The very cool EC2 Firefox Extension is now an open source project on SourceForge!
The extension makes it really easy to launch and manage Amazon EC2 instances. After creating your keypairs and security groups, you can simply right-click on any of the listed AMIs (Amazon Machine Images) and choose to launch one or more instances.
All of your running instances are listed at the bottom where they can be identified, controlled, monitored, shut down, and so forth. You can easily capture the public DNS name of any running instance, and then paste it into your favorite SSH client (e.g. PuTTY, my personal favorite) to create a secure connection to your new EC2 instance.
As-is, the extension is pretty cool but as always seems to be the case with something cool, everyone who uses it has ideas for even more cool features. Some people seem to want a slightly less technical view and others want to go in the opposite direction. A lot of people would like to have more control over the list of displayed AMIs.
Let us know what you come up with!