head to head · open source
Langflow vs OpnForm
Langflow has 156,266 GitHub stars, 10,311 forks, 1,056 open issues and last shipped yesterday. OpnForm has 3,970 stars, 573 forks, 22 open issues and last shipped yesterday. Langflow leads on adoption by 3,836% (156,266 vs 3,970 stars). Langflow is written in Python under MIT; OpnForm is written in PHP under a custom or non-standard licence. Langflow has attracted 7% as many forks as stars, OpnForm 14%. 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.
← all 20902 open source comparisons
Side by side
| Langflow | OpnForm | |
|---|---|---|
| GitHub stars | ★ 156K | ★ 4.0K |
| License | MIT | Custom / other |
| Written in | Python | PHP |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 10K | ⑂ 573 |
| 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 OpnForm if
- You want the OpnForm feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches PHP
- You evaluated both and OpnForm 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 OpnForm
OpnForm OpnForm is an open source form builder. Get Started The easiest way to get started with OpnForm is to sign up for our managed service in the Cloud. You get support, backups, upgrades, and more. Your data is safe and secure, and you don't need to worry about maintenance or infrastructure. Check out our quick overview of cloud vs self hosting. Key Features 🚀 No code builder with unlimited forms & submissions 📝 Various input types: Text, Date, URL, File uploads & much more 🌐 Embed anywhere 📧 Email notifications 💬 Integrations (Slack, Webhooks, Discord) 🧠 Form logic & customization 🛡️ Captcha…
read the full OpnForm overview →
More in Developer Tools
Related comparisons
More Frameworks & Platforms projects
Compare either of these against the rest of the Frameworks & Platforms field.
Frequently asked questions
Is Langflow or OpnForm more popular?
Langflow has 156,266 GitHub stars and OpnForm has 3,970. Langflow has the larger community by that measure.
Are Langflow and OpnForm free?
Both are open source. Langflow is licensed under MIT, and OpnForm has no licence declared in this registry. Both are free to self-host.
What is the difference between Langflow and OpnForm?
Langflow is written in Python and OpnForm in PHP. 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 OpnForm?
Choose Langflow if you want the larger community (156,266 stars) or its MIT licence terms. Choose OpnForm if its feature set, stack or Custom / other licence fits better. Both are self-hostable.