SeaMonkey 2.12 released

The SeaMonkey project is proud to present SeaMonkey 2.12: 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 2.12 is available in 26 languages, for Windows, Mac OS X and Linux.

Most notably, this release features for the first time:

  • Added support for SPDY networking protocol v3
  • Implemented WebGL enhancements, including compressed textures for better performance
  • Optimized memory usage for add-ons
  • Implemented the CSS word-break property
  • Implemented high precision event timer
  • HTML5: Added native support for the Opus audio codec
  • HTML5: Added support for the source element media attribute
  • HTML5: Added support for the audio element and video element played attribute
  • Fixed several stability issues

For a more complete list of major changes in SeaMonkey 2.12, see the What’s New in SeaMonkey 2.12 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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