head to head · open source
openseo vs waterfox
openseo has 19,046 GitHub stars, 2,447 forks, 161 open issues and last shipped yesterday. waterfox has 6,291 stars, 431 forks, 332 open issues and last shipped 3 days ago. openseo leads on adoption by 203% (19,046 vs 6,291 stars). openseo is written in TypeScript under MIT; waterfox is written in JavaScript under a custom or non-standard licence. openseo has attracted 13% as many forks as stars, waterfox 7%. 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 | waterfox | |
|---|---|---|
| GitHub stars | ★ 19K | ★ 6.3K |
| License | MIT | Custom / other |
| Written in | TypeScript | JavaScript |
| Last push | 2026-09-17 | 2026-09-15 |
| Forks | ⑂ 2.4K | ⑂ 431 |
| 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 waterfox if
- You want the waterfox feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches JavaScript
- You evaluated both and waterfox 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 waterfox
Waterfox is an open source web browser built on Mozilla Firefox, with source code maintained in this repository. The project describes itself as a customisable browser based on the Mozilla Firefox codebase, and the tree contains both the upstream Mozilla platform code and the Waterfox specific product layer that sits on top of it. It lives in the JavaScript and Gecko browser ecosystem, sharing the rendering engine, build system and testing tooling that Mozilla maintains for Firefox. The browser is distributed to end users through the project's own website, while the source distribution here targets people who wan…
read the full waterfox overview →
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Frequently asked questions
Is openseo or waterfox more popular?
openseo has 19,046 GitHub stars and waterfox has 6,291. openseo has the larger community by that measure.
Are openseo and waterfox free?
Both are open source. openseo is licensed under MIT, and waterfox has no licence declared in this registry. Both are free to self-host.
What is the difference between openseo and waterfox?
openseo is written in TypeScript and waterfox in JavaScript. 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 waterfox?
Choose openseo if you want the larger community (19,046 stars) or its MIT licence terms. Choose waterfox if its feature set, stack or Custom / other licence fits better. Both are self-hostable.