How well do you know dev tools?

Ruby? Simple and expressive. DigitalOcean? Great value. New Relic? Easy setup.

Can you identify which tool people use for the following reasons?

Great for prototyping
Free
Fast idea validation
Integrates right with Photoshop

Turn static mockups into prototypes with animation & interaction
This is it!
KISSmetrics helps you get actionable metrics for your business.
This is it!
Powerful open source group chat
This is it!
Perl real-time web framework
This is it!