productboard - Beautiful and powerful product management.
Simple Poll - The easiest way to create polls in Slack
ProdPad - ProdPad helps your team gather ideas, surface the best ones and turn them into product specs, and then put it all on a product roadmap.
Twitter Polls - Polls embedded in tweets
ProductPlan - Cloud-based product roadmap software solution
Surveys in Slack by Polly - The world's first fully immersive Slack-based survey product