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A C++ Web Framework built on top of Qt, using the simple approach of Catalyst (Perl) framework.
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Cutelyst - The Qt Web Framework Cutelyst logo

Build Status Windows Build status Codacy Badge Code Quality: Cpp Total Alerts

A Web Framework built on top of Qt, using the simple and elegant approach of Catalyst (Perl) framework.

Qt's meta object system is what powers the core of Cutelyst, it allows for introspecting controller's methods signatures and generate matching actions that can be invoked later.


Don't trust us on being fast, check out the most comprehensive web framework benchmarks by TechEmpower


  • Cross-platform
  • Stable API/ABI - v1 on v1.x.x branch and v2 on tagged from master
  • Pluggable Engines
    • Cutelyst-WSGI - A cross-platform and fast WSGI engine
      • HTTP/1.1 - Pipelining and Keep-Alive
      • HTTP/2 - Upgrade to H2, ALPN negotiation on HTTPS and direct H2C
      • FastCGI - Pipelining and Keep-Alive
    • uWSGI - Multiple protocols support (HTTP 1.0, FastCGI, uWSGI)
  • WebSockets
  • REST with ActionREST
  • Plugin based views
  • Dispatcher
    • Chained
    • Path
  • Plugins
    • Session
    • Authentication (with PBKDF2)
    • Authorization with RoleACL
    • StatusMessage
    • Validator (to validate user input)
    • CSRF protection
    • Memcached
    • UserAgent
  • Upload parser
  • JSON body as QJsonDocument when uploaded data is in JSON format
  • C++11
  • Chunked reponses (via QIODevice write API)
  • Request profiling/stats
  • Asynchronous processing (just don't use local QEventLoops or it will eventually crash)
  • Unit tested
  • QtCreator integration


Get started with our Tutorial or check the API.


The Cutelyst project IRC channel is #cutelyst on freenode.

Or you can use the Mailing List


  • CMake - for the build system (>= 3.1)
  • Qt - the core library of this framework (>= 5.6)


  • uWSGI - to receive and parse protocols requests (>= 1.9 recommended)


The library is under the LGPLv2+ and public header files, documentation and examples are under MIT license.

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