We Can Help Your Projects Grow

CEEDLING OPEN

Ceedling builds on the powerful Unity unit testing framework for C, and manages your test builds, complete with optional mocks and stubs. It enables C developers to test C systems without leaving their familiar C landscape.

ThingamaByte planted Ceedling before we were even ThingamaByte. We are cultivators and nurturers of Ceedling and will continue to do so. Ceedling will always be free to the community and our primary goal.

Ceedling ASSIST

Ceedling Assist is our new service. Are you looking for more focused support than forums and volunteers? We’re here to help! Reserve a block of assistance and then use it as you need it. We assist project setup and configuration. We assist testing best-practices. We even assist plugin development or Ceedling feature updates! Get prioritized support now!

Ceedling Pro

All that you love about Ceedling Pro and friends, plus proven environments, toolchains, configurations and test rigs for popular targets & platforms!

Ceedling Pro builds on the success of Ceedling Open and adds mixin yaml files and images, ready to be dropped into your system to alleviate your tool-configuration headaches!

SPROUTING SOON

Ceedling Certified

All the C-centric philosophies and magic of Ceedling Pro, packaged with reliable certified toolchains and pre-certified for use in safety industries. We understand how much work software certification can be… so let us handle the toolchain certification so you can get back to doing what you do best: growing your safety-critical systems.

SPROUTING 2026