forage
· Search engine built on top of lucene, which helps you create in-memory search indexes for data residing
in regular relational/non-relational databases.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window forage-1.0.11.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.