All your Internet needs in one free application

SeaMonkey (64-bit)

SeaMonkey (64-bit)

  -  45.91 MB  -  Open Source
  • Latest Version

    SeaMonkey 2.53.23 (64-bit) LATEST

  • Review by

    Juan Garcia

  • Operating System

    Windows 7 64 / Windows 8 64 / Windows 10 64 / Windows 11

  • User Rating

    Click to vote
  • Author / Product

    Mozilla Organization / External Link

  • Filename

    seamonkey-2.53.23.en-US.win64.installer.exe

  • MD5 Checksum

    58e5e0e970e5d7132106150f1340261d

SeaMonkey (64-bit) is an all-in-one internet suite that combines a web browser, email client, HTML editor, and IRC chat in a single package.

Developed by the SeaMonkey Council, it continues the legacy of the Mozilla Application Suite, offering a versatile and lightweight alternative to standalone applications.

This open-source software is designed for advanced users who prefer an integrated browsing experience with extensive customization options.

Features

Web Browser – Based on the Mozilla engine, SeaMonkey for Windows provides a fast and secure browsing experience with tabbed browsing, pop-up blocking, and session restore.

Email & Newsgroup Client – A robust email client with multiple account support, spam filters, and RSS feed integration.

HTML Editor – A built-in WYSIWYG HTML editor allows users to create and edit web pages easily.

IRC Chat – An integrated chat client that supports multiple chat networks.

Add-ons & Extensions – Supports legacy Firefox add-ons, enhancing functionality with additional tools and features.

Developer Tools – Includes an advanced DOM Inspector and JavaScript debugger for web development.

User Interface

It features a classic, straightforward interface reminiscent of older versions of Firefox and Netscape Navigator. The layout is user-friendly but may feel outdated compared to modern browsers.

The suite's components, including the browser, email client, and chat, are easily accessible via a top navigation menu, ensuring a seamless transition between tasks.

How to Use

Browsing – Open this app and type a URL in the address bar or use bookmarks for quick access.

Email Client – Add an email account, check messages, and manage multiple email inboxes from one interface.

Web Development – Open the Composer tool to create and edit web pages with an intuitive editor.

Chat – Join IRC chat rooms using the integrated chat client.

Customization – Install add-ons and themes to personalize your experience.

FAQ

Is SeaMonkey still being developed?
Yes, SeaMonkey is actively maintained by a dedicated community, though updates may not be as frequent as mainstream browsers.

Can I use Firefox extensions with SeaMonkey?
Some older Firefox extensions are compatible, but newer WebExtensions are not supported.

Does SeaMonkey support modern web standards?
It supports most modern web technologies, but its engine may lag behind mainstream browsers like Chrome and Firefox.

Is SeaMonkey safe to use?
Yes, but it relies on users to manually update it for the latest security patches.

Can I sync bookmarks and settings across devices?
The app does not have built-in sync capabilities like Firefox or Chrome, but users can manually import/export data.

Alternatives

Opera GX: The gaming browser built for gamers with RAM and CPU limiters!

Chrome: The fast, free browser that`s built for the modern web

Firefox: Fast and customizable browser with a strong focus on privacy and security.

Edge: A modern and efficient browser with excellent compatibility and integrated Microsoft services.

Brave: Privacy-focused browser that blocks ads and trackers by default, ensuring a faster and more secure browsing experience.

System Requirements
  • OS: Windows 7, 8, 10, 11 (64-bit)
  • Processor: Intel or AMD 64-bit processor
  • RAM: 2GB minimum, 4GB recommended
  • Storage: At least 200MB of free disk space
  • Internet: Required for updates and extensions
PROS
  • Lightweight and Fast Performance
  • Built-in Email & IRC Chat
  • Customizable with Add-ons
  • Integrated Web Development Tools
  • Low System Resource Usage
CONS
  • Outdated User Interface
  • Limited Modern Extension Support
  • Website Compatibility Issues
  • Small Developer Community
Conclusion

SeaMonkey (64-bit) is an excellent choice for users who prefer an all-in-one internet suite with a classic browsing experience. While it lacks some modern features and updates can be infrequent, it remains a solid option for those who value integration and customization.

Advanced users who need a lightweight, extensible, and multi-functional suite will appreciate what this app offers. However, for those looking for the latest web technologies, enhanced security, and faster performance, alternatives like Firefox or Chrome may be a better fit.

Also Available: SeaMonkey (32-bit) and SeaMonkey for Mac

Why is this app published on FileHorse? (More info)
  • SeaMonkey 2.53.23 (64-bit) Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

    SeaMonkey 2.53.23 (64-bit) Screenshot 1
  • SeaMonkey 2.53.23 (64-bit) Screenshot 2
  • SeaMonkey 2.53.23 (64-bit) Screenshot 3
  • SeaMonkey 2.53.23 (64-bit) Screenshot 4
  • SeaMonkey 2.53.23 (64-bit) Screenshot 5

What's new in this version:

SeaMonkey 2.53.23 contains (among other changes) the following changes relative to SeaMonkey 2.53.22:
- Use PluralForm for known networks in cZ
- Use PluralForm better for known networks in cZ
- Add ESR 140 links to debugQA
- Incorrect SeaMonkey version number in BugSplat crash reports
- Update service name in dataman.js

The following bugs were fixed in our branch of the Gecko source code only:
- Fixed CSS issue by landing part 1 of

SeaMonkey 2.53.23 contains (among other changes) the following major changes relative to SeaMonkey 2.49.5:
- The Bookmarks Manager has switched its name to Library, and now also includes the History list. When History is invoked, the Library will be shown with the History list selected. The extensive modifications were needed because of Mozilla Gecko platform API changes.
- Download Manager has been migrated to a new API. Although it looks pretty much the same as before, the search option is missing and some other minor details work differently. The previous downloads history is removed during the upgrade.
- The layout panel was added to the CSS Grid tools
- TLS 1.3 is the default SSL version now
- Support for all NPAPI plugins like Flash, Java and Silverlight has been removed. For displaying pdf files in the browser you can use pdf.js-seamonkey from Isaac Schemm.
- SeaMonkey now uses a new api for formatting regional data like time and date. Default is to use the application locale of the current SeaMonkey build. If you use a language pack or a different OS formatting this is usually not desired. You can change the formatting from the application locale to the regional settings locale (OS) in the preferences dialog under "Appearance".