head to head · open source
Langflow vs Onlook
Langflow has 156,266 GitHub stars, 10,311 forks, 1,056 open issues and last shipped yesterday. Onlook has 27,083 stars, 2,139 forks, 380 open issues and last shipped 13 days ago. Langflow leads on adoption by 477% (156,266 vs 27,083 stars). Langflow is written in Python under MIT; Onlook is written in TypeScript under Apache-2.0. Langflow has attracted 7% as many forks as stars, Onlook 8%. Langflow was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Langflow | Onlook | |
|---|---|---|
| GitHub stars | ★ 156K | ★ 27K |
| License | MIT | Apache-2.0 |
| Written in | Python | TypeScript |
| Last push | 2026-11-02 | 2026-10-21 |
| Forks | ⑂ 10K | ⑂ 2.1K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Langflow if
- You weight community size — 156K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Onlook if
- You want the Onlook feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and Onlook fits your workflow better
About Langflow
Langflow is a powerful platform for building and deploying AI powered agents and workflows. It provides developers with both a visual authoring experience and built in API and MCP servers that turn every workflow into a tool that can be integrated into applications built on any framework or stack. Langflow comes with batteries included and supports all major LLMs, vector databases and a growing library of AI tools. ✨ Highlight features Visual builder interface to quickly get started and iterate. Source code access lets you customize any component using Python. Interactive playground to immediately test and…
read the full Langflow overview →
About Onlook
Onlook The design tool for AI native designers — now in early access. Onlook makes designing on top of your codebase effortless. Craft exceptional experiences with AI in code. → Join the waitlist 👨💻👩💻👨💻 We're hiring engineers in SF! 👩💻👨💻👩💻 View Demo · Report Bug · Request Feature [![Discord][discord shield]][discord url] [![LinkedIn][linkedin shield]][linkedin url] [![Twitter][twitter shield]][twitter url] 中文 Español Deutsch français Português Русский 日本語 한국어 This is the open source visual editor that started Onlook (Next.js + Tailwind). The hosted product we're building next, for AI native…
read the full Onlook overview →
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Frequently asked questions
Is Langflow or Onlook more popular?
Langflow has 156,266 GitHub stars and Onlook has 27,083. Langflow has the larger community by that measure.
Are Langflow and Onlook free?
Both are open source. Langflow is licensed under MIT and Onlook under Apache-2.0. Neither carries a licence fee.
What is the difference between Langflow and Onlook?
Langflow is written in Python and Onlook in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Langflow or Onlook?
Choose Langflow if you want the larger community (156,266 stars) or its MIT licence terms. Choose Onlook if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.