Copper is a Web-based project management software tool designed to help creative teams manage clients, projects, tasks, files, budgets, and events. It has an HTML/AJAX front end. It is available with full source for a licence fee or as a SAAS hosted service (compatible with iPhone, but available via PC/Mac/Linux and a Web browser).
Phpmole grew out of a port of Moleskine, since then it has grown and been redesigned to be a framework for a modulized development environment. For users it offers syntax highlighting, integrated help, a WYSIWG HTML editor, and remote file management, along with being midgard compatible. For developers, it is a modulized, object based php-gtk application, which could be extended to do almost anything - including reading mail.