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
PlanBox - Finally an agile management tool all teams can share, whether Scrum-savvy or not.
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
Crowdicity - Idea management software for smart organizations.
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
Sideways 6 - Sideways 6 is the best way to involve your employees in innovation.