# Verified sources — open-source agent packages

Checked against each project's official GitHub repository on 24 Oct 2026. The marketplace re-checks these monthly.

| Package | Maintainer | Licence | Repository | Docs |
|---|---|---|---|---|
| Hermes Agent | Nous Research | MIT | https://github.com/NousResearch/hermes-agent | https://hermes-agent.nousresearch.com/docs |
| LangGraph | LangChain | MIT | https://github.com/langchain-ai/langgraph | https://docs.langchain.com/oss/python/langgraph/ |
| CrewAI | CrewAI Inc. | MIT | https://github.com/crewAIInc/crewAI | https://docs.crewai.com |
| AutoGen | Microsoft | MIT code / CC-BY-4.0 docs | https://github.com/microsoft/autogen | https://microsoft.github.io/autogen/ |
| Dify | LangGenius | Dify Open Source License | https://github.com/langgenius/dify | https://docs.dify.ai |
| smolagents | Hugging Face | Apache-2.0 | https://github.com/huggingface/smolagents | https://huggingface.co/docs/smolagents |
| n8n | n8n GmbH | Sustainable Use License | https://github.com/n8n-io/n8n | https://docs.n8n.io |
| OpenHands | OpenHands | MIT | https://github.com/OpenHands/OpenHands | https://docs.openhands.dev |
| Letta | Letta | Apache-2.0 | https://github.com/letta-ai/letta | https://docs.letta.com/ |

Note: some infographics credit Hermes Agent to "Nuance Research"; the official maintainer is **Nous Research**.