We're busily working away on version 2 of Trexy. Behind the scenes we use a system called The Goo to help stick things together. It helps me to traverse all the software artefacts that make up Trexy: templates, Perl modules, tasks, ideas, bugs, pages etc. - and it remembers a trail too.
If you want a new feature for Trexy, let us know (email@example.com) and we'll try to stick it in the next version!