Open-source AI agent frameworks & apps: top picks for 2026

A self-hosted personal AI assistant that runs on your own devices and answers you through chat apps like WhatsApp, Telegram, Slack, and Discord.

An MCP server that lets AI agents reverse engineer native binaries, JavaScript/Electron apps, .NET assemblies, websites and more, with evidence for each finding.

A software development methodology and composable skills library that guides coding agents through brainstorming, planning, TDD, and subagent-driven implementation.

A collection of reusable agent skills for AI coding assistants like Claude Code and Codex, focused on alignment, design, TDD and disciplined engineering workflows.

An open-source agent harness from DeepSeek AI built on an everything-is-a-plugin architecture, run via a Web UI.

Fair-code workflow automation platform for building AI agents and workflows, with a visual canvas, custom code, and 1500+ integrations.

AutoGPT is an open-source platform for building, running, and scheduling AI agents that complete multi-step workflows from plain-English descriptions or a visual builder.

A public collection of Agent Skills: instruction folders with scripts and resources that Claude loads to handle specialized tasks.

A large collection of role-based AI agent prompt files (engineering, design, marketing, security and more) that install into tools like Claude Code, Cursor and Gemini CLI.

Open-source Python library for AI browser agents that let an LLM operate a real browser, with an optional hosted cloud browser and agent API.

Open-source multi-agent LLM framework that simulates a trading firm's analysts, researchers, trader and risk team to reach trading decisions.

A set of 25 production-grade engineering workflow skills that guide AI coding agents through spec, planning, build, test, review, and ship phases.

A CLI and skill set that gives AI agents read and search access to Twitter, Reddit, YouTube, GitHub, Bilibili, XiaoHongShu and other sites, with automatic backend selection.

Agent Skills that make coding agents design distinctive frontends with art direction, real photos and in-browser visual checks instead of generic AI landing pages.

Turns a codebase or LLM wiki into an interactive knowledge graph you can browse, search, and query from AI coding tools.

Open-source Python web crawler that turns any website into clean, LLM-ready Markdown for RAG, AI agents and data pipelines.

An agent skill that turns ideas, plans, or codebases into interactive HTML diagrams, working with Claude Code, Codex, Cursor, and OpenCode.

An agent harness for Claude Code and Codex that adds multi-agent swarms, shared memory, task routing and cross-machine federation.

Open-source agentic video production system that turns an AI coding assistant into a pipeline-driven video studio for research, scripting, asset generation, and rendering.

An all-in-one AI app for chatting with your documents and running AI agents, with local-first LLM support, multi-user access and no-code agent building.

An open-source framework that turns HTML, CSS, media and seekable animations into deterministic MP4 videos, built for AI coding agents.

An AI agent skill that searches Reddit, X, YouTube, Hacker News, Polymarket and the web for a topic from the last 30 days, then writes a grounded, source-cited brief.

A collection of markdown AI agent skills that give Claude Code, Codex, Cursor and other agents marketing expertise in CRO, copywriting, SEO, analytics and growth.

An open-source Chinese book on AI Agent design, built around Agent = LLM + context + tools, with runnable companion experiments per chapter.

A Claude Code-based framework that runs a personal job search on your machine: evaluate postings, tailor CVs, write cover letters, and prep interviews.

A collection of agent skills that encode animation, design, and UI engineering expertise to help AI coding agents make better interface decisions.

Self-hosted, privacy-first personal knowledge workspace with block-level references, Markdown WYSIWYG editing, and AI agent collaboration.

A Python framework and runtime for building agent platforms, serving agents as an API, and managing them through a web UI.

An AI agent skill pack that routes reverse engineering, pentest, and CTF tasks to the right methodology and toolchain.

A marketplace of plugins, agents, skills and commands for Claude Code, Codex CLI, Cursor, OpenCode, Copilot and other AI coding tools.

Open-source AI platform that turns any topic or document into an interactive classroom with AI teachers and classmates.

Multi-agent orchestration layer for Claude Code that coordinates specialized agents, team pipelines, and parallel execution from a terminal CLI or in-session skills.

A local model gateway that lets Claude Code, Codex, OpenCode and other coding agents share one endpoint and route requests across multiple model providers.

Open-source web-based control panel for managing Linux servers, websites, Docker containers, databases and AI agents.

A self-hostable workspace where humans and AI agents share channels, built on a Nostr relay you run yourself.

GitHub's official MCP server that lets AI assistants read repositories, manage issues and pull requests, and work with GitHub Actions.

Native C++20 desktop terminal for financial research, with Qt6 UI, embedded Python analytics, AI agents and 100+ market data connectors.

A coding-agent skill that guides an AI agent through a multi-phase security audit with independently verified, machine-readable findings.

An open-source autonomous agent that runs deep research on web and local documents using any LLM provider, producing cited reports.

A collection of file-based plugins that specialize Claude for knowledge-work roles like sales, legal, finance, and product management, built for Claude Cowork.

Open-source low-code platform for building internal apps, automations and AI agents that run business operations, with self-hosting and a public API.

A collection of 69 product management skills and 42 chained workflows for Claude Code and Cowork, covering discovery through growth.

A Claude Code template that sets up 49 specialized AI agents, 74 slash-command skills and coordination hooks to run a game project like a studio.

Open-source, self-hostable AI workflow automation platform and no-code alternative to Zapier, with pieces exposed as MCP servers for LLMs.

A mobile, web and CLI front end for running Claude Code and Codex sessions from your phone, with end-to-end encrypted sync between devices.

A toolkit that lets AI coding agents clone a viral video into an editable, re-runnable video workflow with swappable footage, captions, and B-roll.

A trading platform where AI agents register, publish trading signals, discuss strategies, and copy each other's trades.

An open-source coding and research agent built around a persistent Python REPL, recursive subagents, and self-refining harness state for long-running tasks.

An agent plugin and skill set that lets AI coding agents generate, edit, check and fabricate 3D CAD models from text or images.

Desktop, mobile, web and CLI app for running and orchestrating multiple coding agents such as Claude Code, Codex and OpenCode in parallel worktrees.

Open-source toolkit from Unity that lets games and simulations serve as environments for training AI agents with reinforcement and imitation learning.

A curated, install-checked list of community plugins for DeepSeek Harness (dsh), organized by category.

A collection of starter projects showing how to build deployable applications on the Claude API, from support agents to browser and computer-use agents.

An open-source AI coworker for your desktop that completes finished tasks like security reviews, documents, and inbox triage, with approval gates and a sandbox.

Rebuilds the object in a reference image as a code-only, procedural Three.js model that runs in the browser, with animation-ready hierarchy.

Open-source web data platform that turns any website into a structured API via scraping, crawling, search, monitoring and AI extraction.

A browser for AI agents where agents run automation in isolated Spaces while you keep browsing your own tabs and logins.

An open source MCP server that connects AI agents and IDEs to databases, with prebuilt database tools and a framework for custom tools.

A safe, private runtime that sandboxes autonomous AI agents, enforcing declared policies on files, system calls, and network access.

Official AI agent skills that teach coding assistants how to use the GSAP animation library correctly.