Mercat is a light-weight, cross platform programming language. It is garbage collected and self hosting and produces portable byte-compiled binaries that can be executed on any platform with the appropriate interpreter. Interpreters are available for Linux, DOS (32-bit) and DOS (16-bit) and the interpreter source should be easily compilable for other platforms.
MacroSystem is a powerful C++ template system designed to separate data processing from content generation. It can do recursive macro replacing, nested if-else and ifnot-else constructs, and easy importing and exporting of macro files. It has been used to create dynamic Web content, email template systems, and many kinds of preprocessing utilities.
Linux-Kontor is a project for the development of a free business management software suite. Core components of this suite are the commodities, bookkeeping, accountancy, and inventory management modules. Platform-independence, Internet capabilities, and scalability are the three main design requirements. The developers have decided to use Java and a three-tier client-server architecture. The data is stored in an SQL database.
libcsc is a general programming library written in C. It contains balanced binary tree, lists (queue/stack), notification subsystem, BSD socket functions, etc. It also contains a small primitive kernel abstraction layer with a message queue, semaphore, shared memory, and tasking api implemented for Unix and vxWorks (an embedded realtime kernel). libcsc completely superceedes librt which is no longer being maintained.