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SeaMonkey Stable / 2.58 Alpha 1 by Mozilla

1 Star2 Stars3 Stars4 Stars5 Stars (12 votes, average: 4.08 out of 5)
SeaMonkey Stable / 2.58 Alpha 1 by Mozilla

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

  • Fix the lazy loading of images from some websites
  • Move certain font family defaults from serif to sans serif

What’s New in SeaMonkey 2.53.9:

  • There is now an option to clear browser history during shutdown bug 1621445.
  • Uninstall plugin command for ChatZilla bug 541719.
  • Update icons used in ChatZilla status bar bug 1710238 and bug 1710249.
  • Make ChatZilla understand mIRC color code 99 bug 1710298.
  • Implement IRCv3 basic CAP negotiation bug 1717539 and CAP LIST and update CAP ACK and CAP LS bug 1710313.
  • Use Unicode instead of images for emojis in ChatZilla bug 1711375 and add some extra emojis bug 1711376.
  • Use SeaMonkey’s configured web search rather than a separate one in ChatZilla bug 1712498.
  • Add a networks editor to ChatZilla bug 1716232.
  • Implement IRCv3 away-notify bug 1717543, chghost and userhost-in-names bug 1717544, self-messaging bug 1722212 and WHOX bug 1722214.
  • Link to SeaMonkey website in debugQA for verification sites and development section bug 1685606.
  • Send button should be disable until we have a recipient bug 104973.
  • Remove need to use a modifier for marking messages as unread bug 1719216.

What’s New in SeaMonkey

  • Archive message action does not work
  • Do not preserve offlineMsgSize parameter when moving/copying emails between folders
  • Move thread code to threadPane.js and remove messengerdnd.js

What’s New in SeaMonkey 2.53.8:

  • Serious performance improvements and bug fixes
  • Language attributes with country codes not recognized when building the Website Navigation Bar link toolbar
  • Optimize SeaMonkey icons for speed and optional higher quality for branding
  • Support from= option when opening email compose window from the command line
  • Update subject handling and GenericSendMessage function in compose window
  • All message windows should update when view preferences are changed
  • Improve marking of multiple messages as read / unread
  • Show version numbers again in the add-on manager by the partial backout of bug
  • Update available networks in chatZilla
  • Change default port for IRC via TLS/SSL to 669
  • Remove chatZilla and Lightning extension language packs and incorpate localisations within the main language pac
  • Fix address drag and drop handling in compose windo
  • Further fixes for legacy generators and the deprecated for each statement in add-ons and the Add-on SDK
  • For developers, fork DOMi repo into main SeaMonkey one which means no need to separately checkout the extension

What’s New in SeaMonkey

  • Fix for legacy generators and the deprecated for each statement in add-ons and the Add-on SDK
  • Fix for handling of dead keys in text input fields in GTK 3.24.26+

What’s New in SeaMonkey 2.53.7:

  • Remove Flash and NPAPI support
  • Switch packaged extensions to be global
  • Add Insert Forms to Composer
  • Fix an issue with copying to IMAP sent folder and some reference count leaks in mailnews
  • Tailing to delay tracker requests and enhance performance has been enabled
  • Various security and general platform fixes.
  • The ChatZilla source has been integrated into SeaMonkey and no longer needs to be checked out separately if you build your own release

What’s New in SeaMonkey 2.53.6:

  • Improve usability of multiple mailboxes/folders selection
  • Add Greek localisation (el).
  • Remove more RDF from mailnews code.
  • Switch to mozilla as topsrcdir and component for building is comm/suite now.
  • Rust support is now up to 1.48 and official build is now using 1.47.0
  • Various security and general platform fixes.

Homepage –

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

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2 Comments on SeaMonkey Stable / 2.58 Alpha 1 by Mozilla

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    That's why I use Firefox AND Thunderbird.  Great combination with everything I need. 

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    you cant use multizilla or googlebox with this version nor some of the seamonkey to miss...