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Lasso - Liberty Alliance Single Sign-On

Lasso is a free software C library implementing the Liberty Alliance and SAML standards (ID-FF, SAMLv2, ID-WSF); it defines processes for federated identities, single sign-on and related protocols, and is used to bring digital identity features to web sites and applications. Lasso passed both ID-FF 1.2 and SAMLv2 Liberty interoperability tests.

Lasso comes with native language support for Java, Perl, Python and PHP. Focus Areas: BPEL | DITA | ebXML | IDtrust | OpenDocument | SAML | UBL | UDDI
OASIS sites: OASIS | Cover Pages | | AMQP | CGM Open | eGov | Emergency | IDtrust | LegalXML | Open CSA | OSLC | WS-I