Conscrypt is a Java Security Provider
Mkpass - Command line Secure Password Generator
An Android library that prevents your app from being pirated
Java web common vulnerabilities and security code
Open source fork of the Google Authenticator Android app
Open source version of Google Authenticator (except the Android app)
Allow you to lookup IP address with geo-location information
Encrypt a text through a list of encryption methods
EaseFilter Comprehensive File Security SDK