Percona Server for MongoDB is a free, enhanced, fully compatible, open source, drop-in replacement for the MongoDB Community Edition that includes enterprise-grade features and functionality.

Percona Server for MongoDB provides:

• All features and benefits of MongoDB 3.2 Community Edition.
• MongoDB distributed MMAP v1 and WiredTiger storage engines
• Optional RocksDB and Percona Memory Engine storage engines
• Full online backup support for PerconaFT and MongoRocks
• SASL Authentication plugin, enabling authentication through OpenLDAP or Active Directory.
• Audit plugin, providing the ability to track and query database interactions of users or applications