SeaMonkey is a free and open-source Internet suite. It is the continuation of the former Mozilla Application Suite, based on the same source code, which itself grew out of Netscape Communicator and formed the base of Netscape 6 and Netscape 7.

SeaMonkey was created in 2005 after the Mozilla Foundation decided to focus on the standalone projects Firefox and Thunderbird. The development of SeaMonkey is community-driven, in contrast to the Mozilla Application Suite, which until its last released version (1.7.13) was governed by the Mozilla Foundation. The new project-leading group is called the SeaMonkey Council.

Compared to Firefox, the SeaMonkey web browser keeps the more traditional-looking interface of Netscape and the Mozilla Application Suite. It also retains the legacy XPCOM-based add-on system which allows the user to extend SeaMonkey by modifying add-ons for Thunderbird or the add-ons that were formerly compatible with Firefox before the latter switched to WebExtensions.

Components

SeaMonkey consists of a web browser (which is a descendant of the Netscape family), an email and news client program (SeaMonkey Mail & Newsgroups, which shares code with Mozilla Thunderbird), an HTML editor (SeaMonkey Composer) an IRC client (ChatZilla), and an RSS feed reader. The software suite supports skins. It comes with two skins in the default installation, Modern and Classic.

Mail

SeaMonkey Mail & Newsgroups 2.53.17.1

SeaMonkey Mail is a traditional e-mail client that includes support for multiple accounts, junk mail detection, message filters, HTML message support, and address books, among other features such as a calendar. It shares code with Mozilla Thunderbird; both Thunderbird and SeaMonkey are built from Mozilla's comm-central source tree.

Composer

SeaMonkey Composer 2.53.17.1

SeaMonkey Composer is a WYSIWYG HTML editor descended from Mozilla Composer. Its main user interface features four tabs: Normal (WYSIWYG), HTML tags, HTML code, and browser preview. The generated code is HTML 4.01 Transitional.

Naming

To avoid confusing organizations that still want to use the original Mozilla Application Suite, the new product needed a new name. After initial speculation by members of the community, a July 2, 2005 announcement confirmed that SeaMonkey would officially become the name of the Internet suite superseding the Mozilla Application Suite.

"Seamonkey" (with a lowercase "m") refers to brine shrimp and had been used by Netscape and the Mozilla Foundation as a code name for the never-released Netscape Communicator 5 and later the Mozilla Application Suite itself. Originally, the name "Seamonkey" was derived by Netscape management to replace "Buttmonkey", which their developers had chosen following an internal contest for the codename.

The SeaMonkey Council has now trademarked the name with help from the Mozilla Foundation. The project uses a separate numbering scheme, with the first release being called SeaMonkey 1.0. Despite having a different name and version number, SeaMonkey 1.0 is based on the same code as Mozilla Application Suite 1.7.

For trademark and copyright reasons, Debian rebranded SeaMonkey and distributed it as Iceape until 2013.

History

On March 10, 2005, the Mozilla Foundation announced that it would not release any official versions of Mozilla Application Suite beyond 1.7.x, since it had now focused on the standalone applications Firefox and Thunderbird. However, the Foundation emphasized that it would still provide infrastructure for community members who wished to continue development. In effect, this meant that the suite would still continue to be developed, but now by the SeaMonkey Council instead of the Mozilla Foundation.[citation needed]

SeaMonkey was first released on September 15, 2005. SeaMonkey 1 was released on January 30, 2006.

Core Mozilla project source code was licensed under a disjunctive tri-license (before changing to MPL 2.0) that gave the choice of one of the three following sets of licensing terms: Mozilla Public License, version 1.1 or later, GNU General Public License, version 2.0 or later, GNU Lesser General Public License, version 2.1 or later.

Release history

Parts of this table are based on the SeaMonkey , and .

Release history
Gecko branchVersionRelease dateSignificant changes
1.8.0Unsupported: 1.0January 30, 2006Official version 1.0 release.
Unsupported: 1.0.1April 13, 2006Security updates and native support for Intel-based Macintosh computers, via Universal Binary.
Unsupported: 1.0.2June 1, 2006Stability improvement and security fixes.
Unsupported: 1.0.3July 27, 2006Stability improvement and security fixes.
Unsupported: 1.0.4August 2, 2006Small fix for a regression with the Microsoft Media Server protocol in 1.0.3.
Unsupported: 1.0.5September 14, 2006Stability improvement and security fixes.
Unsupported: 1.0.6November 8, 2006Stability improvement and security fixes.
Unsupported: 1.0.7December 20, 2006Stability improvement and security fixes.
Unsupported: 1.0.8February 27, 2007Stability improvement and security fixes.
Unsupported: 1.0.9May 30, 2007Stability improvement and security fixes. Marks the end of life for SeaMonkey 1.0.x series.
1.8.1Unsupported: 1.1January 18, 2007Official version 1.1 release.
Unsupported: 1.1.1February 28, 2007Stability improvement and security fixes.
Unsupported: 1.1.2May 30, 2007Stability improvement and security fixes.
Unsupported: 1.1.3July 19, 2007Stability improvement and security fixes.
Unsupported: 1.1.4August 3, 2007Stability improvement and security fixes.
Unsupported: 1.1.5October 19, 2007Stability improvement and security fixes.
Unsupported: 1.1.6November 5, 2007Several small problems in displaying certain web pages corrected
Unsupported: 1.1.7November 30, 2007Stability improvement and security fixes. Problem with running SeaMonkey from read-only application directories corrected. The last to be built for Solaris 8.
Unsupported: 1.1.8February 7, 2008Stability improvement and security fixes.
Unsupported: 1.1.9March 25, 2008Stability improvement and security fixes.
Unsupported: 1.1.10July 2, 2008Stability improvement and security fixes.
Unsupported: 1.1.11July 15, 2008Stability improvement and security fixes.
Unsupported: 1.1.12September 23, 2008Stability improvement and security fixes.
Unsupported: 1.1.13November 12, 2008Stability improvement and security fixes.
Unsupported: 1.1.14December 16, 2008Stability improvement and security fixes.
Unsupported: 1.1.15March 18, 2009Stability improvement and security fixes.
Unsupported: 1.1.16April 8, 2009Stability improvement and security fixes.
Unsupported: 1.1.17June 22, 2009Stability improvement and security fixes.
Unsupported: 1.1.18September 3, 2009Stability improvement and security fixes.
Unsupported: 1.1.19March 16, 2010Stability improvement and security fixes. The last to support Windows 98/Me. The last to be built for Solaris 10.
1.9.1Unsupported: 2.0October 27, 2009Official version 2.0 release.
Unsupported: 2.0.1December 15, 2009Stability improvement and security fixes.
Unsupported: 2.0.2January 11, 2010Stability improvement and security fixes.
Unsupported: 2.0.3February 17, 2010Stability improvement and security fixes.
Unsupported: 2.0.4March 30, 2010Stability improvement and security fixes.
Unsupported: 2.0.5June 22, 2010Stability improvement and security fixes.
Unsupported: 2.0.6July 20, 2010Stability improvement and security fixes.
Unsupported: 2.0.7September 7, 2010Stability improvement and security fixes.
Unsupported: 2.0.8September 15, 2010Stability improvements only.
Unsupported: 2.0.9October 20, 2010Stability improvement and security fixes.
Unsupported: 2.0.10October 28, 2010Security fix.
Unsupported: 2.0.11December 9, 2010Stability improvement and security fixes.
Unsupported: 2.0.12March 2, 2011Security fix.
Unsupported: 2.0.13March 23, 2011Stability improvement and security fixes.
Unsupported: 2.0.14April 28, 2011Stability improvement and security fixes. This is the last version to support Mac OS X 10.4 Tiger and PowerPC Macs
2.0Unsupported: 2.1June 10, 2011Official version 2.1 release. The last to be built for OS/2.
5.0Unsupported: 2.2July 7, 2011Official version 2.2 release.
6.0Unsupported: 2.3August 16, 2011Official version 2.3 release.
Unsupported: 2.3.1August 23, 2011Official version 2.3.1 release. Added a security certificate in order to avoid disabling future automatic software updates.
Unsupported: 2.3.2August 31, 2011Official version 2.3.2 release. Removed root certificate for . Many downloads erroneously identify themselves as version 2.3.1.
Unsupported: 2.3.3September 6, 2011Official version 2.3.3 release. Removed trust exceptions for certificates issued by Staat der Nederlanden. Fixed an error with .gov.uk domains.
7.0Unsupported: 2.4September 27, 2011Official version 2.4 release.
Unsupported: 2.4.1September 29, 2011Official version 2.4.1 release.
8.0Unsupported: 2.5November 22, 2011Official version 2.5 release.
9.0Unsupported: 2.6December 20, 2011Official version 2.6 release.
Unsupported: 2.6.1December 22, 2011Official version 2.6.1 release.
10.0Unsupported: 2.7January 31, 2012Official version 2.7 release.
Unsupported: 2.7.1February 10, 2012Official version 2.7.1 release.
Unsupported: 2.7.2February 17, 2012Official version 2.7.2 release.
11.0Unsupported: 2.8March 13, 2012Official version 2.8 release.
12.0Unsupported: 2.9April 24, 2012Official version 2.9 release.
Unsupported: 2.9.1April 30, 2012Official version 2.9.1 release. This is the last version to support Windows 2000.
13.0Unsupported: 2.10June 6, 2012Official version 2.10 release. Introduction of tabs lazy loading.
Unsupported: 2.10.1June 16, 2012Official version 2.10.1 release.
14.0Unsupported: 2.11July 17, 2012Official version 2.11 release.
15.0Unsupported: 2.12August 28, 2012Official version 2.12 release.
Unsupported: 2.12.1September 10, 2012Official version 2.12.1 release.
16.0Unsupported: 2.13October 9, 2012Official version 2.13 release.
Unsupported: 2.13.1October 12, 2012Official version 2.13.1 release.
Unsupported: 2.13.2October 27, 2012Official version 2.13.2 release. Last version supported on Mac OS X 10.5
17.0Unsupported: 2.14November 9, 2012Official version 2.14.
Unsupported: 2.14.1November 30, 2012Official version 2.14.1.
18.0Unsupported: 2.15January 8, 2013Official version 2.15 release.
Unsupported: 2.15.1January 20, 2013Official version 2.15.1 release.
Unsupported: 2.15.2February 4, 2013Official version 2.15.2 release.
19.0Unsupported: 2.16February 21, 2013Official version 2.16 release.
Unsupported: 2.16.1March 8, 2013Official version 2.16.1 release.
Unsupported: 2.16.2March 13, 2013Official version 2.16.2 release.
20.0Unsupported: 2.17April 2, 2013Official version 2.17 release.
Unsupported: 2.17.1April 14, 2013Official version 2.17.1 release.
22.0Unsupported: 2.19July 2, 2013Official version 2.19 release.
23.0Unsupported: 2.20August 6, 2013Official version 2.20 release. TLS 1.1 support.
24.0Unsupported: 2.21September 17, 2013Official version 2.21 release. TLS 1.2 support.
25.0Unsupported: 2.22October 30, 2013Official version 2.22 release.
Unsupported: 2.22.1November 18, 2013Official version 2.22.1 release.
26.0Unsupported: 2.23December 12, 2013Official version 2.23 release.
27.0Unsupported: 2.24February 6, 2014Official version 2.24 release.
28.0Unsupported: 2.25March 19, 2014Official version 2.25 release.
29.0Unsupported: 2.26May 2, 2014Official version 2.26.0 release.
Unsupported: 2.26.1June 16, 2014Official version 2.26.1 release.
32.0Unsupported: 2.29September 7, 2014Official version 2.29 release.
Unsupported: 2.29.1September 24, 2014Official version 2.29.1 release.
33.0Unsupported: 2.30October 15, 2014Official version 2.30 release.
34.0Unsupported: 2.31December 4, 2014Official version 2.31 release.
35.0Unsupported: 2.32January 13, 2015Official version 2.32 release.
Unsupported: 2.32.1February 6, 2015Official version 2.32.1 release.
36.0Unsupported: 2.33March 10, 2015Official version 2.33 release.
Unsupported: 2.33.1March 24, 2015Official version 2.33.1 release.
38.0Unsupported: 2.35September 3, 2015Official version 2.35 release.
41.0Unsupported: 2.38September 26, 2015Official version 2.38 release.
42.0Unsupported: 2.39November 8, 2015Official version 2.39 release.
43.0Unsupported: 2.40March 14, 2016Official version 2.40 release. This is the last version to support CPUs without SSE2 under Windows. This is the last version to support Mac OS X 10.6-10.8.
49.0Unsupported: 2.46December 22, 2016Official version 2.46 release.
51.0Unsupported: 2.48July 31, 2017Official version 2.48 release. This is the last version to support GTK2 on Linux.
52.4Unsupported: 2.49.1November 4, 2017Official version 2.49.1 release. Built from the same Extended Support Release (ESR) branch as Firefox 52 ESR and Thunderbird 52.
52.6Unsupported: 2.49.2February 15, 2018Official version 2.49.2 release. Built from the same Extended Support Release (ESR) branch as Firefox 52 ESR and Thunderbird 52.
52.7.3Unsupported: 2.49.3May 4, 2018Official version 2.49.3 release. Built from the same Extended Support Release (ESR) branch as Firefox 52 ESR and Thunderbird 52.
52.9.1Unsupported: 2.49.4July 27, 2018Official version 2.49.4 release. Built from the same Extended Support Release (ESR) branch as Firefox 52 ESR and Thunderbird 52. This is the last version to support plugins other than Flash on macOS.
Unsupported: 2.49.5September 4, 2019Official version 2.49.5 release. Built from the same Extended Support Release (ESR) branch as Firefox 52 ESR and Thunderbird 52. This is the last version to support Windows XP/Server 2003 and Windows Vista/Server 2008. This is the last version to support ALSA on Linux. This is the last version to support NPAPI plugins other than Flash.
60.3 and laterUnsupported: 2.53.1February 28, 2020Updates backported from multiple Extended Support Release (ESR) branches.
Unsupported: 2.53.2May 3, 2020
60.4 and laterUnsupported: 2.53.3July 7, 2020
60.6 and laterUnsupported: 2.53.4September 22, 2020
60.8 and laterUnsupported: 2.53.5November 13, 2020
Unsupported: 2.53.5.1November 17, 2020
Unsupported: 2.53.6January 22, 2021Last version to include support for NPAPI plugins.
Unsupported: 2.53.7March 10, 2021Updates backported from multiple Extended Support Release (ESR) branches.
Unsupported: 2.53.7.1April 15, 2021
Unsupported: 2.53.8June 30, 2021
Unsupported: 2.53.9August 26, 2021
Unsupported: 2.53.9.1September 28, 2021
Unsupported: 2.53.10November 16, 2021
Unsupported: 2.53.10.1December 13, 2021
Unsupported: 2.53.10.2December 28, 2021
Unsupported: 2.53.11March 2, 2022
Unsupported: 2.53.11.1March 25, 2022
Unsupported: 2.53.12May 4, 2022
Unsupported: 2.53.13July 11, 2022
Unsupported: 2.53.14September 29, 2022
Unsupported: 2.53.15January 20, 2023
Unsupported: 2.53.16March 31, 2023
Unsupported: 2.53.17August 4, 2023
Unsupported: 2.53.17.1September 20, 2023
Unsupported: 2.53.18December 9, 2023
Unsupported: 2.53.18.1January 16, 2024
Unsupported: 2.53.18.2March 28, 2024
Unsupported: 2.53.19September 4, 2024
Unsupported: 2.53.20January 7, 2025
Unsupported: 2.53.21June 5, 2025This is the last version to support 32-bit editions.
Unsupported: 2.53.22October 31, 2025Updates backported from multiple Extended Support Release (ESR) branches.
Latest version: 2.53.23December 31, 2025Official version 2.53.23 release. Built from the same Extended Support Release (ESR) branch as Firefox 60 ESR and Thunderbird 60. This is the last version to support Windows 7/Server 2008 R2, Windows 8/Server 2012 and Windows 8.1/Server 2012 R2.

See also

External links

  • Mozilla Foundation (March 10, 2005). . Retrieved March 10, 2005.
  • MozillaZine (June 6, 2005). . Retrieved June 6, 2005.
  • Adot's Notblog (June 6, 2005). . Retrieved June 20, 2005.
  • SeaMonkey Council (July 2, 2005). . Retrieved July 3, 2005.