WildFly, formerly known as JBoss AS, is an application server developed by Red Hat. WildFly is written in Java, and implements the Java Platform, Enterprise Edition (Java EE) 7 specification. It runs on multiple platforms. WildFly is free and open-source software, subject to the requirements of the GNU Lesser General Public License (LGPL), version 2.1.
flexible, lightweight, managed application runtime that helps you build applications in java