Refact.ai

Refact.ai is an open-source AI agent that handles engineering tasks end-to-end. It holds the #1 position on SWE-bench verified for self-hosted solutions. Can be deployed on-premise for enterprises with strict data requirements. Features fine-tuning on your own codebase, support for 25+ languages, BYOK (bring your own key) support, and VS Code/JetBrains plugins. Free community edition available for self-hosting.