Top OPENAI-COMPATIBLE-API GitHub Repositories & Tools (2026)

Self-hosted Personal AI + agent runtime in .NET (NativeAOT-friendly)

ThunderAI is a Thunderbird Addon that uses the capabilities of ChatGPT, Gemini, Claude or Ollama to enhance email management.

OpenAI-compatible proxy for Microsoft 365 Copilot — use the Copilot licence you already have as a backend for pi, openclaw and other coding agents. Prompt-emulated tool calling, no extra licence, no MCP.