HelpScout - Help Scout is a simple, straightforward way to provide excellent support

AppFollow - AppFollow is an integrated solution that makes monitoring, analyzing, and elevating your app's reputation easy.

Zendesk - Zendesk is a beautiful, lightweight help-desk solution.

appfigures - Cross-platform app store analytics for all of your mobile apps.

Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community

AppReviewBot - Get new iOS App Store and Google Play Store reviews directly in Slack, Microsoft Teams or Mattermost as soon as they happen. Unlimited apps, every country.