InterestExplorer - Discover 1000's of hidden Facebook interests to target.
Incoming Feedback by Hotjar - Instant visual feedback for your website or app!
Facebook Ad Hunter - Facebook Ad Hunter uncovers hidden audiences to target when running Facebook Ads.
Canny - Canny helps you collect and organize feature requests to better understand customer needs and prioritize your roadmap.
AdEspresso - Optimize your Facebook Ads Easily, Like Morning Coffee
ProductBoard Customer Feedback Portal - Share feature plans and collect feedback at scale for free