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SeaMonkey 2.12.1

  -  37.72 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 2.12.1.


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 2.12.1

  • SeaMonkey 2.12.1 Screenshots

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    SeaMonkey 2.12.1 Screenshot 1
  • SeaMonkey 2.12.1 Screenshot 2
  • SeaMonkey 2.12.1 Screenshot 3
  • SeaMonkey 2.12.1 Screenshot 4
  • SeaMonkey 2.12.1 Screenshot 5

What's new in this version:

- Added support for SPDY networking protocol v3.
- Implemented WebGL enhancements, including compressed textures for better performance.
- Optimized memory usage for add-ons.
- Implemented the CSS word-break property.
- Implemented high precision event timer.
- HTML5: Added native support for the Opus audio codec.
- HTML5: Added support for the source element media attribute.
- HTML5: Added support for the audio element and video element played attribute.
- Fixed several stability issues.

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