Warning! The SeaMonkey version
available for download from this page is outdated and may suffer from
known
security vulnerabilities. This page is only available for historic
reference.
We strongly advise you to download the current release
instead.
Release Notes - The release notes describe
new changes, system requirements, installation instructions, and known issues
in this release - please read them carefully before using this version of
SeaMonkey!
If you are using NoScript you might encounter a certificate error when
trying to download SeaMonkey from this site. NoScript tries to force an https
connection for an http only site. It is not a NoScript problem but how the
Mozilla server, from which downloads are delivered, is configured.
In this case please add download.cdn.mozilla.net to the NoScript
"Never force secure (HTTPS) connections" options or turn off NoScript for
this download only. The settings are located in the NoScript options under
"Advanced->HTTPS".
This release includes official Linux x64 and Windows x64 builds.
If on Linux make sure you download the appropriate installer from the
download section. Most recent Linux distributions are provided in x64
(64-bit) versions only. If you choose the wrong version SeaMonkey will
likely not start. The x86 (32-bit) version can be used in some x64
distributions only.
The Windows x64 version is supported on Windows 7 x64 and higher only.
It will not install on an unsupported version. Running the unzipped
package on an unsupported version might result in an error displayed
or in erratic program behaviour. If you use a previous SeaMonkey x86
Windows version please uninstall it before installing the x64 version. Your
profile data will be preserved doing this.
The x86 version can run on any current Windows version starting with Windows
7.
Automatic upgrades from prior versions
are disabled for this release. If you need to upgrade from an earlier
version, please download the full installer from the downloads section and
install SeaMonkey 2.53.1 manually over the previous
version.
Official builds
MD5
sums and SHA1
sums are available for official packages and source tarballs.
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