Yabasic (Yet Another BASIC) is a free and open-source BASIC interpreter for Windows and Unix platforms. Yabasic was originally developed by Marc-Oliver Ihm, who released the last stable version 2.77.3 in 2016. From version 2.77.1, the project has adopted the MIT Licence as well as the source code being moved to GitHub to encourage others to participate in its development.

http://www.yabasic.de/

Yabasic