tm

What?

tm wraps mate in a warm, project-opening embrace. You can open TextMate project files by name, with tab-completion.

Installation

Create ~/.tmproj and save your TextMate projects into it. Check out this project, and put the tm binary somewhere you can execute it. Then you can just run tm foo to open ~/.tmproj/foo.tmproj.

For extra goodness, see setup.sh, which gives mate tm's powers, namely opening TextMate projects by name, and tab-completion entries for projects.