Apache Maven core
Application Performance Monitoring System
Most popular Mocking framework for unit tests written in Java
Your Cheat Sheet For Android Interview
Lightweight dependency injection framework for Java 6 and above
Java bytecode to WebAssembly compiler
Lightweight HTTP framework built in Java
General purpose utilities and hash functions for Android and Java
Fast lightweight HTTP service framework
Atom/RSS/SearchSuggestion/OPML processing framework
A tiny IoC container refer to Spring