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Yabasic (Yet Another Basic)

Hacker News · May 12, 2026, 10:33 AM

Key takeaways

  • Yabasic (Yet Another BASIC) is a free, open-source BASIC interpreter for Microsoft Windows and Unix platforms. 2 Yabasic was originally developed by Marc-Oliver Ihm.
  • A version optimized for Be OS, ZETA and Haiku. 4
  • A port of Yabasic to the Fltk toolkit called "Flyab" was under development.

Yabasic (Yet Another BASIC) is a free, open-source BASIC interpreter for Microsoft Windows and Unix platforms. 2 Yabasic was originally developed by Marc-Oliver Ihm. From version 2.77.1, the project adopted the MIT License and the source code was moved to Git Hub to encourage others to participate in its development. 3

A version optimized for Be OS, ZETA and Haiku. 4

A port of Yabasic to the Fltk toolkit called "Flyab" was under development. It would have been source-compatible with programs written in yab, a variant of Yabasic that enables graphical programs to be written using the BeOS API. After BeOS and its successor ZETA finally were gone, the team members around yab for BeOS decided to move to Linux and therefore chose FLTK to implement the UI parts. Ports for Microsoft Windows, Mac OS X, and Linux would have been possible. Flyab added the ability to Yabasic to create native graphical user interfaces on all supported platforms. Main difficulty was to fully implement the layout commands to FLTK, as used from the BeOS version. citation needed As of November 2008, the project appears to be halted.

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