Synthesio - Synthesio is a social intelligence tool or a marketing software that is specially made for the purpose of social media monitoring and social analytics.
Datahike - A durable datalog database adaptable for distribution.
Swift Social - All-in-One Social Media Growth and Management Tool
MySQL - The world's most popular open source database
Opteo - Opteo searches for statistically significant patterns in an account and creates "optimization tasks" to improve account performance.
Matisse - Matisse is a post-relational SQL database.