AOLserver is a multithreaded, Tcl-enabled dynamic Web server useful for large scale, dynamic Web sites. AOLserver supports a long list of features and is used for many large scale, dynamic Web sites at AOL such as Digital City and AOL.COM. Some of its key features include: High Performance, Tcl Scripting, Complete C API, SQL Database Services, Secure Sockets Layer, and Hierarchical Access Control.