WildFly 8 is a Java EE 7 certified application server.
WildFly is the new name for the open source JBoss Application Server. WildFly 8 is the first release under the WildFly name and so is the direct successor to JBoss AS 7.
WildFly continues to be the upstream project for the JBoss Enterprise Application Platform (EAP) and makes source code available on GitHub.