A minimal, functional, and customizable user-focused FOSS web browser.
Publisher’s description
What is catalyst-browser?
catalyst-browser is an open-source web browser program for Windows from CatalystDevOrg. It is written in JavaScript.
Installation and requirements
Official installers exist for 32-bit as EXE.
Updates and version history
The current version is 3.9.8, released on August 11, 2025. 6 versions are listed since May 1, 2022, each with links to its own installer files. That is about 1.8 releases a year. The last update is more than a year old.
Popularity and file types
The source code on GitHub (CatalystDevOrg/Catalyst) has 81 stars. Similar programs include Brave, Waterfox and qutebrowser.
Project description on GitHub: “A minimal, functional, and customizable user-focused FOSS web browser”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
Cons
- No native ARM64 build
- 32-bit only
- No update for more than a year
- No documented silent install switch
In short: catalyst-browser is an open-source web browser tool for 32-bit PCs. Updates have slowed down.
Is catalyst-browser safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
1FFBF89FB582E68D9C4AB696B9AEB20777FD864D055880EC158DAA99D9182ECC· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 6 versions ›6 versions over 3 years · about 1.8 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 3.9.8Latest | August 11, 2025 | — | 32-bit EXE |
| 3.9.6 | December 25, 2024 | — | 64-bit EXE (NSIS) |
| 3.9.4 | November 15, 2024 | — | 64-bit EXE (NSIS) |
| 3.5.4 | October 7, 2023 | — | 64-bit EXE |
| 3.2.2 | October 9, 2022 | — | 32-bit EXE |
| 3.1.0 | May 1, 2022 | — | 64-bit EXE |
Install from the command line
Silent install ›winget install --id CatalystDevOrg.CatalystBrowser -eRelated guide: How to use winget: install and update apps
Information
- Publisher
- CatalystDevOrg
- Category
- Web browsers
- Licence
- MIT
- Price
- Free
- Source code
- github.com/CatalystDevOrg/Catalyst
- Written in
- JavaScript
- Requires
- Windows 11 / 10
- Architecture
- 32-bit
- Installer
- EXE
- Version
- 3.9.8
- Released
- August 11, 2025
- Added to the catalogue
- November 18, 2024
- Versions listed
- 6
- Updates / year
- 1.8
- GitHub stars
- 81
- GitHub forks
- 24
- Website
- github.com
- winget ID
- CatalystDevOrg.CatalystBrowser
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is catalyst-browser free?
Yes. catalyst-browser is open-source software under the MIT licence.
Is catalyst-browser safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install catalyst-browser with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Does catalyst-browser run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 32-bit version through emulation.
Where can I download an older version of catalyst-browser?
The versions page lists all 6 versions with links to their official installer files, back to May 1, 2022.
What are alternatives to catalyst-browser?
Brave, Waterfox, qutebrowser, Microsoft Edge and Safari. The alternatives page compares them.
