OpenHands

OpenHands, built by All Hands AI, is an open-source, model-agnostic platform for building and running AI coding agents that can complete entire software engineering tasks - from fixing bugs and upgrading dependencies to large-scale refactors and pull-request reviews. Started in 2024 as the open-source project OpenDevin, it has grown to 65,000+ GitHub stars and 3M+ downloads, spanning a Python SDK, CLI, local GUI, and OpenHands Cloud. The company raised an $18.8M Series A led by Madrona in November 2025 to bring secure, transparent, self-hostable coding agents to enterprises.