Serva is a tiny all in one portable multiple protocol portable web server application. Available in both 32 and 64 bit platforms, it boasts an HTTP server, DHCP server, proxyDHCP server, FTP server, TFTP server, TFTP client, DNS server, SNTP server, and SYSLOG server.
Lighty2Go is a free and portable (LIMP) LightTPD, MySQL, PHP Web server application for Windows. It can be used to host a website, or test PHP code and MySQL database structures.
EasyPHP is a WAMP (Windows, Apache, MySQL, PHP) portable web server that makes it easy to develop, test, and deploy web applications. This powerful tool can be used to create dynamic websites, manage databases, and perform other tasks related to web development.