ISAPI SCGI extension

Windows This is a Community Contributed Download

CategoryHandle Requests, Improve Performance
Supported by N/A
Works WithIIS 6, IIS 7, IIS 7.5, IIS 8, IIS 8.5
DocumentationISAPI SCGI extension Documentation
Updated onDecember 27, 2014
Uploaded byapn


The ISAPI SCGI extension adds support for the Simple Common Gateway Interface protocol to IIS. SCGI is a standard for communicating between web servers and application servers on the back end offering similar benefits to FastCGI but significantly simpler.


  • Supports Microsoft IIS versions 6, 7 and 8.
  • Can optionally start the SCGI application server automatically
  • Ability to control parameters like number of threads, outstanding IOCP requests etc. for tuning to your particular environment.
  • Implemented as an ISAPI C extension and uses I/O completion ports for minimal memory and CPU usage
  • Supports non-parsed headers
  • No other dependencies.
  • Open source with a liberal BSD license that allows free use even in commercial environments.


Provides ability to use any back-end applications and web frameworks that support SCGI.


No other dependencies.