https://github.com/huggingface/chat-ui - Amazing clean UI with very good web search, my go to currently. (they added the ability to do it all locally very recently!)
https://github.com/oobabooga/text-generation-webui - Best overall, supports any model format and has many extensions
https://github.com/ParisNeo/lollms-webui/ - Has PDF, stable diffusion and web search integration
https://github.com/h2oai/h2ogpt - Has PDF, Web search, best for files ingestion (supports many file formats)
https://github.com/SillyTavern/SillyTavern - Best for custom characters and roleplay
https://github.com/NimbleBoxAI/ChainFury - Has great UI and web search (experimental)
https://github.com/nomic-ai/gpt4all - Basic UI that replicated ChatGPT
https://github.com/imartinez/privateGPT - Basic UI that replicated ChatGPT with PDF integration
https://github.com/LostRuins/koboldcpp - Easy to install and simple interface
https://github.com/lobehub/lobe-chat - Nice rich UI with the ability to load extensions for web search, TTS and more
https://github.com/ollama-webui/ollama-webui - ChatGPT like UI with easy way to download models
https://github.com/turboderp/exui - very fast and vram efficient
https://github.com/PromtEngineer/localGPT - Focuses on PDF files
https://github.com/shinomakoi/AI-Messenger - Supports EXLv2 and LLava
https://github.com/serge-chat/serge
https://www.reddit.com/r/LocalLLaMA/comments/1847qt6/llm_webui_recommendations/