The 15 best open-source Agent frameworks libraries in 2026, ranked by our maintenance-health metric plus real adoption (stars and weekly downloads) and security signals. Right now hermes-agent leads the field with a 100/100 health score. Each links to a full analysis with install commands, license, and alternatives.
hermes-agent is an open-source Python project in the agent frameworks space with 185.8k GitHub stars. The repository is actively maintained, with recent commits.
claw-code is an open-source Rust project in the agent frameworks space with 193.4k GitHub stars. The repository is actively maintained, with recent commits.
AutoGPT is a platform for building, deploying, and running continuous AI agents that automate multi-step workflows. It pairs a low-code visual agent builder (connecting "blocks" into workflows) with a server runtime, marketplace of pre-built agents, and the original standalone AutoGPT Agent plus the Forge toolkit and agbenchmark.
GSD (Get Shit Done) is a spec-driven development framework for AI coding agents that combines meta-prompting and context engineering with a set of slash commands, configurable workflows, and role-based agents to take a project from idea through implementation to a shipped PR.
memos is an open-source Go project with 60.7k GitHub stars. It is associated with docker, foss, go, markdown. The repository is actively maintained, with recent commits.
okhttp is an open-source Kotlin project with 47k GitHub stars. It is associated with android, graalvm, java, kotlin. The repository is actively maintained, with recent commits.
curl is an open-source C project with 42.1k GitHub stars. It is associated with c, client, curl, ftp. The repository is actively maintained, with recent commits.
tidb is an open-source Go project with 40.2k GitHub stars. It is associated with agent, agent-context, agent-memory, agentic. The repository is actively maintained, with recent commits.
Minds Platform (Minds-Cowork) is an open-source, general-purpose AI agent application aimed at knowledge workers, packaged as a web/desktop (Electron) app that automates multi-step read-and-write tasks and lets users build internal AI tools without engineering. It emphasizes self-hosted control with deployment across cloud, VPC, on-prem, and air-gapped environments.
Composio is an integration platform that gives AI agents and LLMs authenticated access to hundreds of external tools and apps (Gmail, Slack, GitHub, etc.) through a managed SDK, handling OAuth, auth config, and tool execution so agents can take real-world actions.
Onlook is an open-source visual editor for React apps that pairs an AI agent with a design-tool-style canvas, letting you edit a live Next.js/TailwindCSS app visually and in code while the changes write back to the actual source. It positions itself as a "Cursor for designers," bridging the gap between design and front-end development.
OpenViking is an open-source Python project in the agent frameworks space with 25.5k GitHub stars. The repository is actively maintained, with recent commits.
iii is an open-source Rust project with 18k GitHub stars. It is associated with agents, ai, api, backend. The repository is actively maintained, with recent commits.
ky is an open-source TypeScript project with 16.9k GitHub stars. It is associated with fetch, http-client, http-request, javascript. The repository is actively maintained, with recent commits.
dagger is an open-source Go project with 15.9k GitHub stars. It is associated with agents, caching, ci-cd, containers. The repository is actively maintained, with recent commits.