SeaMonkey 2.53.15 by Mozilla

Discover the Benefits of SeaMonkey - A Free and Open-Source Internet Suite

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

Mozilla SeaMonkey is bound to attraction to advanced users, web builders, and company users because it contains an Internet browser, e-mail, and newsgroup client with an included web feed reader, HTML editor, IRC chat, and web growth tools.

Powered by Mozilla Under the hood, SeaMonkey makes use of a lot of the same Mozilla source code which powers such profitable siblings as Firefox and Thunderbird.

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

SeaMonkey has inherited the profitable all-in-one idea of the unique Netscape Communicator. And now continues that product line based mainly on the modern, cross-platform structure offered by the Mozilla project.

Mozilla SeaMonkey Features:

  • The Internet browser on the core of the SeaMonkey suite makes use of the same rendering engine and application platform as its sibling Mozilla Firefox. Also, it has popular features like tabbed browsing, feed detection, popup blocking, good location bar.
  • The Mail and Newsgroups client shares numerous codes with Mozilla Thunderbird. It includes features for adaptive Junk mail filtering, tags, mail views, web feed reading, tabbed messaging, multiple accounts, and S/MIME. Also, there are address books with LDAP support which are prepared for each non-public and company use.
  • Additional components include an easy-to-use HTML Editor, the ChatZilla IRC chat application, and web growth tools like a DOM Inspector and a JavaScript debugger.
  • In addition, you’ll be able to prolong SeaMonkey with quite a few Add-Ons that provide extra performance and customization for whole Internet expertise.

What’s New in Mozilla SeaMonkey 2.53.15

  • Microtasks and promises
  • Implement queueMicrotask()
  • Remove old synchronous contentPrefService from the tree
  • Remove remaining uses of ‘general.useragent.locale’
  • Migrate to intl.locale.requested.locale list from ‘general.useragent.locale’
  • Introduce a pref to store the BCP47 locale list
  • Remove synchronous certificate verification APIs from nsIX509CertDB
  • The Taskbar preview’s favicon appears blank
  • Call Imagelibs decodeImageAsyncWindows using a callback
  • Remove PermissionsService from the process Windows sandboxing code
  • The security info dialog doesn’t show the cert status anymore
  • Replace nsIPlatfromCharset in mailnews
  • Replace use of nsMsgI18NFileSystemCharset() with NS_CopyUnicodeToNative/NS_CopyNativeToUnicode()
  • Cater for Outlook’s/Hotmail’s ‘Deleted’ folder
  • Make some filter methods scriptable
  • Fix crash in nsMsgFilterAfterTheFact::ApplyFilter() caused by async reset of ‘m_curFolder’
  • Localize messages from nsIMsgFolder.logRuleHitFail()
  • Add logging of message filter runs and action
  • Check that we got a non-null header before running a filter on it (and crashing)
  • With CONDSTORE, eliminate unneeded flag fetches at the startup
  • Fix so custom tags (keywords) are visible to all users
  • Improve handling of tags on shared folders
  • Allow setting/resetting junk marking by user for yahoo/aol to stick
  • Don’t check the subject if the spellchecker is not ready
  • Grammar issues in mailnews_account_settings.XHTML
  • Remove the use of nsIMemory
  • Replace obsolete GetStringBundleService call in SeaMonkey
  • SeaMonkey crashes on MacOS Ventura 13.0
  • Continue the switch from Python 2 to Python 3 in the build system.
  • Added support for clang 15 and macOS SDK 11.3.
  • Verified compatibility with Rust 1.65.

System Requirements:

Windows Operating Systems

  • Windows 7
  • Windows 8
  • Windows 8.1
  • Windows 10
  • Windows 11

Minimum Hardware

Windows wants a CPU supporting the SSE2 instruction set.

  • Pentium 4 1.5GHz (Recommended: Intel Core 2 Duo 1.8GHz or higher)
  • 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 notice that Linux distributors might provide packages on your distribution with different requirements.

  • The following library versions (or suitable) 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 higher)
  • 1 GB RAM
  • 500 MB of free hard drive space

Size: 38.5 MB

DOWNLOAD Version 2.53.15 for Windows 32-bit [exe]

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DOWNLOAD Portable Edition

DOWNLOAD Version 2.53.15 for Linux x86

DOWNLOAD Version 2.53.15 for Linux x64

DOWNLOAD Version 2.53.15 for macOS

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