LibreChat

LibreChat began in 2023 as an enhanced ChatGPT clone and has grown into an open-source AI platform that teams host themselves. One interface reaches Anthropic, OpenAI, Azure OpenAI, AWS Bedrock, Google and Vertex AI, plus any OpenAI-compatible endpoint, including local servers such as Ollama. Agents can use MCP servers, file search, skills and a sandboxed code interpreter that runs Python, Node.js, Go, C/C++, Java, PHP, Rust and Fortran. Artifacts render React, HTML and Mermaid diagrams inside the chat, and messages, files and code snippets are searchable. For multi-user deployments it supports OAuth, SAML, LDAP and two-factor authentication. The code is released under the MIT license.