It would be good to share other OSS alternatives here, some alternatives I've seen mentioned in Reddit threads:

   - jan.ai
   - librechat.ai
   - AnythingLLM

GitHub links:

- https://github.com/janhq/jan

- https://github.com/danny-avila/LibreChat

- https://github.com/Mintplex-Labs/anything-llm

Witsy is very good.

* https://github.com/nbonamy/witsy

They don't really do a good job describing the features, but you can use it for any OpenAI compatible local API as well (llama.cpp, koboldcpp, etc).

https://github.com/agent0ai/agent-zero

I'm leaning towards this one myself but I'm still early in researching alternatives.