The libzio provides using fopencookie(3) of the glibc or funopen(3BSD) together with zlib and libbzip2 an API to read or write gzip/bzip2 files with streams. Libzio uses the GNUC weak facility to allow programs to be linked against zlib or libbzip2 only.
This is a small C-library to create an maintain the tray icons in your own programs and a set of tiny lightning-fast trayicon utilities to show the cpu-load, mem-load, xkb-layout & mixer-volumes.