| Firmware | Devices | Comment |
| [Magic Lantern |http://magiclantern.wikia.com/wiki/Magic_Lantern_Firmware_Wiki] | Canon EOS 5D, 500D, 600D, T3i etc. | An alternative firmware for high end cameras focusing on video capability | 
| [CHDK|http://chdk.wikia.com/wiki/CHDK]| | Canon Powershot A, Ixus, Elph etc. | Allows Lua scripts, motion detection, Raw mode, Synchronizing cameras etc. |