Birdeye - #1 most trusted reputation and customer experience platform for local business

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

Reputation.com - Reputation.com is a solution for tracking and improving online reviews, social media, and local search visibility for businesses.

UseResponse - Open-source, self-hosted customer feedback software, live chat and helpdesk system that you can install on your server. Organize documentation using knowledge base and get feedback from social networks with centralized system

Podium - Podium helps your business get more customer reviews, manage customer feedback, customer interaction, and online review management from one software.

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