Bajo licencia GNU. Por tanto, son libres las fuentes.

OpenSE BASIC is compatible with the following hardware and clones thereof:

* Sinclair ZX Spectrum (16K/48K) [1]
* Sinclair ZX Spectrum+ (48K/128K) [2]
* Sinclair ZX Spectrum+2 (grey/black) [2]
* Sinclair ZX Spectrum+3 [2], [3]
* Timex Computer TC2048
* Timex Computer TC2068 [4]
* Timex Sinclair TS2068 [4]

Más información en:
http://sourceforge.net/projects/sebasic/forums/forum/1747195/topic/4497120