libclc is a project undertaken by comp.lang.c regulars in order to provide a portable API for most useful and common programming tasks. It aims at providing services for the following tasks among others: strings, file I/O, logging & error recovery, memory management, base conversion, date & time, sorting & searching, hashing, lists, queues, stacks, trees & other abstract data structures, random numbers, crypto, database, graphs.

This is academic for me, since I don't usually program in C anymore, but its interesting to watch. Activity related to this library seems to have dropped off on comp.lang.c, however.