GNU Prolog is a free implementation (under GPL) of the logic programming language PROLOG. It can compile to native machine code which is extremely fast in execution. Another feature is the included constraint solver.
Advanced TECO dialect and interactive screen editor based on Scintilla
SciTECO is an interactive TECO dialect, similar to Video TECO. It also adds features from classic TECO-11, as well as unique new ideas.
Project development takes place here:
https://git.fmsbw.de/sciteco
The download archive is mirrored at Sourceforge, but for nightly builds check out:
https://sciteco.fmsbw.de/downloads/nightly/
nuBASIC is an implementation of an interpreter of the BASIC programming language and IDE.
It has been designed mainly for educational purposes and it is suitable for simple games, educational or small business programs.
This Shell allows you to have an easy text interface to probe your code. Your code must be related to a DLL library to interact with the shell. A template to implement this is provided. Project WEB: http://sites.google.com/site/f2ashell/