Kdnuggets lists seven Open-Source ChatGPT alternatives that run locally

The featured options include Open WebUI, a Docker‑friendly interface that supports multiple models and tools; llama.cpp WebUI, a browser front‑end that ships with the llama.cpp server; LobeHub, which adds task‑specific assistants and a polished UI; AnythingLLM, focused on document ingestion and RAG; Jan, a desktop app that hides infrastructure details; LibreChat, a feature‑rich platform with agents, code execution, and multi‑model support; and Hugging Face Chat UI, a lightweight frontend for local inference servers.

The article notes that local deployments offer privacy, control, and lower cost for users with capable GPUs, and that the interfaces can match or exceed the polish of the official chatgpt front‑end.