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.

Gone - An ephemeral to-do list

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

Streaks - The to-do list that helps you form good habits.

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

Todoist - Todoist is a to-do list that helps you get organized, at work and in life.