PAR is simply brilliant. I've been able to go from a Windows application written in Perl with dependency hell to a lovely, self-contained executable which only requires the user to know how to double-click on an icon. Thanks PAR!
I've used Imager in number of projects, particularly those that need heavy duty image manipulation. Despite that, I keep forgetting that I've used Imager at all. Why? Because it just makes things so simple that I can get on with my job, rather than wrestling with my tools. If only everything was this easy!
Perl Training Australia uses coLinux to create virtual Linux boxes for students to use in their training courses. Copy the image, start the colinux service, and we're done. It's been rock-solid, and we've been using it for years.