Learn how Waterfox and Zen Browser differ in their key features, development activity, technology stack and community adoption, so you can decide which of these tools is best for you.

Both Waterfox and Zen Browser have their unique strengths and serve similar purposes effectively. Consider your specific needs regarding popularity, activity, maturity, licensing and features when making your decision.
Zen Browser significantly outpaces Waterfox in community adoption with 43,774 stars compared to 6,101 stars on GitHub. This 7.2x difference suggests Zen Browser has a much larger and more active community. In terms of developer contributions, Zen Browser has 1,673 forks, indicating strong developer engagement.
Both projects show recent activity, with Waterfox last updated 14 hours ago and Zen Browser 7 hours ago.
Waterfox has been in development longer, starting 12 years ago, compared to Zen Browser which began 2 years ago. This 9.6-year head start suggests Waterfox may have more mature features and established processes.
Zen Browser is licensed under MPL-2.0, while Waterfox's license terms are not publicly specified.
Zen Browser extends into Security & Privacy, Web Browsers.

vs
Activity score
Stars
Forks
Last commit
Activity score
Stars
Forks
Last commit
Repository age
Version
Repository
License
Repository