SeaMonkey
SeaMonkey
2.49.4

3.8

SeaMonkey free download for Mac

SeaMonkey

2.49.4
16 November 2018

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

Overview

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 in SeaMonkey

Version 2.49.4:
  • Contains (among other changes) the major changes relative to SeaMonkey 2.49.3:
  • Uses the same backend as Firefox and contains the relevant Firefox 52.9.0 ESR security fixes.
  • Shares most parts of the mail and news code with Thunderbird.
  • Among the general platform and mail fixes this release contains backported fixes from Thunderbird for the EFAIL security vulnerability.
  • SeaMonkey now uses gtk3 on Linux. If you experience a problem because of this please file a bug and link it to Switch Linux builds to GTK3 with SeaMonkey 2.49. Please try another OS theme first. Some of them are buggy and cause problems with SeaMonkey, Thunderbird and Firefox.

342 SeaMonkey Reviews

See all

Rate this app:

Robertcoogan
21 July 2010

Most helpful

Normally I am a Safari user, but I use SeaMonkey to do online Grad school work. It gives the illusion of being bare bones, but it is anything but. Setup is a breeze, the exact same setup as Thunderbird. Newsgroups format is very simple and setup with UMUC's servers went without a hitch. A very good multi-purpose app.
Like (5)
Version 2.0.6
Plotzenhots
17 July 2019
Beta 2.49.5. http://ftp.mozilla.org/pub/seamonkey/candidates/2.49.5-candidates/build1/mac/
Like
Version 2.49.4
Drforsyth
11 January 2019
Just uninstalled Seamonkey because it has become unresponsive. Will try to download a fresh copy and hope it works because I have depended on Seamonkey for years.
Like
Version 2.49.4
Romalasa
05 October 2018
Less space, other tools doing similar job & more used to them. No reflection on SeaMonkey capabilities or ease-of-use.
Like (1)
Version 2.49.3
cathy247
26 June 2018
SeaMonkey is the best browser I've used. It lets me organize my browsing, sort bookmarks and track data while I investigate issues on the net. I don't need separate applications to work with my email and browsing, SeaMonkey does it all. My only issue is that it can sometimes be slowed down by the spinning wheel, requiring me to press the <Esc> key multiple times to exit from the blockage.
Like (1)
Version 2.49.3
orsobou4
23 February 2018
The first thing this software did, was alerting that the 2.49.2 did not work on my machine, so I tried the 2.49.1 instead. When I tried myself at the add-ons, there was no ad blocker available, so I had to throw this thing out of my system.
Like
Version 2.49.2
cathy247
13 October 2017
This version of SeaMonkey killed my previous Mac to the point I had to buy a new machine. Even now the Mac can browse using his version but as soon as I try to access email it crashes. Its a terrible shame as S/M is my preferred browser.
Like
Version 2.48
1 answer(s)
Scion777
Scion777
18 November 2017
WHAT??? Ha ha ha ha. Sorry, but a web browser does not ruin a piece of hardware. Sounds like some reseller saw you coming - sort of like the wife in a used car lot .......
Like (3)
didifri
06 August 2017
super
Like
Version 2.48
orsobou4
04 August 2017
Every time I tried to open this software, it crashed.
Like
Version 2.48
RogerKatz
24 July 2017
Is the current version 2.48 or is it 2.46? The developer website says the current release is 2.46.
Like
Version 2.46
Derekcurrie
22 July 2017
Despite lagging news on the developer site and blog, this appears to be the Final version of 2.4.8, versus it being another beta release.
Like
Version 2.48
Free

3.8

App requirements: 
  • Intel 64
  • Intel 32
  • OS X 10.9.0 or later
Category: 
Developer Website: 
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