Canoo WebTest is a free open source tool for automated testing of web applications.
It calls web pages and verifies results, giving comprehensive reports on success and failure. The White Paper provides an overview of the features and the design rationale. Detailed information is provided in the Manual Overview as well as the Install and Troubleshooting guides.
Code Browser is a folding and outlining editor for Linux and Windows.
The editor is between a traditional text editor, a smalltalk class browser and a web browser like mozilla. It displays a structured text file (marker-based folding) hierarchically using multiple panes.
CodePress is web-based source code editor with syntax highlighting written in JavaScript that colors text in real time while it's being typed in the browser.