At4J provides Java support for reading and creating Zip and Tar archives. It also comes with third-party compression libraries for bzip2 and LZMA support. At4J supports more Zip capabilities and compression methods than Java's built-in Zip classes, such as Unix file metadata and bzip2 compression.
a high-level audio API. It can play Ogg Vorbis, MP3, FLAC, uncompressed WAV, AIFF, MOD, S3M, XM, and IT files. For audio output, Audiere supports DirectSound or WinMM in Windows, OSS on Linux and Cygwin, and SGI AL on IRIX
Bibster is a Java-based system which assists researchers in managing, searching, and sharing bibliographic metadata (e.g. from BibTeX files) in a peer-to-peer network.
library implementing dynamic bitvectors with several types of on-the-fly, adaptive compression. Designed for use in databases, search systems, scientific projects.