SeaMonkey

SeaMonkey is a free and open source Internet application suite, which uses the Gecko rendering engine. It works on many operating systems. It is very useful, and includes an e-mail client, a calendar, a HTML editor, an IRC client, and a web browser. It is made by the SeaMonkey Council, formerly by Mozilla Foundation.

SeaMonkey

SeaMonkey Navigator 2.53.17.1 on Windows 10
Developer(s)	SeaMonkey Council
Initial release	January 30, 2006; 19 years ago (2006-01-30)
Stable release	2.53.22[1]  / 31 October 2025
Repository	gitlab.com/seamonkey-project/seamonkey-2.53-mozilla
Written in	C++, XUL, XBL, JavaScript
Engines	Gecko, SpiderMonkey
Operating system	Windows, macOS, Linux[2]
Available in	26 languages[2]
List of languages Belarusian, Catalan, Chinese (Simplified), Chinese (Traditional), Czech, Dutch, English (US), English (British), Finnish, French, Galician, German, Hungarian, Italian, Japanese, Lithuanian, Norwegian (Bokmål), Polish, Portuguese (Portugal), Russian, Slovak, Spanish (Argentina), Spanish (Spain), Swedish, Turkish, Ukrainian
Type	Internet suite
License	MPL-2.0[3]
Website	seamonkey-project.org

History

On March 10, 2005 the Mozilla Foundation said that they will not develop the Mozilla Application suite, including the Netscape web browser, because Firefox and Thunderbird were more popular. The SeaMonkey Council renamed the project SeaMonkey and continued its development.

Features

The web browser of SeaMonkey contains a lot of features used in new web browsers like tabbed browsing, pop-up blocking, e-mail, newsgroups, web editing software, spell checking, and an address book.

Optionally included in the SeaMonkey suite is an IRC chat application.

Related pages

• List of IRC clients