head to head · open source
Zen Browser vs Notion-Boost-browser-extension
Zen Browser has 44,486 GitHub stars, 1,755 forks, 689 open issues and last shipped 2 days ago. Notion-Boost-browser-extension has 549 stars, 50 forks, 100 open issues and last shipped 4 months ago. Zen Browser leads on adoption by 8,003% (44,486 vs 549 stars). Zen Browser is written in C++ under MPL-2.0; Notion-Boost-browser-extension is written in TypeScript under GPL-3.0. Zen Browser has attracted 4% as many forks as stars, Notion-Boost-browser-extension 9%. Zen Browser 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
| Zen Browser | Notion-Boost-browser-extension | |
|---|---|---|
| GitHub stars | ★ 44K | ★ 549 |
| License | MPL-2.0 | GPL-3.0 |
| Written in | C++ | TypeScript |
| Last push | 2026-09-17 | 2026-06-03 |
| Forks | ⑂ 1.8K | ⑂ 50 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Zen Browser if
- You weight community size — 44K stars and counting
- You want the MPL-2.0 license terms
- Your stack matches C++
- You value the larger contributor base for long-term maintenance
pick Notion-Boost-browser-extension if
- You want the Notion-Boost-browser-extension 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 Notion-Boost-browser-extension fits your workflow better
About Zen Browser
Zen Browser is a privacy focused, open source web browser built on Firefox’s Gecko engine. It inherits Firefox’s compatibility and extension ecosystem while introducing a streamlined interface and productivity oriented features. The project lives in the desktop browser ecosystem, targeting users who want a Firefox based experience with reduced clutter and enhanced customization.
read the full Zen Browser overview →
About Notion-Boost-browser-extension
Notion Boost is a Chrome and Firefox browser extension that adds more than twenty optional features to Notion.so, aimed at Notion users who want to change how the web app looks and behaves without waiting for Notion itself to add those options.
read the full Notion-Boost-browser-extension overview →
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Frequently asked questions
Is Zen Browser or Notion-Boost-browser-extension more popular?
Zen Browser has 44,486 GitHub stars and Notion-Boost-browser-extension has 549. Zen Browser has the larger community by that measure.
Are Zen Browser and Notion-Boost-browser-extension free?
Both are open source. Zen Browser is licensed under MPL-2.0 and Notion-Boost-browser-extension under GPL-3.0. Neither carries a licence fee.
What is the difference between Zen Browser and Notion-Boost-browser-extension?
Zen Browser is written in C++ and Notion-Boost-browser-extension 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, Zen Browser or Notion-Boost-browser-extension?
Choose Zen Browser if you want the larger community (44,486 stars) or its MPL-2.0 licence terms. Choose Notion-Boost-browser-extension if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.