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.

LinkedIn Recruiter - LinkedIn Recruiter is a recruiting tool to hire talent from LinkedIn.

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

Lever - A modern web app for hiring. Lever is a simple, powerful way to manage lists of candidates during the hiring process.

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

Greenhouse - Greenhouse Software makes companies great at hiring.