Audience

Advanced Internet users, developers, and professionals seeking an open-source, all-in-one suite for browsing, email, web development, and online communication

About SeaMonkey

SeaMonkey is an all-in-one Internet application suite that combines a web browser, email and newsgroup client, feed reader, IRC chat, and HTML editor into one powerful platform. Developed by the SeaMonkey community, it continues the legacy of the classic Netscape and Mozilla suites with a modern, open-source foundation. Built using the Mozilla Firefox and Thunderbird codebase, SeaMonkey offers a familiar and reliable browsing and communication experience. Users benefit from advanced features like tabbed browsing, smart location bar, adaptive junk filtering, and multi-account support. Its integrated design caters to web developers, advanced users, and corporate professionals who value functionality and control. With ongoing updates and strong community backing, SeaMonkey delivers everything you need for the Internet—right in one place.

Other Popular Alternatives & Related Software
Apache NetBeans
Apache NetBeans
(4 Ratings)
Apache NetBeans is a versatile, open-source Integrated Development Environment (IDE) used for developing applications across a wide range of programming languages, including Java, JavaScript, PHP, HTML5, and C/C++. Known for its modular architecture, NetBeans provides robust tools and features that cater to the needs of developers working on desktop, mobile, and web applications. It includes intelligent code editing, debugging, and profiling capabilities, along with a built-in visual GUI builder for designing Java-based user interfaces. NetBeans also offers support for version control systems like Git, SVN, and Mercurial, facilitating seamless team collaboration. As an Apache Software Foundation project, NetBeans benefits from an active community that continuously improves and expands its functionality, making it a reliable and flexible choice for developers across various domains.
Learn more
BlueGriffon
BlueGriffon
(2 Ratings)
The next-gen Web and EPUB Editor based on the rendering engine of Firefox. BlueGriffon® has a long list of famous ancestors and proudly inherits from all of them: Netscape®, Mozilla® Composer and Nvu. It is powered by Gecko, the same rendering engine you can find at the heart of Firefox®, and is filled with tons of powerful features. BlueGriffon® is used by millions of users around the world, including Universities, Governments and even the European Parliament. It is officially recommended by the French Government as the Web Authoring Tool for the French Administration in its effort to rely on and promote Free Software. BlueGriffon® is used by millions of users around the world, including Universities, Governments and even the European Parliament. It is officially recommended by the French Government as the Web Authoring Tool for the French Administration in its effort to rely on and promote Free Software.
Learn more
Pulsar
Pulsar
A community-led hyper-hackable text editor. Pulsar works across operating systems. Use it on OS X, Windows, or Linux. Search and install new packages or create your own right from Pulsar. Pulsar helps you write code faster with a smart and flexible autocomplete. Easily browse and open a single file, a whole project, or multiple projects in one window. Split your Pulsar interface into multiple panes to compare and edit code across files. Find, preview, and replace text as you type in a file or across all your projects.
Learn more
Pale Moon
Pale Moon
(3 Ratings)
Pale Moon is an Open Source, Goanna-based web browser available for Microsoft Windows and Linux (with other operating systems in development), focusing on efficiency and customization. Make sure to get the most out of your browser! Pale Moon offers you a browsing experience in a browser completely built from its own, independently developed source that has been forked off from Firefox/Mozilla code a number of years ago, with carefully selected features and optimizations to improve the browser's stability and user experience, while offering full customization and a growing collection of extensions and themes to make the browser truly your own. This browser, even though fairly close to Gecko-based browsers like Mozilla Firefox and SeaMonkey in the way it works, is based on a different layout engine and offers a different set of features. It aims to provide close adherence to a balanced set of official, common-sense web standards and specifications in its implementation.
Learn more

Pricing

Starting Price:
Free
Pricing Details:
Open source
Free Version:
Free Version available.

Integrations

See Integrations

Ratings/Reviews - 2 User Reviews

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
support 4.5 / 5
More Reviews Write a Review

Company Information

SeaMonkey
United States
www.seamonkey-project.org

Videos and Screen Captures

SeaMonkey Screenshot 1
SeaMonkey Screenshot 1
You Might Also Like
La version gratuite d'Auth0 s'enrichit ! Icon
La version gratuite d'Auth0 s'enrichit !

Gratuit pour 25 000 utilisateurs avec intégration Okta illimitée : concentrez-vous sur le développement de vos applications.

Vous l'avez demandé, nous l'avons fait ! Les versions gratuite et payante d'Auth0 incluent des options qui vous permettent de développer, déployer et faire évoluer vos applications en toute sécurité. Utilisez Auth0 dès maintenant pour découvrir tous ses avantages.
Essayez Auth0 gratuitement

Product Details

Platforms Supported
Windows
Mac
Training
Documentation
Support
Online

SeaMonkey Frequently Asked Questions

Q: What kinds of users and organization types does SeaMonkey work with?
Q: What languages does SeaMonkey support in their product?
Q: What kind of support options does SeaMonkey offer?
Q: What other applications or services does SeaMonkey integrate with?
Q: What type of training does SeaMonkey provide?
Q: How much does SeaMonkey cost?

SeaMonkey Product Features

Code Editors

Keyboard Shortcuts
Customizable Themes
Multi-Monitor Editing
Syntax Highlighting
API
Code Folding
Column Editing
Formatting / Table Editing
Auto-Complete
Debugging
WYSIWYG

Email Management

Queue Manager
Signature Management
Response Management
Shared Inboxes
Whitelisting / Blacklisting
Email Archiving
Routing
Email Monitoring
Data Recovery
Spam Blocker

Text Editors

Syntax Highlighting
Formatting / Table Editing
Code Folding
WYSIWYG
Column Editing
Multi-Monitor Editing
Auto-Complete
Keyboard Shortcuts
Debugging
API
Customizable Themes

SeaMonkey Verified User Reviews

Write a Review
  • David E.
    User
    Used the software for: 2+ Years
    Frequency of Use: Monthly
    User Role: User, Administrator
    Company Size: 1 - 25
    Design
    Ease
    Features
    Pricing
    Support
    Probability You Would Recommend?
    1 2 3 4 5 6 7 8 9 10

    "I use SeaMonkey Composer. Over 20 years."

    Posted 2025-10-04

    Pros: I'm not an HTML / CSS/ ... person, but I have built and maintained my personal sailing / nerd web pages (40 different pages, and counting) for many years, using only SeaMonkey Composer. WYSIWYG make it super easy to use. And free. I don't use the other SeaMonkey tools, just the editor.
    It is the successor from Netscape, so lots of history.

    Cons: I'm sure there are better and more modern tools for making simple web pages, but none as easy and cheap as SeaMonkey. I can't make fancy, active web pages with it. I use external blogs for that, and just include links. Same with Youtube videos.

    Overall: Very good, over 20 years of regular use. Every year or so I look for a modern replacement, and don't find one that comes close.

    Read More...
  • A SeaMonkey Suite User
    Software Developer
    Used the software for: 2+ Years
    Frequency of Use: Daily
    User Role: User
    Company Size: 100 - 499
    Design
    Ease
    Features
    Pricing
    Support
    Probability You Would Recommend?
    1 2 3 4 5 6 7 8 9 10

    "Recommended All-in-One Internet Application Suite"

    Posted 2020-06-26

    Pros: Complete suite of applications for internet usage
    Free to use
    Lightweight feature rich browser based on Firefox
    Email & IRC Chat client
    Composer - powerful HTML editor
    Regular Updates
    Large number of add-ons, themes & extensions
    Great community support

    Cons: It is excellent - simple and powerful - for those who just want pure functionality. It is not widely popular due to its old look and no marketing.

    Overall: SeaMonkey is a free & simple application suite comprising of a browser, email client, IRC chat client, HTML Editor and web development tools. It is quite powerful tool-set and is free to use.

    Read More...
  • Previous
  • You're on page 1
  • Next