head to head · open source
Zen Browser vs otplib
Zen Browser has 44,812 GitHub stars, 1,807 forks, 689 open issues and last shipped yesterday. otplib has 2,292 stars, 146 forks, 7 open issues and last shipped 4 days ago. Zen Browser leads on adoption by 1,855% (44,812 vs 2,292 stars). Zen Browser is written in C++ under MPL-2.0; otplib is written in TypeScript under MIT. Zen Browser has attracted 4% as many forks as stars, otplib 6%. 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 | otplib | |
|---|---|---|
| GitHub stars | ★ 45K | ★ 2.3K |
| License | MPL-2.0 | MIT |
| Written in | C++ | TypeScript |
| Last push | 2026-10-07 | 2026-10-04 |
| Forks | ⑂ 1.8K | ⑂ 146 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Zen Browser if
- You weight community size — 45K 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 otplib if
- You want the otplib feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and otplib 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 otplib
otplib is a TypeScript first one time password library for Node.js, Bun, Deno, and browser applications that need to add HOTP and TOTP two factor authentication compatible with Google Authenticator.
read the full otplib overview →
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Frequently asked questions
Is Zen Browser or otplib more popular?
Zen Browser has 44,812 GitHub stars and otplib has 2,292. Zen Browser has the larger community by that measure.
Are Zen Browser and otplib free?
Both are open source. Zen Browser is licensed under MPL-2.0 and otplib under MIT. Neither carries a licence fee.
What is the difference between Zen Browser and otplib?
Zen Browser is written in C++ and otplib 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 otplib?
Choose Zen Browser if you want the larger community (44,812 stars) or its MPL-2.0 licence terms. Choose otplib if its feature set, stack or MIT licence fits better. Both are self-hostable.