You can download the tool from: Util - Java Decompiler (JAD based) v1.0.exe (stand-alone O2 Platform script)
This is what it looks like when you open it:
And this is what happens after a *.jar file is dropped in the left-hand-side TreeView:
You can drop multiple jar files:
Apart the initial delay (caused by the unziping of the dropped jar file into a temp folder), the decompilation should be quite quick.
Other O2 Platform Java-based tools:
- O2 tools to view and script J2EE, Struts and Tiles xml config files
- Util - O2 Java Tools (IKVM Based) v1.0
More details on how this tool was created: