You are here

SeaMonkey Portable

internet suite

Download from

Version for Windows, English
86MB download / 157-302MB installed
All Languages | Antivirus Scan | Details

Runs anywhere (cloud, removable, local) without 'installing'. Use the Platform for easy installs and automatic updates.

Make a Donation - Support development & hosting, Make a Donation - Support SeaMonkey development


The SeaMonkey project is a community effort to develop the SeaMonkey all-in-one internet application suite. 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. Under the hood, SeaMonkey uses much of the same Mozilla source code which powers such successful siblings as Firefox and Thunderbird. SeaMonkey Portable is a dual-mode 32-bit and 64-bit app, ensuring SeaMonkey runs as fast as possible on every PC.


Download Details

Open Source Initiative Approved License
  • Publisher: Mozilla & (John T. Haller)
  • Date Updated: 2024-03-28
  • Date Added: 2009-10-29
  • System Requirements: Windows 7, 8, 10, 11
  •      (Windows XP/Vista: 2.49.5)
  • App License: Open Source (MPL/GPL/LGPL under Mozilla EULA)
  • Source: SeaMonkey, Launcher source included, Installer
  • SHA256 Hash: 860d077a6c2d6466d869d152e516e0ab40e86d7c1df2410200cb9a1713b00567 (English)

Mozilla®, SeaMonkey® and the SeaMonkey logo are registered trademarks of the Mozilla Foundation and are used under license.