libgeotiff is a library (normally built on top of libtiff) for reading and writing coordinate system information from/to GeoTIFF files. It includes CSV files for expanding projected coordinate system codes into full projections definitions and examples of transforming the definitions into a form that can be used with the PROJ.4 projections library. It also includes the sample applications listgeo (for dumping GeoTIFF information in readable form) and geotifcp (for applying geotiff tags to an existing TIFF or GeoTIFF file).
libmikmod is a portable sound library, which used to be packaged with the MikMod module player, but is now released independently. It is capable of playing samples as well as module files, using the OSS driver for output, as well as ALSA and EsounD. Supported module formats include MOD, S3M, XM, IT, MED, MTM, and 669, to name a few.
LinAl was designed to bring together C++ and FORTRAN. At the same time LinAl is supposed to be easy to use, fast, and reasonably safe. The LinAl library is based on STL techniques and uses STL containers for the storage of matrix data and STL algorithms where feasible. Low level, algebraic operators, linear solvers, and eigenvalue solvers are implemented, based on calls to BLAS, LAPACK, and CGSOLX.
Lincity is an SVGALIB (Linux only) and X based city/country simulation game for Linux and other Unix platforms (Solaris, FreeBSD, HP_UX, AIX, SCO and IRIX). There is also a Win32 version (win95 and NT) available as a separate package. The game reminds a bit of SimCity but has it's own goals and methods to get there.