Some guys over at Satakore, including vbt from SegaXtreme, have launched their project: the Game Basic database. The goal is to include every program developed for Game Basic for the Sega Saturn.
There are currently 14 entries on the site:
Bang Car
DECODER X
High Speed
High Speed +
Jidousha Game Sample / Car Game Sample
Lightning Gunner For Tech Saturn Original Version
Minimal Integratad Modeling and Attribute dsign System / MIMAS v1.01
Neptune II.V
Neptune IV
Neptune IV Demo
Saturn Blade
Saturn Vader
Virtua Mario / Super Mario
XEVI Mono