Mozilla SeaMonkey 是一款開放原始碼及跨平台的網路套裝軟體，內含網頁瀏覽器、高階電子郵件和新聞群組 (newsgroup) 客戶端程式、IRC 網路聊天客戶端程式以及網頁編輯器；換言之，它包含了網路應用所需的所有必要軟體。
§ 作業系統：Windows 7/8/10/11
Mozilla SeaMonkey 原文簡介：
The program is an all-in-one Internet application suite. Web-browser, advanced e-mail and newsgroup client, IRC chat client, and HTML editing made simple — all your Internet needs in one application.
Plus all the features a modern browser should have including: Advanced security settings; Password, Download, and Cookie managers; Themes; multi-language and multi-platform support; and, the latest in Web Standards.
The SeaMonkey project is a community effort to deliver production-quality releases of code derived from the application formerly known as “Mozilla Application Suite”.