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SeaMonkey for Mac

SeaMonkey 2.31

  -  61.52 MB  -  Open Source

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 2.31.


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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  • SeaMonkey 2.31 Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

    SeaMonkey 2.31 Screenshot 1
  • SeaMonkey 2.31 Screenshot 2
  • SeaMonkey 2.31 Screenshot 3
  • SeaMonkey 2.31 Screenshot 4
  • SeaMonkey 2.31 Screenshot 5

What's new in this version:

- Support for H264 (MP4) is now built in on Mac OS X Snow Leopard (10.6) and newer through native APIs.
- HTTP/2 (draft14) and ALPN have been implemented.
- Added ability to recover from a locked process in the "SeaMonkey is already running" dialog on Windows.
- Added ECDH support for WebCrypto.
- The console.table function has been added to the Error Console.
- CSS transitions start correctly now when started at the same time as changes to display, position, overflow, and similar properties.
- Fixed several stability issues.