CMake - CMake is an open-source, cross-platform family of tools designed to build, test and package software.
Courseroot - Biggest online course database on the web
SCons - SCons is an Open Source software construction tool—that is, a next-generation build tool.
Teachable - Create and sell beautiful online courses with the platform used by the best online entrepreneurs to sell $100m+ to over 4 million students worldwide.
Ninja Build - Ninja is a small build system with a focus on speed.
Courses - Launch Online Courses on top of your Shopify store in 5 mins