libnfo is a small library used to parse and write NFO files. NFO files are used to store metadata information on many multimedia files. The NFO file format is used by Enna and XBMC Media Centers, for example.
libonion is a lightweight library that helps you to add HTTP (and HTTPS) functionality to your programs. With it you can build small servers with minimal memory and CPU footprint, which makes it ideal for embedded systems and to add HTTP functionality to existing programs.
libpff is a library and tools to access the Personal Folder File (PFF) and the Offline Folder File (OFF) format. PFF is used by Outlook in PAB (Personal Address Book), PST (Personal Storage Table), and OST (Offline Storage Table) files.
libpfrng is a userspace library which provides a high-quality but slow random number generator based on CPU timing jitter. It passes Diehard, FIPS, NIST, and entropy tests, and is high-rated by CAcert RNG test.