Thank you for your review
Email me when discounted: 
Learn how MacUpdate Desktop makes installing apps from MacUpdate.com one-click easy.
Next time, install SeaMonkey with 1-click

Learn how MacUpdate Desktop can install apps on MacUpdate with the simple click of the Install apps with MacUpdate Desktop icon. Plus, keep all your apps updated.

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.

What's New

Version 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, more...


  • OS X 10.6 or later

Similar Software

Open Comparison
Suggest Other Similar Software
Get these apps for
Leave a Review

SeaMonkey User Discussion

To leave a comment, you need to be logged in.
Sort by: Time | Smiles
4 197


Current Version (2.x)


Downloads 220,733
Version Downloads 814
License Free
Date 04 Sep 2015
Platform Intel 64 / OS X / Intel 32
Price Free
download install download install purchase purchase