SeaMonkey 2.33.1

Web-browser, advanced e-mail, newsgroup and feed client, IRC chat, and HTML editing made simple—all your Internet needs in one application.

The SeaMonkey® Project

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

powered by Mozilla Under the hood, SeaMonkey uses much of the same Mozilla source code which powers such successful siblings as Firefox and Thunderbird. Legal backing is provided by the Mozilla Foundation.

Project News

March 23, 2015

SeaMonkey 2.33.1

As part of Mozilla's ongoing stability and security update process, SeaMonkey 2.33.1 is now available for Windows, Mac, and Linux as a free download from

We recommend that all SeaMonkey users upgrade to this latest release.

For a list of changes and more information, please review the SeaMonkey 2.33 Release Notes.

The SeaMonkey Suite

SeaMonkey has inherited the successful all-in-one concept of the original Netscape Communicator and continues that product line based on the modern, cross-platform architecture provided by the Mozilla project.