head to head · open source
Langflow vs Rezi
Langflow has 156,266 GitHub stars, 10,311 forks, 1,056 open issues and last shipped yesterday. Rezi has 677 stars, 16 forks, 5 open issues and last shipped 5 months ago. Langflow leads on adoption by 22,982% (156,266 vs 677 stars). Langflow is written in Python under MIT; Rezi is written in TypeScript under Apache-2.0. Langflow has attracted 7% as many forks as stars, Rezi 2%. 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 | Rezi | |
|---|---|---|
| GitHub stars | ★ 156K | ★ 677 |
| License | MIT | Apache-2.0 |
| Written in | Python | TypeScript |
| Last push | 2026-11-02 | 2026-06-17 |
| Forks | ⑂ 10K | ⑂ 16 |
| 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 Rezi if
- You want the Rezi 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 Rezi 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 Rezi
Rezi Rezi is a TypeScript framework for building terminal applications on Node.js and Bun. It provides structured layout, focus and input handling, routing, widgets, and testing tools, with rendering handled by Zireael, a terminal engine written in C. Links: Website · Docs · Quickstart · Widgets · Benchmarks Status Rezi is in beta . The core API — the app model, layout, input routing, theming, and the widget surface — is stable enough to build on, and the public API of @rezi ui/core is recorded and diffed in CI. Breaking changes still happen before 1.0, but they are deliberate, batched, and documented in the…
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Frequently asked questions
Is Langflow or Rezi more popular?
Langflow has 156,266 GitHub stars and Rezi has 677. Langflow has the larger community by that measure.
Are Langflow and Rezi free?
Both are open source. Langflow is licensed under MIT and Rezi under Apache-2.0. Neither carries a licence fee.
What is the difference between Langflow and Rezi?
Langflow is written in Python and Rezi 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 Rezi?
Choose Langflow if you want the larger community (156,266 stars) or its MIT licence terms. Choose Rezi if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.