MongoDB Inc, which began as 10gen, develops and delivers commercial support for MongoDB, an open-source NoSQL database that stores data in JSON-like documents that have flexible schemas. It started developing MongoDB around 2007 as part of a planned Platform-as-a-Service product. Then in 2009, it shifted to an open-source development model. MongoDB ships in two editions: the MongoDB Community Server and the MongoDB Enterprise Server.

MongoDB is free and cross-platform. Some features that MongoDB supports are:

• Ad hoc queries
• Indexing
• Replication
• Load balancing
• File storage
• Aggregation
• Server-side JavaScript execution
• Capped collections
• Transactions