SeaMonkey vs Sleipnir : Which is Better?

SeaMonkey

SeaMonkey is a free and open-source Internet suite. Developed by The SeaMonkey Council

License: Open Source

Categories: Development Office & Productivity Social & Communications Web Browsers

Apps available for Mac OS X Windows Linux BSD PortableApps.com

Sleipnir 3 is the Web browser created for users to make use of both their Windows / Mac desktop and smartphone device. Developed by Fenrir Inc.

License: Free

Categories: Social & Communications Web Browsers

Apps available for Mac OS X Windows Android iPhone Windows Phone

Feature	SeaMonkey	Sleipnir
WYSIWYG Support
Add-ons
Built-in Download Manager
Built-in RSS reader
Customizable
Extensible by Plugins/Extensions
Firefox Extensions
Support for Firefox extensions
Integrated Email Client
Lightweight
Modular System
Plugins
Portable
Privacy focused
Security & Privacy
Built-in Ad-blocker
Support for TOR
Cloud sync
Android Sync
Built-in Adobe Flash Player
Support for IMAP
Encryption
Tab Stacking
UI customization
Group tabs
Built-in VPN
Bookmarks
Extensions
Based on Blink engine
Chrome-like
Web Browsers Based on Chromium
Customizability
Developer Tools
Web Browsers Based on Firefox
Web Development
Auto Updates
Block trackers
Bookmark organization
Dropbox integration
Facebook integration
Tabbed browsing
Tabbed interface
Twitter integration
Support for 64 bit
Privacy enhanced