EC2Box is a Web-based tool that allows EC2 users to open multiple shells, execute shared commands, upload files, and store connection info for EC2 instances running on Amazon Web Services (AWS).
jsonwatch allows you to track changes in JSON data given by shell commands or Web (HTTP) APIs, and see the differences in a convenient diff-like format. It is similar to watch -d, but for JSON.
Broadcasts commands over SSH to multiple hosts.
A LaTeX editor.