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.

HubSpot CRM - Free CRM software for small businesses.

GetSatisfaction - Get Satisfaction is the leading customer engagement platform that helps companies build better relationships with their customers and prospects, through the best online customer community.

Keap - Grow Sales. Save Time. Get Organized.

idea.informer - Idea Informer is a idea forum similar to uservoice or getsatisfaction.

Less Annoying CRM - A simple customer relationship manager made just for small businesses. Manage contact info, track leads, and never miss a follow-up.