Brick By Brick - A free guide to building awesome communities
Mongoku - A neat Web-based GUI for MongoDB
Telescope - Telescope is an open-source app that lets you easily set up your own online community.
adminMongo - An open source admin user interface for your MongoDB
Stacks Accelerator - $50k Investment + 3 Month Program for Web 3.0 Startups
MongoLab - MongoLab is a fully managed MongoDB Database-as-a-Service platform that automates the operational aspects of running MongoDB in the cloud.