I published a web-based Heartbleed Bug check tool, https://techish.net/pub/Heartbleed/, based on the project from http://filippo.io/Heartbleed/. His server was overloaded and I wanted to provide some friends and colleagues a way to test their systems.
Along with the web-based version, you can also test from the command line in Linux. To find out more about the OpenSSL Heartbleed Bug, you can visit http://www.heartbleed.com/.
Hope this helps anyone out there needing a way to test if they are vulnerable.