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NaviServer, a high performance web server written in C and Tcl

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BSD Linux


NaviServer is an extensible web server suited to create scalable web sites and services. Originally based on AOLServer (, the ongoing development is now done independently under Mozilla Public License by a core group of people that use it for their businesses and by everyone who is willing to provide support of any kind.

Features: High performance multi-threaded architecture, massively scalable and extensible, many modules, interpreted config file, dynamic scripted pages (ADP), caching functions (static files, Tcl byte code, chunks), pooled database connections, thread shared arrays, introspection commands, mass virtual hosting (no server restart), watchdog restarts, control port and command mode, efficient handling of down-/uploads with async I/O, IPv4/IPv6

Core developers: Vlad Seryakov, Stephen Deasey, Zoran Vasiljevic, Gustaf Neumann

Source: Info:

NaviServer Web Site


  • multi-threaded architecture
  • massively scalable and extensible,
  • dynamic scripted pages
  • built-in caching support (byte-code, page-fragments, ..)
  • built-in database connection and thread pooling
  • thread shared arrays
  • watchdog restarts
  • built-in debugging (e.g. control port)
  • built-in statistics (for mutex, cache, handle, ... usage)
  • asynchronous spooling
  • IPv4 and IPv6


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Intended Audience


Programming Language

C, Tcl



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