SeaMonkey Alternatives

SeaMonkey is described as 'Web-browser, advanced e-mail, newsgroup and feed client, IRC chat, and HTML editing in one application. Itis built on the open source Mozilla Gecko engine, the same code which underlies Thunderbird and is the base for the Firefox browser' and is a very popular Web Browser in the web browsers category. There are more than 100 alternatives to SeaMonkey for a variety of platforms, including Windows, Mac, Linux, Android and Android Tablet apps. The best SeaMonkey alternative is Mozilla Firefox, which is both free and Open Source. Other great apps like SeaMonkey are Thunderbird, Brave, Zen Browser and Google Chrome.

SeaMonkey iconSeaMonkey
  235
  • ...

Web-browser, advanced e-mail, newsgroup and feed client, IRC chat, and HTML editing in one application. Itis built on the...

More about SeaMonkey
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SeaMonkey alternatives page was last updated Mar 3, 2025
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  1. Pidgin icon

    Pidgin

     1522 likes
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    Pidgin is a chat program which lets you log into accounts on multiple chat networks simultaneously. This means that you can be chatting with friends on XMPP and sitting in an IRC channel at the same time.

    122 Pidgin alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Flathub
    • PortableApps.com
    Pidgin screenshot 1

    Top Pidgin Features

    1.  Support for Multiple protocols
    2.  Extensible by Plugins/Extensions
    3.  Supports XMPP
    4.  Multiple Account support
    5.  IRC
    6.  Portable
    7.  No Tracking
    8.  Ad-free
    9.  VoiP Calls
    10.  Multiple languages
    11.  Xmpp
    12.  Multiple chat protocols

    Pidgin VS SeaMonkey

     
  2. Floorp icon

    Floorp

     94 likes
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    The Floorp project is a project that seeks privacy and a balance between anonymity and the public nature of the web.

    121 Floorp alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • JP flagJapan

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    • Flatpak
    Floorp screenshot 1

    Properties

    1.  Customizable
    2.  Privacy focused
    3.  Support for Themes
    4.  Lightweight

    Features

    1.  Firefox-based Browsers
    2.  Sidebar
    3.  Extensible by Plugins/Extensions
    4.  No Tracking
    5.  Dark Mode
    6.  Block Trackers
    7.  Ad-free
    8.  Synchronization
    9.  Based on Gecko engine
    10.  Support for Gestures
    11.  No registration required
    12.  Cloud Sync

    Floorp VS SeaMonkey

     
  4. Waterfox icon

    Waterfox

     385 likes
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    Utilize Waterfox for a high-speed, private browsing experience on 64-bit systems. Built on Firefox, it taps into Intel's C++ compiler for optimal performance, supports legacy extensions, allows full customization, and blocks ads by default, ensuring utmost control and security.

    57 Waterfox alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • GB flagUnited Kingdom

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • Android Tablet
    Regular Window

    Properties

    1.  Privacy focused
    2.  Customizable
    3.  Lightweight
    4.  Support for Themes

    Features

    1.  Firefox-based Browsers
    2.  Support for 64 bit
    3.  Optimized Firefox
    4.  Privacy enhanced
    5.  Support for Firefox extensions
    6.  Extensible by Plugins/Extensions
    7.  Legacy addons support
    8.  Classic extension support
    9.  No Tracking
    10.  Optimized for Windows
    11.  Cloud Sync
    12.  Block Trackers

    Waterfox VS SeaMonkey

     
  5. Ad
    Screenshot
    Ghost Browser icon
    Ghost Browser

    Chromium web browser with multi-session browsing, workspace creation, advanced tab management, and Web3 integration. Ideal for developers, marketers, privacy-conscious users, social media managers, customer support specialists, Q...

    https://ghostbrowser.com
    Learn More
  6. Microsoft Edge icon

    Microsoft Edge

     318 likes
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    Microsoft's Chromium based browser, rebuilt for performance, compatibility and security.

    208 Microsoft Edge alternatives

    License model

    • Free • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Flathub
    Microsoft Edge screenshot 1

    Top Microsoft Edge Features

    1.  Chromium-based Browsers
    2.  Cloud Sync
    3.  Collections
    4.  PDF annotation
    5.  Integrated PDF Viewer
    6.  Add-ons
    7.  Bookmarks
    8.  Casting to TV
    9.  Reading mode
    10.  MultiTouch
    11.  Website Translation
    12.  Annotate Screenshot

    Microsoft Edge VS SeaMonkey

     
  7. Pale Moon icon

    Pale Moon

     394 likes
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    This open-source Goanna-based browser for Windows, Linux, Mac, and FreeBSD offers customization, security, and privacy. Forked from Firefox, it's optimized for modern processors, ad-free, and supports unique extensions, community-backed. Comes with a functional status bar, supports NPAPI plugins.

    179 Pale Moon alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • NL flagNetherlands
    • European Union flagEU

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    Pale Moon screenshot 1

    Properties

    1.  Lightweight
    2.  Customizable
    3.  Optimal performance
    4.  Privacy focused
    5.  Security-focused
    6.  Support for Themes

    Features

    1.  Based on Goanna engine
    2.  Support for Firefox extensions
    3.  Firefox-based Browsers
    4.  Built-in RSS reader
    5.  Legacy addons support
    6.  Ad-free
    7.  No Tracking
    8.  User Custom Toolbar
    9.  Extensible by Plugins/Extensions
    10.  Dark Mode
    11.  Optimized for Windows
    12.  Optimized Firefox

    Pale Moon VS SeaMonkey

     
  8. IronFox icon

    IronFox

     28 likes
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    IronFox is a fork of DivestOS's Mull Browser based on Firefox. Our goal is to continue the legacy of Mull to provide a secure, hardened and privacy-oriented browser for daily use.

    53 IronFox alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • International

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    IronFox screenshot 1
    IronFox screenshot 2
    IronFox screenshot 3

    Properties

    1.  Privacy focused
    2.  Lightweight
    3.  Support for Themes

    Features

    1.  Extensible by Plugins/Extensions
    2.  Firefox-based Browsers
    3.  Ad-free
    4.  Cloud Sync
    5.  No Tracking
    6.  Block Trackers
    7.  Dark Mode
    8.  Picture in Picture
    9.  Integrated Password Manager
    10.  Website Translation
    11.  No registration required

    IronFox VS SeaMonkey

     
  10. Fennec F-Droid icon

    Fennec F-Droid

     89 likes
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    Browser using the Gecko layout engine to render web pages, which implements current and anticipated web standards.

    191 Fennec F-Droid alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • International

    Platforms

    • Android
    • F-Droid
    Start page
    Fennec F-Droid screenshot 2
    Extension support

    Properties

    1.  Privacy focused
    2.  Lightweight

    Features

    1.  Based on Gecko engine
    2.  Tracker-free
    3.  Extensible by Plugins/Extensions
    4.  Ad-free
    5.  Dark Mode
    6.  Block Trackers
    7.  No Tracking
    8.  Firefox-based Browsers
    9.  No registration required
    10.  Integrated Password Manager
    11.  Cloud Sync
    12.  Picture in Picture

    Fennec F-Droid VS SeaMonkey

     
  11. Firefox Developer Edition icon

    Firefox Developer Edition

     234 likes
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    Firefox Developer Edition brings you latest features, fast performance, and the development tools you need to build for the open web. Its powerful development tools will extend your ability to work across multiple platforms from one place.

    173 Firefox Developer Edition alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • PortableApps.com
    Firefox Developer Edition screenshot 1

    Properties

    1.  Privacy focused
    2.  Lightweight

    Features

    1.  Firefox-based Browsers
    2.  Ad-free
    3.  Portable
    4.  Extensible by Plugins/Extensions
    5.  Dark Mode
    6.  Cloud Sync
    7.  Works Offline
    8.  No registration required
    9.  Block Trackers
    10.  No Tracking

    Firefox Developer Edition VS SeaMonkey

     
  12. Betterbird icon

    Betterbird

     51 likes
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    Betterbird, a soft fork of Mozilla Thunderbird, improves user experience with advanced features, bug fixes, security patches, and multi-row descriptions similar to Outlook. Compatible with multiple platforms and can be used alongside Thunderbird, sharing the same profile.

    27 Betterbird alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    • Chocolatey
    Betterbird screenshot 1

    Properties

    1.  Privacy focused
    2.  Support for Themes
    3.  Lightweight

    Features

    1.  Multiple Account support
    2.  Extensible by Plugins/Extensions
    3.  Works Offline
    4.  Unified inbox
    5.  Ad-free
    6.  Portable
    7.  No Tracking
    8.  Spam Filter
    9.  Calendar Integration
    10.  SMTP Support
    11.  IMAP Support
    12.  POP3 Support

    Betterbird VS SeaMonkey

     
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