Free 32/64/16-bit multi-platform Pascal and Object Pascal compiler
A 32/64/16-bit Pascal compiler for Win32/64/CE, Linux, Mac OS X/iOS, FreeBSD, OS/2, Game Boy Advance, Nintendo NDS and DOS; semantically compatible with Delphi, Borland Pascal and Mac Pascal (partially) with extra features, e.g. operator overloading.
English C is a meta-language. The project has changed over the time from the programming language that pretended to understand texts written in an English-like language to a self-describing language like the MIME and C programming language are.
C-style, ANT/cmdline preprocessor for java, xml and other files. Designed to run smoothly with IDEs and tools - all directives occur in comments specific to the file's type, making it syntactically valid. Line numbering (debug messages!) is preserved.
Objective Caml (OCaml) Elipse Plug-In
A Python to C++ compiler/translator written in Python. It uses modules to enable easy and fast adding of new functions.