SeaMonkey 2.5 Beta 1

Released September 30, 2011

Warning! The SeaMonkey version available for download on this page is an outdated testing-only preview of the next generation of our Internet suite. Please test a newer preview version instead of this one.
For daily use, we strongly advise you to download the current stable 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!

Official builds

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

Language Version Windows Mac OS X Linux
Belarusian Беларуская 2.5b1 Download Download Download
Catalan català 2.5b1 Download Download Download
Chinese (Simplified) 中文 (简体) 2.5b1 Download Download Download
Czech Čeština 2.5b1 Download Download Download
Dutch Nederlands 2.5b1 Download Download Download
English (US) English (US) 2.5b1 Download Download Download
English (British) English (British) 2.5b1 Download Download Download
Finnish suomi 2.5b1 Download Download Download
French Français 2.5b1 Download Download Download
Galician Galego 2.5b1 Download Download Download
German Deutsch 2.5b1 Download Download Download
Hungarian Magyar 2.5b1 Download Download Download
Italian Italiano 2.5b1 Download Download Download
Japanese 日本語 2.5b1 Download Download Download
Lithuanian lietuvių kalba 2.5b1 Download Download Download
Norwegian (Bokmål) Norsk bokmål 2.5b1 Download Download Download
Polish Polski 2.5b1 Download Download Download
Portuguese (Portugal) Português (Europeu) 2.5b1 Download Download Download
Russian Русский 2.5b1 Download Download Download
Slovak slovenčina 2.5b1 Download Download Download
Spanish (Argentina) Español (de Argentina) 2.5b1 Download Download Download
Spanish (Spain) Español (de España) 2.5b1 Download Download Download
Swedish Svenska 2.5b1 Download Download Download
Turkish Türkçe 2.5b1 Download Download Download

Source code

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

  • Source Code Tarball (bzip, 83 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 2.5 Beta 1 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)