This library provides useful functions commonly found on BSD systems, and lacking on others like GNU systems, thus making it easier to port projects with strong BSD origins, without needing to embed the same code over and over again on each project.

libev - a high performance full-featured event loop written in C. libev is a high-performance event loop/event model with lots of features.(see benchmark at http://libev.schmorp.de/bench.html)

liblist is a generic linked-list library for C. This is another library that has been apparently abandoned by its original author, Bradly C. Spatz. Stephen L. Arnold <nerdboy> imported this library into Gentoo's portage because Ferret supposedly requires it. His last release, liblist-2.12, includes a few modifications to allow building with fewer warnings and fixes.

libgds is a C library of generic data structures.

一個可以轉換簡體文字到繁體文字的工具：convert text file encoding to utf-8／replace Simplified Chinese characters to Traditional Chinese characters automatically.

regex - Henry Spencer's regular expression libraries