CatsuBrowser

Lightweight, fast, and compatible

Developed in C# (.NET Framework 4.7.2) with WPF and WebView2, CatsuBrowser offers a minimalist experience with extremely low memory usage, perfect for older or modest PCs.

Download View on GitHub
100% C# (WPF) 32-bit (x86) .NET Framework 4.7.2

Features

Multi-tabs

Open, close, and manage multiple tabs independently.

Navigation controls

Back, Forward, Refresh, and Home buttons for smooth browsing.

Smart address bar

Enter a URL or search term, automatically using Google search.

Per-tab history

View, reopen, or clear history entries per tab.

Modern interface

Dark theme inspired by Fluent Design, clean and responsive.

Performance

~800 MB of RAM
Chrome 64-bit
~30 MB of RAM
CatsuBrowser 32-bit

Measured in Task Manager. A 32-bit minimalist design drastically reduces memory footprint.

Download

Install the latest stable version via GitHub Releases. Choose the installer that fits your system.

Latest release All versions
  • installer: Zip/(EXE is Coming) (Download WebView2 if you encounter any problems).
  • Zip Download: for Windows 7/8/10/11 (Download WebView2 if you encounter any problems).
  • Architecture: 32-bit (x86).

Requirements

  • Windows: Windows 7 or later.
  • .NET: .NET Framework 4.7.2.
  • Runtime: Microsoft Edge WebView2 installed (For Windows 7-11).

Roadmap

  • Bookmarks: Save and organize favorite sites.
  • Settings: Homepage, theme, search engine options.
  • Downloads: Built-in download manager.
  • Updates: Automatic release check and notifications.

FAQ

Does CatsuBrowser work without WebView2?

No. On Windows 7/8/10/11, install WebView2 manually.

Is the project 100% C#?

Yes, the browser is fully developed in C# (WPF).

Can I contribute?

Yes, open issues or pull requests on GitHub.

Contribute

The source code is open for contributions. Report bugs, suggest improvements, or submit pull requests.

GitHub Repository Issues

MIT License.