Roxen WebServer is a full-featured open-source web server distributed under the GPL license. It runs on a number of different operating systems including Windows, Linux, Solaris and Mac OS X.
Some of the strong points of this server is:
Open source code.
A web-based interface for easy configuration and administration.
The highly regarded Roxen graphics support which can be used for dynamic generation of e.g. headers, images and charts.
Integrated MySQL database.
Server-side programming via RXML, Java, Perl, PHP, CGI scripts and more.
Modular architecture where server extensions can be loaded without shutting down the server process.
Platform-independent architecture makes custom modules portable with no extra effort.