This is an attempt to list all “official” firmware related to the Gemini computers.
If anyone has anything to add, please let me know!
- RP/M
- An on-board monitor program which simulated CP/M for tape-based programs.
- SI-MON Disk boot EPROM
- An on-board boot ROM (with additional facilities) which was used primarily to boot a CP/M system.
nascom.info 
When someone writes an paragraph he/she maintains the plan of a user in his/her brain that how a user can be aware of it.
Thus that’s why this article is great. Thanks!
You seem to nly list the ‘firmware’, not the actual software of which I would mention the ‘Blue Label Pascal’ by Anders Heilsberg – the creator of later PolyPascal, TurboPascal, Borland Pascal and C#