tasks, batch processing, block management and custom commands tailored to your workflows.
iLogic automation
Create design rules that drive configurations, automate parameter changes, manage assemblies and generate drawings automatically.
Drawing automation
Automatically populate title blocks, generate PDFs and DXFs, extract BOMs, manage revisions and create complete drawing packages.
Vault customisation
Custom lifecycles, approval workflows, automated notifications, naming rules, validation and Job Processor extensions.
ERP and system integration
Connect Inventor and Vault with ERP, MRP and production systems to eliminate duplicate data entry and keep information synchronised.
Existing software? We can build on it.
Not every project starts from scratch.
Many clients already have internal tools, legacy software or applications built by developers who have since moved on.
We can review the existing software, improve it, add new features, resolve compatibility issues and document everything properly so your business remains in control.
The source code always belongs to you.
Recent projects
Inventor add-ins for engineering automation
Vault workflow customisation
Engineering document management integrations
OpenText and Dynamics 365 integrations
Automated drawing publishing
Structural exports to SpaceGass
Custom engineering productivity tools
If we've built something similar before, we'll show you the closest example.
Typical investment
| Project | Investment | Timeline |
|---|---|---|
| Small tool or script | $3,000–$7,000 | 1–2 weeks |
| Custom add-in | $7,000–$15,000 | 2–4 weeks |
| Multi-feature application | $15,000–$30,000 | 4–8 weeks |
| Full software platform | $30,000–$50,000+ | 8–16 weeks |
Every project includes specification, development, testing, deployment and training, with ongoing support until everything is running smoothly.
Why ModernCAD?
We've spent more than 15 years building software for engineering and manufacturing businesses.
As an Autodesk Developer, we understand the platforms your team already relies on and know how to extend them with reliable, maintainable software that solves real business problems.
Let's build the tool you wish you had
Tell us about your workflow, what's slowing your team down and what you'd like the software to do. We'll recommend the simplest solution – whether that's a script, a custom add-in, a system integration or a completely new application.
Start the conversation