aoj-server

Argentum Online Server (Java implementation)

ng-elements-demo

angular elements (web components) demo 2019

java-recaptcha

Google's reCAPTCHA for Java (very simple servlet example)

gdxTutorial3D

examples based on libGDX 3D tutorial from @xoppa https://xoppa.github.io/blog/basic-3d-using-libgdx/