for Mac
Also available for Windows

Web browser with IRC chat, HTML editing, and more.

  • Total Downloads
  • Downloads Last Week
  • User Rating
  • My Rating

SeaMonkey Description

SeaMonkey is a Web browser that shares much of the same base code as the popular Firefox Web browser. It also contains an advanced e-mail and newsgroup client, IRC chat client, and HTML editor.

The SeaMonkey project is a community effort to deliver production-quality releases of code derived from the application formerly known as "Mozilla Application Suite". Whereas the main focus of the Mozilla Foundation is on Mozilla Firefox and Mozilla Thunderbird, our group of dedicated volunteers works to ensure that you can have "everything but the kitchen sink" and have it stable enough for corporate use.

SeaMonkey Screenshots

Screenshots are not available currently.

What's New in SeaMonkey 2.35

Known Issues
The SSL 3.0 encryption protocol is disabled by default due to security concerns. Legacy websites may still rely on it and will not work with the newer TLS 1.x protocols. SSL 3.0 support can be re-enabled in Preferences under Privacy & Security, SSL.
Lightning does not work with SeaMonkey when icaljs is enabled, which it is by default. As a workaround, disable icaljs by setting the calendar.icaljs pref to false in about:config.
The Remember Passwords add-on breaks password handling. Please disable or uninstall this add-on using the Add-ons Manager.
You cannot set up a new Sync account or pair a device anymore. Workaround: Use an older version of SeaMonkey for such tasks for now.
See Full Release Notes

SeaMonkey Requirements

Operating Systems:

Mac OS X

System Requirements:

  • OS X 10.6 or later

Quick Specifications

See Full Specifications

More From Mozilla Foundation

See More

Essential Downloads in Browsers

  • Spyder
    MySpace social network browser.
  • Chromium
    Fast and stable open-source browser.
  • Google Chrome
    Modern and fast Web browser.
  • Opera
    High-performance Web browser.
  • Apple Safari
    Apple's Web browser.
  • Choosy
    Forget the default browser, Choosy opens links in the right browser.
See More