Wikipedia
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 (MPL).
Recent new features include:
- an internal watchdog for automatic server restarts
- server internals exposed in a command line mode
- selective logging with color highlighting
- efficient built-in crypo support
- mass virtual hosting
- uses optionally the Tcl virtual filesystem (for optional single-file Starkit deployment)
- byte-range requests for streaming and resumption of downloads
- WebSocket and IPv6 support