Every Product Manager's must-have!
I've been working as a Product Manager on various SaaS platforms, and over the past 3 years UserVoice has played an essential role in guiding my product decisions. The array of tools they offer really makes it easy to collect user feedback in a less intrusive way.
Most importantly, end-users love the feedback UI, too, and seem to keep continue engaging without me having to solicit feedback over and over again. I've tried other solutions out there - Zendesk, GetSatisfaction, IdeaScale... Nothing worked as well as UserVoice.