Contemplate is a PHP-based, open source web templating system. You can store content, design templates and code in separate files, edit them with your favorite tools, then use Contemplate to merge them at runtime.
It offers a bunch of tools which allow you to work easier and faster on your everyday work. Here is a short overview of its features: Syntax Highlighting, Code Insight, DataBase wizard, DomWalker, ProjectManager, HTMLExporter, ASP ANd PHP Debugger