Capturing JVM and application-level metrics
Dynamic Speedometer and Gauge for Android. amazing, powerful
A library for fully animated Material Design components
LCARS widget toolkit for the Java platform
Bootstrap style widgets for Android, with Glyph Icons
Provides various "Material Design"-styled preferences
Phoenix Pull-to-Refresh
A fully customizable datepicker for your Swing application!
GWT library that encapsulates the browser's file upload capabilities.