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.
Best Referral Programs - A curated directory of startup referral programs
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.
Viral Loops - Viral Loops is a viral and referral marketing platform to launch ranking competitions, sweepstakes, pre-launch and referral programs.
idea.informer - Idea Informer is a idea forum similar to uservoice or getsatisfaction.
GrowSurf - Referral software for B2C, FinTech, and SaaS companies.