Sign In

Welcome! Log into your account

Forgot your password?

Create an account

Sign Up

Welcome! Register for an account

A password will be e-mailed to you.

Password Recovery

Recover your password

A password will be e-mailed to you.

Available for:

SeaMonkey 2.53.13 – Final by Mozilla

SeaMonkey 2.53.13 – Final by Mozilla
Download FreeDownload Buy Now

Mozilla SeaMonkey is an all-in-one internet application suite. It has tabbed web-browser, advanced e-mail and newsgroup client, IRC chat client, and HTML editor made simple. All your Internet needs contained in one application.

Mozilla SeaMonkey is sure to appeal to advanced users, web developers and corporate users. Because it contains an Internet browser, email and newsgroup client with an included web feed reader, HTML editor, IRC chat and web development tools.

Powered by Mozilla Under the hood, SeaMonkey uses much of the same Mozilla source code which powers such successful siblings as Firefox and Thunderbird.

Building on the same Mozilla platform as the newest Firefox release, it delivers the latest developments in web technologies. Such as HTML5, hardware acceleration and improved JavaScript speed.

SeaMonkey has inherited the successful all-in-one concept of the original Netscape Communicator. And now continues that product line based on the modern, cross-platform architecture provided by the Mozilla project.

Mozilla SeaMonkey Features:

  • The Internet browser at the core of the SeaMonkey suite uses the same rendering engine and application platform as its sibling Mozilla Firefox. Also it has popular features like tabbed browsing, feed detection, popup blocking, smart location bar.
  • The Mail and Newsgroups client shares lots of code with Mozilla Thunderbird. It includes features adaptive Junk mail filtering, tags and mail views, web feeds reading, tabbed messaging, multiple accounts, S/MIME. Also there are address books with LDAP support and is ready for both private and corporate use.
  • Additional components include an easy-to-use HTML Editor, the ChatZilla IRC chat application and web development tools like a DOM Inspector and a JavaScript debugger.
  • In addition, you can extend SeaMonkey with numerous Add-Ons that provide additional functionality and customization for a complete Internet experience.

What’s New in SeaMonkey 2.53.13:

  • Updates to devtools.
  • Updates to build configuration.
  • Starting the switch from Python 2 to Python 3 in the build system.
  • Removal of array comprehensions, legacy iterators and generators bug 1414340 and bug 1098412.
  • Adding initial optional chaining and Promise.allSettled() support.

What’s New in SeaMonkey 2.53.12:

  • Format Toolbar forgets its hidden status when switching to other view modes
  • Remove obsolete plugin code from SeaMonkey
  • Fix a few strict warnings in SeaMonkey
  • Remove Run Flash from Site permissions and page info
  • Use fixIterator and replace use of removeItemAt in FilterListDialog
  • Remove RDF usage in tabmail.js
  • Implement ‘Edit Template’ and ‘New Message From Template’ commands and UI
  • [SM] Implement ‘Edit Draft’ command and hide it when not in a draft folder (port Thunderbird bug 1106412
  • Messages in Template folder need “Edit Template” button in header (like for Drafts)
  • Refactor and simplify the feed Subscribe dialog options update
  • Add system memory and disk size and placeDB page limit to about:support
  • Remove warning about missing plugins in SeaMonkey 2.53 and 2.57

What’s New in SeaMonkey 2.53.11.1:

  • Fix edge case when setting IntersectionObserver threshold
  • OAuth2 prefs should use realuserName instead of username

What’s New in SeaMonkey 2.53.11:

  • Remove obsolete MOZ_EXTENSIONS check in suite
  • Add connect button to cZ Networks Editor
  • Remove freenode remnants from ChatZilla in SeaMonkey
  • Prefer secure over insecure protocol in network list in ChatZilla
  • Clean up repo links in debugQA
  • Fix misspelled references to macOS in suite
  • Remove obsolete references to Java and Flash
  • Help button not working in delete cert dialog
  • Rearrange Message Filter Dialog to make room for new features
  • Use Insert key as shortcut to create new message filters
  • Rename some variables used in SeaMonkey’s FilterListDialog to match Thunderbird’s
  • Implement Copy to New message filter functionality
  • Add move to top / bottom buttons to message filters
  • Add preference to not prompt for message filter deletion
  • Clean up folder handling in FilterListDialog
  • Add refresh function to Filter list dialog so that it can be updated when already open and new filters are added externally
  • Use listbox rather than tree in FilterListDialog
  • Mail&News’ start.xhtml: “We” link broken
  • Add search functionality to filter dialog
  • Move the taskbar refresh timer in SeaMonkey to idle dispatc
  • Prevent subresource loads from showing the progress indicator on the tab in SeaMonkey

What’s New in SeaMonkey 2.53.10.2:

  • Obtain Windows code-signing certificate for SeaMonkey binary and update signing
  • Support SHA-2 hashes in CertIDs in OCSP responses
  • Fix rust 1.57 Windows linking for SeaMonkey 2.53

Homepage – https://www.seamonkey-project.org

System Requirements:

Windows Operating Systems

  • Windows 7
  • Windows 8
  • Windows 8.1
  • Windows 10

Minimum Hardware

SeaMonkey on Windows needs a CPU supporting the SSE2 instruction set.

  • Pentium 4 1.5GHz (Recommended: Intel Core 2 Duo 1.8GHz or greater)
  • 1 GB RAM
  • 500 MB of free hard drive space

Mac Operating Systems

  • Mac OS X 10.9 or higher

Minimum Hardware

  • Macintosh computer with an Intel processor
  • 500 MB of free hard drive space

Linux Software Requirements

Please note that Linux distributors may provide packages for your distribution which have different requirements.

  • The following library versions (or compatible) are required:
    • GTK+ 3.4 or higher
    • GLib 2.22 or higher
    • Pango 1.14 or higher
    • X.Org 1.0 or higher (Recommended: 1.7 or higher)
    • libstdc++ 4.6.1 or higher
  • Recommended for optimal functionality:
    • NetworkManager 0.7 or higher
    • DBus 1.0 or higher
    • GNOME 2.16 or higher

Minimum Hardware

  • Pentium 2 800MHz (Recommended: Intel Core 2 Duo 1.8GHz or greater)
  • 1 GB RAM
  • 500 MB of free hard drive space