head to head · open source
openseo vs proton-lumo
openseo has 19,046 GitHub stars, 2,447 forks, 161 open issues and last shipped yesterday. proton-lumo has 5,590 stars, 711 forks, 155 open issues and last shipped yesterday. openseo leads on adoption by 241% (19,046 vs 5,590 stars). openseo is written in TypeScript under MIT; proton-lumo is written in TypeScript under GPL-3.0. openseo has attracted 13% as many forks as stars, proton-lumo 13%. openseo 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
| openseo | proton-lumo | |
|---|---|---|
| GitHub stars | ★ 19K | ★ 5.6K |
| License | MIT | GPL-3.0 |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 2.4K | ⑂ 711 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick openseo if
- You weight community size — 19K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick proton-lumo if
- You want the proton-lumo feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and proton-lumo fits your workflow better
About openseo
OpenSEO is an open source SEO tool written in TypeScript under the MIT license. It is an alternative to paid SEO platforms such as Semrush and Ahrefs, and it lives in the open source SEO tooling ecosystem. The project provides a hosted option, self hosting paths, and an MCP server for agent use.
read the full openseo overview →
About proton-lumo
Proton WebClients is a monorepo hosting the Proton web clients. It lives in the Proton ecosystem and holds the web applications, their dependencies, shared modules, and all tooling surrounding web client development. Applications inside include Proton Mail, Proton Calendar, Proton Drive, Proton Account, Proton VPN, Proton Pass, Proton Wallet, Proton Lumo, and Proton Meet. Code and data files ship under GNU General Public License version 3.
read the full proton-lumo overview →
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Frequently asked questions
Is openseo or proton-lumo more popular?
openseo has 19,046 GitHub stars and proton-lumo has 5,590. openseo has the larger community by that measure.
Are openseo and proton-lumo free?
Both are open source. openseo is licensed under MIT and proton-lumo under GPL-3.0. Neither carries a licence fee.
What is the difference between openseo and proton-lumo?
openseo is written in TypeScript and proton-lumo 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, openseo or proton-lumo?
Choose openseo if you want the larger community (19,046 stars) or its MIT licence terms. Choose proton-lumo if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.