Have you ever used Java’s keytool? A simplistic command line tool that’s a pain if you use it only once in awhile.
Some time ago I suggested KeyTool IUI as a nice visual replacement for the Java Keytool. The bad news is that the owner sold the software and it’s no longer available. [Update 2011/04/01] Good news! KeyTool IUI is now open source!
But there is another nice open source tool you can use:
It’s a user friendly GUI application for creating, managing and examining keystores, keys, certificates, certificate requests, certificate revocation lists and more.