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CADSharp LLC is the premiere developer of custom software for Onshape using the Onshape API and FeatureScript, and any other software that touches it (e.g., PLM, ERP). We can also train your developers on how to use these technologies. We have provided custom programming services and training for resellers, individuals, startups, and Fortune 500 corporations on projects of any size. Services offered:

  • Add-ins, stand-alones, and FeatureScripts for Onshape for applications such as model geometry creation and analysis, automatic geometry creation, custom property processing, configuration ripping, connection / integration with third-party software, drawing automation, bulk import / export

  • Best practices consulting: Configure-Price-Quote (CPQ) software, design-for-automation, software development

  • Specialized developer training and online or at your location covering Onshape API and Onshape FeatureScript fundamentals, .NET development, and programming best practices

  • Responsive technical support for your development team through Slack or email

Interested in a quote? Read our Services FAQ and fill out the form below.


In 2022, CADSharp wrote a FeatureScript that streamlined the process of adding prebuilt wall panels to models of modular housing units, reducing a frequent 2-hour task down to just minutes.

I used the FeatureScript for several hours today. It is really a pleasure to use – so much more intuitive than my old config tables. And easy to make edge adjustments!
Ted B., Periscope Homes