lmdb-js
Simple, efficient, ultra-fast, scalable data store wrapper for LMDB
...It provides a simple interface for interacting with LMDB, as a key-value db, which makes it easy to fully leverage the power, crash-proof design, and efficiency of LMDB using intuitive JavaScript, and is designed to scale across multiple processes or threads. Several key features make it idiomatic, highly performant, and easy to use LMDB efficiently.