SeaMonkey是一个免费和开源的互联网套件，包括网络浏览器、电子邮件客户端和其他与网络相关的工具。

SeaMonkey由SeaMonkey Council开发，基于与Firefox网页浏览器和Thunderbird电子邮件客户端相同的技术。其功能包括标签式浏览、自定义界面、支持HTML5和CSS3，以及一个IRC聊天客户端。

使用SeaMonkey的好处之一是它在一个软件包中提供了一整套与网页相关的工具，对于想要使用多个应用程序而不必单独安装的用户来说，这非常有用。它还允许通过插件和主题轻松自定义和扩展。

SeaMonkey的一些功能包括标签浏览、自定义工具栏和内置弹出窗口拦截。它还具有密码管理器、下载管理器，并支持多种语言。SeaMonkey还支持HTML5、CSS3和其他现代网页技术。

总的来说，SeaMonkey 是一款多功能的互联网套件，适合个人和专业使用。

主要功能：

• 网页浏览：SeaMonkey 包括一个快速、安全且可定制的网页浏览器，支持标签页浏览和弹出窗口阻挡。
• 电子邮件：它具有功能齐全的电子邮件客户端，提供高级过滤、信息搜索和信息分组。
• 新闻组：SeaMonkey带有一个新闻组客户端，允许用户访问讨论论坛并阅读消息。
• 聊天：它还有一个 IRC 聊天客户端，允许用户连接到聊天室并与其他用户交流。
• Composer: SeaMonkey 包含一个所见即所得的 HTML 编辑器，使用户能够创建和编辑网页。
• 附加组件：它支持广泛的附加组件和扩展，可以增强其功能并自定义用户体验。
• 跨平台：SeaMonkey 可用于 Windows、Mac 和 Linux 操作系统，使其对广泛的用户群体可访问。

• URLs that are too long to be shown completely appear in a tooltip now when hovering the location bar.
• Coloring of the location bar for HTTPS URLs can be disabled through Preferences now.
• Certain search engines can be discovered automatically now.
• The status bar padlock icon features a context menu now.
• You can now insert formulas in Composer using a dialog (LaTeX to MathML).
• Feed items can be tagged automatically according to feed category tags now.
• Searching within a message compose window will now display the find toolbar.
• The account name is now shown in the status bar when downloading messages from POP servers.
• Localizability of custom reply headers has been improved (mailnews.reply_header_* preferences).
• Contact autocompletion in message composition windows now searches for all terms separately (AND search).
• You can now search for contacts containing parentheses.

• HTTP caching (v2) has been enabled.
• Generational garbage collection has been integrated.
• Public key pinning support has been enabled.
• The number of found items is now displayed in the find toolbar.
• The trust bit for some 1024-bit root certificates has been removed / turned off.
• Support for the Prefer:Safe HTTP header for parental control has been added.
• mozilla::pkix has been added as default certificate verifier.
• The CAPS infrastructure for specifying site-specific permissions (via capability.policy.* preferences) has been removed.
• WebVTT has been implemented.
• CSS3 variables have been implemented.
• CSP 1.1 nonce-source and hash-source have been enabled.
• With the exception of those bundled inside an extension or ones that are whitelisted, plugins are no longer activated by default.
• Added support for GStreamer 1.0 (see bug 806917 for build configuration).
• Disabled insecure NTLM (pre-NTLMv2) authentication (see bug 828183).
• Passwords can now be saved via the password manager even when autocomplete="off" was used to prevent it (see bug 956906).
• Also see Firefox 32 for Developers, Firefox 31 for Developers and Firefox 30 for Developers.
• Fixed several stability issues.