Most digital cameras produce EXIF files, which are JPEG files with extra tags that contain information about the image.

SciPy supplements the popular NumPy module (python-numpy package), gathering a variety of high level science and engineering modules together as a single package.

NETGEN is an automatic 3d tetrahedral mesh generator. It accepts input from constructive solid geometry (CSG) or boundary representation (BRep) from STL file format. NETGEN contains modules for mesh optimization and hierarchical mesh refinement.

GNU CLISP is a Common Lisp implementation. It conforms to the ANSI Common Lisp standard, and offers many extensions. It runs on all desktop operating systems (GNU and Unix systems, macOS, Windows) and is particularly memory-efficient.

DokuWiki is a wiki mainly aimed at creating documentation of any kind. It is targeted at developer teams, workgroups and small companies. It has a simple but powerful syntax which makes sure the datafiles remain readable outside the wiki and eases the creation of structured texts. All data is stored in plain text files -- no database is required.

This is the GNU C compiler, a fairly portable optimizing compiler for C.