Responder: Alacris OCSP Responder
URL: ocsptest.alacris.com
(http://ocsptest.alacris.com:3080/ocsp)
PATH: ocsp
PORT: 3080

Responder:Certum OCSP Responder
URL: http://ocsp.certum.pl

Responder: DigSigTrust OCSP Responder
URL: http://ocsp.digsigtrust.com

Responder: Openvalidation.org Responder
URL: http://ocsp.openvalidation.org