The SpotBugs plugin for security audits of Java web applications
Authentication and access-control framework
Identity & Single Sign On for all earthlings and beyond
Open source alternative to Auth0 / Firebase Auth, etc.
Conscrypt is a Java Security Provider
A simple and efficient security framework
Firing Range is a test bed for web application security scanners
An authentication plugin for Play Framework 2.x (Java)
Open source to productivity
Java code for brute forcing keystore certificates