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Top 23 Agent Open-Source Projects
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AutoGPT
AutoGPT is the vision of accessible AI for everyone, to use and to build on. Our mission is to provide the tools, so that you can focus on what matters.
AutoGPT (agpt.co): Open-source autonomous agent framework, released in 2023. Pioneering example of general-purpose agent architecture; known for demonstrating both promise and limitations of autonomous systems.
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SaaSHub
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Project mention: CVE-2026-33017: How I Found an Unauthenticated RCE in Langflow by Reading the Code They Already Fixed | dev.to | 2026-03-19
I reported this through Langflow's GitHub Security Advisory on February 25, 2026. The initial response took about two weeks and a couple of follow-up pings from my end. Once the team engaged, things moved quickly. They merged a fix in PR #12160, and the advisory was published on March 16, 2026.
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Prompt-Engineering-Guide
🐙 Guides, papers, lessons, notebooks and resources for prompt engineering, context engineering, RAG, and AI Agents.
Prompt Engineering Guide
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Project mention: SOC-in-a-Box: One LLM, Eight Hats, A Production-Bar AI SOC on a Single GPU | dev.to | 2026-06-06
AutoGen is conversation-shaped: agent-to-agent chat with an explicit GroupChat manager. Great for "two LLMs argue and converge on an answer" — code-writer vs code-reviewer, advocate vs critic.
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Project mention: I Tested Flowise, Dify, and n8n Across 30+ Client Deployments. Here Is My Verdict. | dev.to | 2026-04-07
Citation Capsule: n8n's GitHub community reached 182,000+ stars across a 7-year development history, with 70+ AI-specific nodes added in 2024 to 2025. Source: n8n GitHub. Dify crossed 106,000 stars on GitHub with an Apache 2.0 license. Source: Dify GitHub. Flowise reached 51,000+ stars with MIT license. Source: Flowise GitHub. Dify's minimum recommended RAM is 4 GB versus Flowise's 1 GB and n8n's 300 MB. Source: Dify Docs.
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crewAI
Framework for orchestrating role-playing, autonomous AI agents. By fostering collaborative intelligence, CrewAI empowers agents to work together seamlessly, tackling complex tasks.
Project mention: SOC-in-a-Box: One LLM, Eight Hats, A Production-Bar AI SOC on a Single GPU | dev.to | 2026-06-06CrewAI is excellent at what it's designed for: a "crew" of role-shaped agents collaborating on one task. Declarative Agent + Task + Process (sequential or hierarchical), with strong primitives for delegation between agents inside the same crew.
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Open-source alternative: The DIY pattern is a LlamaIndex RAG pipeline over your CRM + filings + news. Real, but takes a quarter to ship and 18 months to make trust-grade.
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LocalAI
LocalAI is the open-source AI engine. Run any model - LLMs, vision, voice, image, video - on any hardware. No GPU required.
LocalAI: https://github.com/mudler/LocalAI
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Project mention: AI Agents: Mastering 3 Essential Patterns (Tool Using). Part 1 of 3 | dev.to | 2026-01-03
In this series of articles, we will explore three fundamental patterns in AI Agent development. We will use Python and the Agno framework, available on Github.
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MindsDB
Platform dedicated to building an open foundation for applied Artificial Intelligence, designed for people seeking production-ready AI systems they can truly control, extend and deploy anywhere.
Project mention: MindsDB Supercharges Google's MCP Toolbox with Unstructured Data Support | dev.to | 2025-12-29We’re happy to announce that we’ve integrated MindsDB with Google's open-source project, MCP (Model Context Protocol) Toolbox. This will make your AI applications very, very smart. This enhancement expands the Toolbox's reach, especially for organizations grappling with lots of siloed data.
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agents
Multi-harness agentic plugin marketplace for Claude Code, Codex CLI, Cursor, OpenCode, and Gemini CLI
Project mention: Repository Transformation: From Chaos to Professional Prompt Engineering Toolkit | dev.to | 2026-03-25Prominently featured 74 professional AI agent configurations adapted from wshobson/agents:
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LangGraph AGENTS.md
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Birdclaw is interesting because it gives agents access to a Twitter archive. [17] GBrain points at a personal recall layer around OpenClaw / Hermes-style workflows. [18] PageIndex is a useful reminder that simple retrieval, even BM25-only retrieval, still has a place. [19] The “RAG comeback in about 8 months” take lands because the archive problem is still unsolved in practice. [20]
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CopilotKit
The Frontend Stack for Agents & Generative UI. React + Angular. Makers of the AG-UI Protocol
The instructions prop is ignored with custom agents. We set system instructions via CopilotSidebar's instructions field and they were silently dropped. This is a known open CopilotKit issue. The workaround: define instructions in the agent's system message directly.
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sim
Build, deploy, and orchestrate AI agents. Sim is the central intelligence layer for your AI workforce.
Sim ai is an alternative to Heym
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composio
Composio powers 1000+ toolkits, tool search, context management, authentication, and a sandboxed workbench to help you build AI agents that turn intent into action.
Project mention: pass@1 is a gamble — how ensemble coding enhances AI reliability | dev.to | 2026-04-02The ensemble idea is in the air. Mozilla AI's Star Chamber fans out code reviews to Claude, GPT, and Gemini in parallel, using consensus tiers and optional debate rounds where anonymized feedback circulates back to all models. Karpathy's llm-council runs a deliberation pipeline — parallel query, peer review, chairman synthesis — for general-purpose tasks. Roundtable orchestrates multiple AI CLI tools through a unified MCP interface. Composio's Agent Orchestrator manages parallel coding agents with git worktrees for task decomposition — different agents working on different sub-tasks. And Aider's Architect Mode pairs two models in complementary roles (planner + editor).
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LanceDB and Chroma: Lightweight local layers for fast recall and offline persistence
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Project mention: Securing OpenAI Agents SDK Against Memory Poisoning (ASI06) Using Pydantic Field Validators | dev.to | 2026-05-19
This post shows the idiomatic way to defend against it in the OpenAI Agents SDK, using the SDK's own Pydantic context architecture. The integration pattern was validated in a public thread with an OpenAI SDK maintainer.
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Graphiti by Zep is the temporal knowledge graph. Its core insight: knowing the current state isn't enough. You need to know when things changed and what was true before.
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agenticSeek
Fully Local Manus AI. No APIs, No $200 monthly bills. Enjoy an autonomous agent that thinks, browses the web, and code for the sole cost of electricity. 🔔 Official updates only via twitter @Martin993886460 (Beware of fake account)
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CL4R1T4S
LEAKED SYSTEM PROMPTS FOR CHATGPT, CLAUDE, GEMINI, GROK, PERPLEXITY, CURSOR, LOVABLE, REPLIT, AND MORE! - AI SYSTEMS TRANSPARENCY FOR ALL! 👐
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MLflow
The open source AI engineering platform for agents, LLMs, and ML models. MLflow enables teams of all sizes to debug, evaluate, monitor, and optimize production-quality AI applications while controlling costs and managing access to models and data.
For example, this can be done using MLflow in Python:
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Agents discussion
Agents related posts
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Async hierarchical memory middleware for LLM agents
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SOC-in-a-Box: One LLM, Eight Hats, A Production-Bar AI SOC on a Single GPU
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I Stopped Repeating Context to My AI
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What Happens When You Treat Every Sales Event as a Memory Write
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How I Stopped Repeating Architectural Mistakes because of a Greek Goddess
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Microsandbox – local-first programmable micro VMs
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Why I Stopped Using Chat History and Used Hindsight Memory
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A note from our sponsor - SaaSHub
www.saashub.com | 7 Jun 2026
Index
What are some of the best open-source Agent projects? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | AutoGPT | 184,738 |
| 2 | langflow | 149,263 |
| 3 | Prompt-Engineering-Guide | 75,276 |
| 4 | autogen | 58,700 |
| 5 | Flowise | 53,317 |
| 6 | crewAI | 52,870 |
| 7 | llama_index | 49,924 |
| 8 | LocalAI | 46,698 |
| 9 | agno | 40,537 |
| 10 | MindsDB | 39,243 |
| 11 | agents | 36,406 |
| 12 | langgraph | 33,889 |
| 13 | PageIndex | 32,583 |
| 14 | CopilotKit | 32,542 |
| 15 | sim | 28,708 |
| 16 | composio | 28,600 |
| 17 | chroma | 28,214 |
| 18 | openai-agents-python | 26,925 |
| 19 | graphiti | 27,042 |
| 20 | agenticSeek | 26,450 |
| 21 | CL4R1T4S | 26,394 |
| 22 | MLflow | 26,292 |
| 23 | fastmcp | 25,469 |
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