Hello @S Alexandre Lemaire
As of today (Crowd v3.2.3), Crowd only supports SAML for Google Apps integration, in which case it actually acts as an IdP. However Crowd's development team recently announced that they are planning to deliver general SAML support in Crowd in the near future. No release date so far but they are definitely working on it.
Well yes, sort of. Atlassian released Crowd SSO 2.0 in Crowd 3.4 (Data Center only). This is basically SAML authentication for Atlassian products (e.g. Jira, Confluence), the Crowd server acting as a SAML Identity Provider.
However general SAML support, which means Crowd acting as a standard SAML IdP for any application (not just Atlassian's) with any kind of specific configuration has not been delivered yet. I suggest that you start watching CWD-1822 for updates on this.
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