ParseProGo is a desktop-application for creating and editing php, html, and text-files with integrated preview. ParseProGo allows working on multiple documents, autosaving, easy html-formatting (css in <div>-elements, html-format-tags, table-formatting, <doctypes>s, etc.), exchange of special characters, personalizing, syntax highlighting, connection with a PHP-dictionary, stickies as visible clipboards, and full usage of the OperatingSystems' features (like Find&Replace).
ParseProGo is Freeware. It can be downloaded without registration and used without restrictions, and it's not necessary to install it.