Pale Moon is an open-source web browser based on Firefox that focuses on efficiency and customization.
Best New Moon Alternatives ranked by AI · updated Aug 2026
New Moon is an unofficial Pale Moon-derived browser maintained for older Windows versions, including Windows XP. It preserves the classic XUL extension model while adding compatibility fixes for legacy systems.
Top 6 New Moon alternatives
K-Meleon is a fast and customizable lightweight web browser for Windows.
Basilisk is a free and open-source web browser based on the Mozilla platform that aims to continue the legacy of the classic...
Mypal is a Firefox-based web browser designed for legacy Windows systems, especially Windows XP. It provides a modernized browsing experience on hardware...
Pros
- One of the few actively maintained browsers with Windows XP support
- Supports many Firefox extensions and customization options
- Uses less memory than modern Chromium browsers on older hardware
Cons
- Security and web compatibility lag behind current mainstream browsers
- Some modern websites fail because of outdated browser engines
- Windows-only and unsuitable for current operating systems
5
360 Extreme Explorer
Qihoo 360
360 Extreme Explorer is a Chromium-based Windows browser with editions that have supported older operating systems such as Windows XP. It offers...
Pros
- Chromium-based rendering can handle more modern sites than Gecko legacy browsers
- Includes familiar Chromium features such as tab management and developer tools
- Available in builds designed for older Windows systems
Cons
- Older editions lack current Chromium security updates
- Chinese localization and documentation can complicate setup
- Privacy practices are less transparent than open-source alternatives
6
RetroZilla
RetroZilla contributors
RetroZilla is a community-maintained browser based on older Mozilla technology and adapted for obsolete operating systems. It prioritizes running on very old...
Pros
- Designed for extremely old Windows systems and hardware
- Very low resource requirements compared with modern browsers
- Useful for accessing simple legacy websites and local web applications
Cons
- Much weaker modern web compatibility than Mypal
- Lacks current browser security protections
- Limited extension and developer-tool support
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