Notable DNSCurve users

The cr.yp.to site and all subdomains, such as NaCl, TweetNaCl, SafeCurves, etc. are all protected with DNSCurve.

The seznam.cz web crawler uses DNSCurve resolvers.

TinySSH runs DNSCurve nameservers and distributes code that benefits from DNSCurve. TinySSH can be run over TCP or CurveCP.

CURVEPROTECT protects DNS and other protocols with DNSCurve and CurveCP. It also supports DNSCurve on its own domain.