Download Mozilla SeaMonkey 2.12

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Mozilla has released version 2.12 of SeaMonkey. SeaMonkey is the continuation of the former Mozilla Application Suite and consists of a web browser and programs for e-mailing and reading news. A simple HTML editor is also provided. Unlike the Mozilla Application Suite, SeaMonkey is maintained by the community, while the SeaMonkey Council oversees maintenance. The changelog for version 2.12 looks like this:

SeaMonkey specific changes

  • none.

Mozilla platform changes

  • 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.

the changes page lists a more detailed overview of new features and fixes relative to our last stable release, SeaMonkey 2.10. Relevant security fixes are listed on Security Advisories for SeaMonkey.

Version number 2.12
Release status Final
Operating systems Windows 7, Windows 2000, Linux, Windows XP, macOS, Windows Server 2003, Windows Vista, Windows Server 2008
Website Mozilla Foundation
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File sizes

19.50MB – 38.20MB

License type Freeware
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