Edit: Due to the fact that this article is old, the installation instructions may not work anymore. In order to successfully install the latest version of SeaMonkey, please access the seamonkey tag and open the latest article (the one on top).
The latest installation instructions for SeaMonkey
Hello Linux Geeksters. As you may know, SeaMonkey is an internet suite that includes a web browser, an email and newsgroup client, a HTML editor, an IRC chat and web development tools.
The latest version available is SeaMonkey 2.25, which has been recently released, being built on Firefox 28. It comes with a lot of fixes and a bunch of new features. Read the release notes for extra information.
In this article I will show you how to install SeaMonkey 2.25 on Ubuntu 14.04 Trusty Tahr, Ubuntu 13.10 Saucy Salamander, Ubuntu 12.10 Quantal Quetzal, Ubuntu 12.04 Precise Pangolin, Linux Mint 16 Petra, Linux Mint 14 Nadia, Linux Mint 13 Maya and Elementary OS 0.2 Luna.
Because it will be available via the UbuntuZilla repository soon, installing SeaMonkey 2.25 on the listed Ubuntu, Linux Mint and Elementary OS is easy. All you have to do is add the repo and the key to your system, update the local repository index and install the seamonkey-mozilla-build package. Like this:
$ echo -e "deb http://downloads.sourceforge.net/project/ubuntuzilla/mozilla/apt all main" | sudo tee -a /etc/apt/sources.list > /dev/null
$ sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com C1289A29
$ sudo apt-get update
$ sudo apt-get install seamonkey-mozilla-build