I've added support for a couple of Archos devices to TWRP.
At the moment they are:
- Archos 50 Diamond (running Lollipop)
- Archos 55 Diamond Selfie
- Archos 80c Xenon
Here is the support thread of those TWRP.
You might ask me to support other Archos devices (I have access to many of those), but I won't promise anything.