SeaMonkey 2.10 released

The SeaMonkey project is proud to present SeaMonkey 2.10: The new major release of the all-in-one Internet suite is available for download now! Building on the same Mozilla platform as the newest Firefox release, it delivers the latest developments in web technologies such as HTML5, hardware acceleration and improved JavaScript speed.

SeaMonkey 2.10 is available in 26 languages, for Windows, Mac OS X and Linux.

Most notably, this release features for the first time:

  • The new minimum supported Windows version is now XP SP2, Windows 2000 support has been dropped
  • The domain name is highlighted in the location bar by default now, configurable in Preferences
  • The amount of tabs to be restored concurrently can be configured in Preferences now
  • News username and password auth dialogs have been combined and show for which server the prompt is now
  • The SPDY protocol now enabled by default for faster browsing on supported site
  • The column-fill CSS property has been implemented
  • Experimental support for ECMAScript 6 Map and Set objects has been implemented
  • Support for the CSS3 background-position property extended syntax has been added
  • The :invalid pseudo-class can now be applied to the <form> element
  • The CSS turn unit is now supported
  • Fixed several stability issues

For a more complete list of major changes in SeaMonkey 2.10, see the What’s New in SeaMonkey 2.10 section of the Release Notes, which also contain a list of known issues and answers to frequently asked questions. For a more general overview of the SeaMonkey project (and screen shots!), visit

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