The CILogon project facilitates secure access to CyberInfrastructure (CI).

To log on to the CILogon Service, visit

Services that support access via CILogon include:

CILogon is a research and scholarship service provider in the InCommon federation.

CILogon is an open source project, with source code and downloads hosted at SourceForge and GitHub.

Interested in the CILogon 2.0 platform? Please submit our CILogon 2.0 Inquiry form, and we'll contact you right away!

To cite CILogon in publications, please use:

Jim Basney, Terry Fleury, and Jeff Gaynor, "CILogon: A Federated X.509 Certification Authority for CyberInfrastructure Logon," Concurrency and Computation: Practice and Experience, Volume 26, Issue 13, pages 2225-2239, September 2014.

For more information, please see our Frequently Asked Questions or contact

Latest News

  • CILogon 2.0 CINC UP Webinar - Fri Jun 16 12pm ET Please join us for a presentation about the CILogon 2.0 service on the Internet2 Collaborative Innovation Community CINC UP webinar on Friday, June 16 at 12pm ET. If you ...
    Posted Jun 15, 2017, 6:56 AM by Jim Basney
  • Log On with ORCID Today we added ORCID to the list of identity providers at ORCID is an independent non-profit effort to provide an open registry of unique researcher identifiers ...
    Posted Jun 12, 2017, 9:41 AM by Jim Basney
  • CILogon Supports Sirtfi CILogon now officially supports the Security Incident Response Trust Framework for Federated Identity (Sirtfi). As part of InCommon's Sirtfi Proof of Concept (see: FAQ), InCommon tagged CILogon as Sirtfi ...
    Posted Apr 17, 2017, 1:35 PM by Jim Basney
Showing posts 1 - 3 of 89. View more »

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This material is based upon work supported by the National Science Foundation under grant numbers 0850557, 0943633, 1053575, 1440609, 1547268, and 1548562 and by the Department of Energy under award number DE-SC0008597.
Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the United States Government or any agency thereof.
The CILogon project is sometimes referred to as CILogin, but the official name is CILogon.