Info-ZIP portable compression/archiver utilities (Zip, UnZip, WiZ, etc.)
A portable version of the ARJ archiver, available for a growing number of DOS-like and UNIX-like platforms on a variety of architectures.
lzop is a file compressor similar to gzip. Its main advantages over gzip are much higher compression and decompression speed, at the cost of some compression ratio. lzop uses the LZO library for compression services.
Larsen Commander for OS/2 Warp and eCS. Consists of two parts; 1) the underlying C++ G-Lib framework that build directly on top of native 32 bit OS/2 APIs and 2) the Larsen Commander application it self, written in C++ on top of that G-Lib framework.
EBML, or Extensible Binary Meta-Language, is a simple XML like binary language for describing data in structured style. EBML was originally designed for use in the Matroska project, but the developers saw that EBML was very flexible and extensible.