Software Update: Mozilla SeaMonkey 2.23

Mozilla has released version 2.23 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 list of changes for this release is as follows:

SeaMonkey specific changes

  • Download progress is now shown in the Mac OS X app dock icon.
  • EXIF orientation is now being used when displaying attached images in MailNews.
  • “This folder is being processed… to get messages.” alerts on active MailNews folders now identify the account or folder.
  • MailNews notifications have a new look.
  • see the changes page for a more complete overview.

Mozilla platform changes

  • All plugins, with the exception of recent Flash plugins, now default to click-to-play.
  • The password manager now supports script-generated password fields.
  • Support for H.264 on Linux is now available if the appropriate GStreamer plugins are installed.
  • Support for MP3 decoding on Windows XP has been added, completing MP3 support across Windows OS versions.
  • The CSP implementation now supports multiple policies, including the case of both an enforced and Report-Only policy, per the spec.
  • There is no longer a prompt when websites use appcache.
  • Support for the CSS image orientation property has been added.
  • IndexedDB can now be used as an “optimistic” storage area so it does not require any prompts and data is stored in a pool with LRU eviction policy, in short temporary storage.
  • When displaying a standalone images, the EXIF ​​orientation information contained within the JPEG image is now matched (bug 298619).
  • Page load times have been improved due to no longer decoding images that are not visible (bug 847223).
  • Support for the AudioToolbox MP3 backend has been added on Mac OS X (bug 914479).
  • Fixed several stability issues.

the changes page lists a more detailed overview of new features and fixes relative to our last stable release, SeaMonkey 2.22. Relevant security fixes are listed on Security Advisories for SeaMonkey.

Version number 2.23
Release status Final
Operating systems Windows 7, Linux, Windows XP, macOS, Windows Vista, Windows 8
Website Mozilla Foundation
File sizes

24.40MB – 48.10MB

License type Freeware