Just some shameless self-promotion:
I recently uploaded my 3rd open-source project to SourceForge.net. It’s called jspinfo() and – for all of you who are familiar with PHP – it’s like phpinfo() but as a JSP file.
So, if you are a developer and you need some information about some common server settings, then give jspinfo() a try: just upload the file to your Java-based application server (preferrable Apache Tomcat) and open it in your browser.
For more information and the download please visit http://jspinfo.sourceforge.net/