Yc is a collection of C utilities that can be considered an extended standard library.

There is an API for working with filesystems.

There is an API for timers.

There is an API for creating and managing child processes.

There are dynamic, data-oriented, data structures that are meant as C replacements for some of the C++ STL. There are currently has vectors (resizable arrays), strings, binary trees, general trees, stacks, and maps. It also has iterators for vectors, binary trees, general trees, and maps.

See the Modules for specifics.