SeaMonkey 2.48

Released July 31, 2017

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 The SeaMonkey version available for download from this page is outdated and may suffer from known security vulnerabilities.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".
  • Automatic upgrades from previous versions are, for most configurations, 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 2.48 manually over the previous version.

Official builds

MD5 sums and SHA1 sums are available for official packages and source tarballs.

Language Version Windows Mac OS X Linux
Chinese (Simplified) 中文 (简体) 2.48 Download Download Download
Chinese (Traditional) 正體中文 (繁體) 2.48 Download Download Download
Czech Čeština 2.48 Download Download Download
Dutch Nederlands 2.48 Download Download Download
English (US) English (US) 2.48 Download Download Download
English (British) English (British) 2.48 Download Download Download
French Français 2.48 Download Download Download
German Deutsch 2.48 Download Download Download
Hungarian Magyar 2.48 Download Download Download
Italian Italiano 2.48 Download Download Download
Japanese 日本語 2.48 Download Download Download
Lithuanian lietuvių kalba 2.48 Download Download Download
Polish Polski 2.48 Download Download Download
Portuguese (Portugal) Português (Europeu) 2.48 Download Download Download
Russian Русский 2.48 Download Download Download
Slovak slovenčina 2.48 Download Download Download
Spanish (Argentina) Español (de Argentina) 2.48 Download Download Download
Spanish (Spain) Español (de España) 2.48 Download Download Download
Swedish Svenska 2.48 Download Download Download

Source code

The source code is available either as a tar package or from the source repository.

  • Source Code Tarball (xz, 168 MB) - note that it doesn't unpack a subdirectory itself, so create a directory to unpack it in.
  • The README file explains how to pull SeaMonkey 2.48 from the source repository.

Language Packs

Contributed builds (other platforms)

These are unofficial builds and may be configured differently than the official SeaMonkey builds. Please read their "readme" files for further information.

Linux/x86_64
Linux/x86_64 .tar.bz2 (readme) (MD5 sum) (SHA1 sum)