NaviServer


NaviServer is a high performance web server written in C and Tcl. It can be easily extended in either language to create web sites and services; there are over 35 modules available.
The project is under active development, hosted on SourceForge.
Licensed under the terms of the Mozilla Public License.
Recent new features include:
NaviServer is based on AOLserver, AOL's open-source web server. The NaviServer project started as a fork of the AOLserver project. It is different by supporting multiple protocols, providing higher scalability through asynchronous I/O and aims to be less conservative with new feature development.
Historically NaviServer was the original name of the server, a closed-source product by a company called NaviSoft in the early 1990s. It was bought by AOL in 1995, and released as open-source in 1999 as AOLserver after they released Mozilla. This friendly-fork takes the code back to its original name.