Agena is an interpreted procedural programming language.
Agena is a new easy-to-learn procedural programming language suited to be used in scientific, mathematical, scripting, networking, and many other applications. Binaries are available for Solaris, Windows, Linux, OS/2, Mac OS X, Raspberry Pi and DOS.
RPilot is a GPL'ed implementation of the IEEE-standard language PILOT. It is an interpreter written in ANSI C, and will work on any system with a standard C compiler
BASIC interpreter for the standard (SUS) character screen handling library, which fully corresponds to the Tiny BASIC standard. The code is thread-safe and can be embedded into other code. Can be used as a game or a minimalist challenge.
A small, self-hosting 16bit Forth system
VolksForth is a 16bit Forth System with the goal to produce a manageable Forthsystem for computer systems with restricted system resources.
A portable BASIC in the style of Microsoft 6502 BASIC (especially the Apple ][+ variant), with influence from GW-BASIC and Atari BASIC among others, with enhanced features, written in C for portability to computers large and small.