EasyPHP – Really nice Apache install with PHP and mySQL included and configured. If you need a heavy duty Apache web development environment look at Apache2Triad.
FileZilla – FTP Server and client. Highly recommended.
Instantrails – Instant Rails is a one-stop Rails runtime solution containing Ruby, Rails, Apache, and MySQL, all preconfigured and ready to run. No installer, you simply drop it into the directory of your choice and run it.
Uniformserver – The Uniform Server is a WAMP package that allows you to run a server on any MS Windows OS based computer. It is small and mobile to download or move around and can also be used or setup as a production/live server. Developers also use The Uniform Server to test their applications made with either PHP, MySQL, Perl, or the Apache HTTPd Server.
MoWES -Run a webserver based on Apache, MySQL and PHP from an USB Stick or any other writable media (harddrive, flash cards etc.) without installation under Windows (98 to Vista).
Web-Dev. Server Suite – WAMP-based [Windows, Apache, MySQL, PHP] web-server distribution for Windows that is fully configured and ready to run. This has every thing from a Web Application firewall to ASP.NET Host Interface. Security hardened and even includes some open source CMS software, like Joomla.
XAMPP – Apache, MySQL, PHP web development environment install. Takes care of most configs and setup issues so you don’t have to.
EFTP – FTP client/server
WAMP – Apache, PHP5 and MySQL server
Apache Tomcat – Apache Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages (jsp) technologies.
Apache Web Server – Web Server, the best one around.
Apache2Triad – Installs a developer preconfigured environment with Apache, PHP, mySQL with control panel/PHPMyAdmin, xMail, ftp, and a Apache Web based Control Panel, etc. Power packed with new cool things like Python/Pearl mods, ASP support, SSL and so much more. Highly recommended.