Calendly - Say goodbye to phone and email tag for finding the perfect meeting time with Calendly. It's 100% free, super easy to use and you'll love our customer service.

Nolt - A fast & beautiful way to collect user feedback

Cal.com - Cal.com (formerly Calendso) is the open source Calendly alternative.

Changelogfy - Changelogfy is an all-in-one platform to collect, organize and manage customer and teammates feedback, prioritize and build a product roadmap, and announce product updates.

SavvyCal - A scheduling tool both the sender and the recipient will love.

Canny - Canny helps you collect and organize feature requests to better understand customer needs and prioritize your roadmap.