Multica
Universal AI agent framework — 50+ service integrations.
MIT-licensed agent platform with API, database, email, calendar, and cloud storage connectors. Multi-step workflows with memory and error recovery.
Letta
Stateful AI agents with persistent memory — formerly MemGPT, agents learn and self-improve over time
Stateful AI agent framework with persistent memory — formerly MemGPT. Agents learn, self-improve, and retain context across sessions. Open-source alternative to LangChain.
Suna
AI agent that autonomously handles real-world tasks.
Source-available agent platform with browser automation, file management, and web scraping. Deploy autonomous agents for research and operations.
Compare CrewAI alternatives
CrewAI is itself an open-source (MIT-licensed) Python framework for orchestrating multi-agent workflows, with a separate paid CrewAI Enterprise (AMP) product for managed deployment and monitoring. Teams that want to stay entirely within the free, self-hosted tier, or that prefer a different agent orchestration model, look at what else is available.
If you want persistent, stateful agents that retain memory across sessions rather than task-based crews, Letta is built specifically around that model. If your goal is a single autonomous agent that handles end-to-end tasks rather than orchestrating a team of role-based agents, Suna and Multica take that more general-purpose approach.
FAQ
Is there a free, open-source alternative to CrewAI?
Yes. Letta, Suna, and Multica are all open source and free to self-host.
What's the best open-source alternative to CrewAI?
Letta is the better pick if persistent agent memory across sessions is the priority. Multica is the better pick for a broad, integration-heavy general-purpose agent framework.
What are the top open-source alternatives to CrewAI?
Browse all open-source alternatives to CrewAI above, or explore the full Developer Tools category for more options.