Install SeaMonkey

About SeaMonkey

The SeaMonkey project is a community effort to develop the SeaMonkey all-in-one internet application suite. Such a software suite was previously made popular by Netscape and Mozilla, and the SeaMonkey project continues to develop and deliver high-quality updates as well as new features and improvements to this concept. Containing an Internet browser, email & newsgroup client, HTML editor, IRC chat and web development tools, SeaMonkey is sure to appeal to advanced users, web developers and corporate users. SeaMonkey...

What's new in 2.53.24

The SeaMonkey project is proud to present SeaMonkey 2.53.24: The new release of the all-in-one Internet suite is available for free download now! 2.53.24 is an incremental update on the 2.53.x branch and incorporates a number of enhancements, changes and fixes to the application as well as those from the underlying platform code. We have also added many fixes and backports for overall platform stability. Please be advised that 2.53.21 was the last release with 32-bit versions for Windows and Linux, this version is only 64-bit. Our Windows signing key expired and the way new keys are distributed totally changed. We are working on acquiring a new key and integrating the new signing process into our infra, but it will take some time to complete. So until we accomplish this, starting with 2.53.21b1, our Windows releases will be distributed unsigned. If you are concerned about the integrity of the downloads please check the binaries against the checksum files we provide. If you are using macOS 15.1.x please update to 15.2. Because of a bug in the OS SeaMonkey can not be started via Finder or Dock without workarounds. This applies to older SeaMonkey versions too. We are aware of numerous websites breaking because of only supporting the latest Chrome or Firefox versions. We are trying to address this and progress has been made in a different source code branch but the code is not ready for general distribution yet. SeaMonkey 2.53.24 is available in 24 languages, for Windows x64, macOS x64 and Linux x64. Automatic upgrades from previous 2.53.x versions are enabled for this release,...

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