I have been working a C library for the past four years. It was originally designed for the compiler I am writing. However, I realized many of the components could be reused, which gave birth to Jez Toolkit (JTK). Currently, the library implements collections, unit tests, file I/O, and other modules. The library is a well designed alternative to Glib. I need some help to implement other powerful features such as regression, networking, concurrency, etc.
You can check out the repository here.
https://github.com/itsonecube/jtk/tree/dev