UserVoice - UserVoice integrates easy-to-use feedback, helpdesk, and knowledge base management tools in one platform that empowers users to speak and companies to understand.

Gumroad - An all-in-one solution to sell your work and grow your audience.

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

Clanly App - Clanly is a free-to-use community app designed for influencers and personal brands. Create or join communities, monetize & build a cult.

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

FreeHumans - Rapidly recruit a community of engaged humans ready to provide real feedback. Reduce churn, drive engagement, and grow your business.