PHP client library for reCAPTCHA, a free service
OpenID Connect Relying Party and OAuth 2.0 Resource Server
An implementation of the DNS protocol in Java
High performance .NET library for MQTT based communication
Authenticator via oauth2, direct, email and telegram
A high-level OpenPGP library
End-To-End is a crypto library to encrypt, decrypt, digital sign
The Essential StoreKit Companion