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SeaMonkey for Mac
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SeaMonkey 2.22.1

  -  47.17 MB  -  Open Source
Free Download

Security Status

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of SeaMonkey 2.22.1.


For those interested in downloading the most recent release of SeaMonkey for Mac or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


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If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

Download SeaMonkey 2.22.1
Why is this app published on FileHorse? (More info)

  • SeaMonkey 2.22.1 Screenshots

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    SeaMonkey 2.22.1 Screenshot 1
  • SeaMonkey 2.22.1 Screenshot 2
  • SeaMonkey 2.22.1 Screenshot 3
  • SeaMonkey 2.22.1 Screenshot 4
  • SeaMonkey 2.22.1 Screenshot 5

What's new in this version:

SeaMonkey-specific changes
- Sorting messages by date can now be configured to look at the thread root instead of the newest message in it (pref: mailnews.sort_threads_by_root).
- Plugins doorhangers now allow to activate different plugin types independently.
- The proxy popup is now also available from the MailNews main window.
- A new Recipients column has been added that shows all recipients (To, CC, BCC).
- The default HTML5 audio/video player controls allow to change the playback rate now.
- A "Validate this page" entry has been added to Tools/Web Development.
- The Firefox devtools debugger can now be used to debug SeaMonkey remotely.

Mozilla platform changes
- Web Audio support has been added.
- CSS3 background-attachment:local support to control background scrolling has been implemented.
- Many new ES6 functions have been implemented.
- iframe document content can now be specified inline.
- Fixed several stability issues.

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