Tomcat是由Apache软件基金会下属的Jakarta项目开发的一个Servlet容器，按照Sun Microsystems提供的技术规范，实现了对Servlet和JavaServer Page（JSP）的支持，并提供了作为 Web服务器的一些特有功能，如Tomcat管理和控制平台、安全域管理和Tomcat阀等。
由于Tomcat本身也内含了一个 HTTP服务器，它也可以被视作一个单独的Web服务器。但是，不能将 Tomcat 和 Apache Web 服务器混淆，Apache Web Server 是一个用 C 语言实现的 HTTP web server；这两个 HTTP web server 不是捆绑在一起的。Apache Tomcat 包含了一个配置管理工具，也可以通过编辑 XML 格式的配置文件来进行配置。
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Apache HTTP Server 2.2.17 版本发布，最流行的HTTP服务器软件之一。快速、可靠、可通过简单的API扩展，Perl/Python解释器可被编译到服务器中，完全免费，完全源代码开放。 如果你需要创建一个每天有数百万人访问的Web服务器，Apache可能是最佳选择。
Changes with Apache 2.4.27
*) COMPATIBILITY: mod_lua: Remove the undocumented exported ‘apr_table’
global variable when using Lua 5.2 or later. This was exported as a side effect from luaL_register, which is no longer supported as of Lua 5.2 which deprecates pollution of the global namespace.
*) COMPATIBILITY: mod_http2: Disable and give warning when using Prefork.
The server will continue to run, but HTTP/2 will no longer be negotiated.
*) COMPATIBILITY: mod_proxy_fcgi: Revert to 2.4.20 FCGI behavior for the default ProxyFCGIBackendType, fixing a regression with PHP-FPM. PR 61202.
*) mod_lua: Improve compatibility with Lua 5.1, 5.2 and 5.3.
PR58188, PR60831, PR61245.
*) mod_http2: Simplify ready queue, less memory and better performance. Update
mod_http2 version to 1.10.7.
*) Allow single-char field names inadvertently disallowed in 2.4.25.
PR 61220.
*) htpasswd / htdigest: Do not apply the strict permissions of the temporary
passwd file to a possibly existing passwd file. PR 61240.
*) core: Avoid duplicate HEAD in Allow header.
This is a regression in 2.4.24 (unreleased), 2.4.25 and 2.4.26.
PR 61207.
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Apache OpenOffice is the leading open-source office software suite for word processing, spreadsheets, presentations, graphics, databases and more. It is available in many languages and works on all common computers. It stores all your data in an international open standard format and can also read and write files from other common office software packages. It can be downloaded and used completely free of charge for any purpose.
Great software
Apache OpenOffice is the result of over twenty years’ software engineering. Designed from the start as a single piece of software, it has a consistency other products cannot match. A completely open development process means that anyone can report bugs, request new features, or enhance the software. The result: Apache OpenOffice does everything you want your office software to do, the way you want it to.
Easy to use
Apache OpenOffice is easy to learn, and if you’re already using another office software package, you’ll take to OpenOffice straight away. Our world-wide native-language community means that OpenOffice is probably available and supported in your own language. And if you already have files from another office package – OpenOffice will probably read them with no difficulty.
And it’s free
Best of all, Apache OpenOffice can be downloaded and used entirely free of any licence fees. Apache OpenOffice is released under the Apache 2.0 Licence. This means you may use it for any purpose – domestic, commercial, educational, public administration. You may install it on as many computers as you like. You may make copies and give them away to family, friends, students, employees – anyone you like.
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许多人通过他们自己的经验认识到安装Apache服务器是件不容易的事儿。如果您想添加 MySQL、PHP 和 Perl，那就更难了。XAMPP是一个易于安装且包含MySQL、PHP和Perl的Apache发行版。XAMPP的确非常容易安装和使用：只需下载，解压缩，启动即可。到目前为止，XAMPP共支持Windows 、Linux、Mac OS X、Solaris四种版本。
XAMPP 是免费的
我们不喜欢定价过高的商业软件，所以我们尝试以 XAMPP 来证明免费软件也能有好的表现。
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PHPnow 是 Win32 下绿色的 Apache + PHP + MySQL 环境套件包。简易安装、快速搭建支持虚拟主机的 PHP 环境。附带 PnCp.cmd 控制面板，帮助你快速配置你的套件，使用非常方便。
安装 PHPnow 只需解压、初始化，就可得到一个标准的 PHP + MySQL 的服务器环境。然后就可以直接安装 Discuz! 等程序，或者进行 PHP 开发调试。
国内的专业PHP集成环境，在中国农历新年即将到来时候发布，一个更新。这的确让人激动。希望这个让初学者上手的套件环境不要离我们远去。
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