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Wren:IG is a community‐developed reverse proxy server providing single sign-on (SSO) to any application behind the proxy.

Wren:IG includes a number of pre-built filters to transform data of intercepred requests / responses. Scripted filter allows you to easily create your own filter using the Groovy language.

The features of Wren:IG include:

  • Authentication / Authorization using industry-standard protocols (SAML 2.0, OAuth 2.0, OpenID Connect)
  • Single Sign-On (SSO)
  • Single Logout (SLO)
  • Session management
  • Password replay

Wren:IG is one of the projects in the Wren Security Suite, a community initiative that adopted open‐source projects formerly developed by ForgeRock.


Wren:IG is standing on the shoulders of giants and is a continuation of a prior work:

  • OpenIG by ForgeRock AS

We'd like to thank them for supporting the idea of open-source software.


Please note that the acknowledged parties are not affiliated with this project. Their trade names, product names and trademarks should not be used to refer to the Wren Security products, as it might be considered an unfair commercial practice.

Wren Security is open source and always will be.