Langflow
Visual builder for LLM applications with web UI for no-code workflows.
Agent, MCP and tool libraries PyPI MIT
How Langflow is used
Langflow is a dependency in 2 of the 6,208 public GitHub projects set up for AI coding agents that we scanned, too few to describe it from them alone. Our scan also samples projects by dependency (Solana 2,661, Ethereum and EVM 1,496, 3D and games 2,818, agent frameworks and SDKs 10,983); counting those, it appears in 191 projects, and what it is used with below comes from all of them. The most used alternative in our scan is LangChain (126 projects). Projects that use it most often also use python-dotenv (55.5%), LangChain (53.4%), Requests (46.6%).
Langflow popularity over time
Gid Score 52: downloads 21, use in agent projects 60, GitHub stars 96, downloads trend 41 (each 0-100). How it is calculated.
Often used with Langflow
| python-dotenv | 55.5% of Langflow projects · 6.1× more than average |
|---|---|
| LangChain | 53.4% of Langflow projects · 26.3× more than average |
| Requests | 46.6% of Langflow projects · 6.9× more than average |
| OpenAI Python Library | 46.1% of Langflow projects · 11.7× more than average |
| pandas | 45.0% of Langflow projects · 10.5× more than average |
| FastAPI | 39.3% of Langflow projects · 5.2× more than average |
| NumPy | 37.7% of Langflow projects · 6.5× more than average |
| Pydantic | 35.1% of Langflow projects · 4.1× more than average |
From all 191 projects in our scan that use Langflow, including the dependency samples.
Install
| Package | pip install langflow |
|---|---|
| Main stacks | Python (189), React Native / Expo (1), Next.js (1) |
| Example projects | aihes/LangChain-Tutorials-and-Examples, NanGePlus/LangFlowTest, ParthGandhi588/RAG_System, TheCompAce/Virtual-Office-AI, ogabrielluiz/langflow-railway |
Alternatives to Langflow
Tools that do the same job, so a project picks one or the other. Add-ons and libraries used alongside Langflow are not listed here; they are in "Often used with".
| Tool | Gid Score | Used in agent projects | Downloads / wk | GitHub stars | License |
|---|---|---|---|---|---|
| LangChain pypi Framework for composing applications with LLMs through chains and agents. |
88 | 126 (7.8%) | 37.3M | 148K | MIT |
| LangGraph pypi Framework for building stateful, multi-actor applications with LLMs. |
78 | 76 (4.7%) | 12.5M | 43.6K | MIT |
| Pydantic AI pypi AI agent framework built with Pydantic for structured, typed agent development. |
62 | 16 (1.0%) | 1.5M | 20.7K | MIT |
| LangGraph SDK pypi SDK for interacting with LangGraph API to build and run agent workflows. |
73 | 9 (0.6%) | 12.2M | 43.6K | MIT |
| smolagents pypi Barebones library for building agents that write Python code to call tools. |
46 | 5 (0.3%) | 113K | — | — |
| CrewAI pypi Framework for orchestrating collaborative AI agents to solve complex autonomous tasks. |
62 | 3 (0.2%) | 669K | 59.9K | MIT |
| Semantic Kernel pypi Microsoft SDK for integrating LLMs with traditional code for AI applications. |
51 | 3 (0.2%) | 73.1K | 28.7K | MIT |
More in Agent, MCP and tool libraries: Model Context Protocol SDK (JavaScript) Model Context Protocol SDK (Python) FastMCP (Python) LangChain.js Mastra Agent Client Protocol SDK MCP Inspector fastMCP (JavaScript)