WebAsk - Learn to read the minds of your customers, co-workers and followers with this fully-customizable and light-weight toolkit for collecting and processing user feedback.

Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.

userinput.io - Get on-demand feedback for your app, website or idea. Learn how to improve by hearing real opinions.

Fibery - Work management platform that adapts to companies and grows with them.

Producter - Product management tool for product-led teams

ithinki - A simple user feedback tool for start-ups