SeaMonkey for Mac

Quick overview

Mozilla is best known for Firefox, but the Mozilla Foundation produces other projects as well. SeaMonkey is an all-in-one communication suite that aims to combine a web browser, advanced email and newsgroup client, feed reader, IRC chat, and an HTML editor into a single package.

What SeaMonkey contains

• Browser
• Mail and newsgroups client
• Address book
• IRC chat client
• Composer (HTML editor)

To move between these components, open the Window menu in the menu bar and choose the application you want to use (Browser, Mail & Newsgroups, Address Book, IRC Chat, or Composer).

Technical background and compatibility

Under the hood SeaMonkey shares much of the same Mozilla source code that powers projects such as Firefox, Thunderbird and others. The 2.0 release was modernized using a Firefox 3.5.4 codebase and brings the suite closer to Firefox in areas like user profiles, add-on support, and interface behavior. Tabs can now be reopened after closing, and the management of usernames and passwords has been significantly improved.

Account setup is straightforward, IMAP retrieval has been sped up, and mail synchronization is enabled by default on macOS. Mailboxes, folders and individual messages can now be opened in tabs. The OS X appearance has been refreshed to better match Mac aesthetics.

Strengths

• Consolidates multiple internet tools into one package.
• Uses a modernized Mozilla core for better compatibility with extensions and profiles.
• Improved mail performance and tabbed message viewing.
• More Mac-friendly visual theme and behavior.

Limitations and criticisms

• The suite’s all-in-one approach can feel outdated to some users.
• The IRC client remains utilitarian and may intimidate newcomers.
• There’s no simple built-in option to import saved passwords from previous SeaMonkey releases or from Firefox, which some users find inconvenient.
• Longtime users may feel the interface and workflow have drifted away from the classic Netscape-style experience.

Notable changes in the latest release

• You can now disable plugins across the entire suite, not just within Mail & Newsgroups.
• Dropping a URL from the clipboard into the Download Manager will start downloading that resource automatically.
• Add-on synchronization can be set up without installing the separate Add-ons Sync Prefs extension.
• Non-autoplaying HTML5 video elements display a large play icon so media is easier to start.
• The File and Move Bookmarks dialogs are now resizable, improving bookmark management.

Alternatives

If you prefer a leaner or different approach, lightweight browser projects such as Arora are available free of charge and may suit users who want a simple browser without the extra integrated tools.