An in-memory database that persists on disk
Hypothetical Indexes for PostgreSQL
An Embedded NoSQL, Transactional Database Engine
Mobile database: a replacement for Core Data & SQLite
A library with an embeddable, persistent key-value store for storage
High performance NoSQL database based on bitcask
H2 is an embeddable RDBMS written in Java
Realm is a mobile database, an alternative to SQLite key-value stores
Embeddable, replicated and fault tolerant SQL engine
Scalable, fast, and disk-friendly vector search in Postgres
Apache IoTDB
Command-line admin tool for observing and troubleshooting Postgres
A fast open-source OLAP database management system
Fast key-value DB in Go
Irmin is a distributed database
Database for Go with custom indexing and geospatial support
GridDB is a next-generation open source database
A relentless key-value store for the browser
Distributed database ecosphere
DLE provides blazing-fast database cloning to build dev environments
Relational Database
Lightweight on-disk hash table for fast key-value storage in pure PHP
About MayWeb is a lightweight, beautifully designed local development
Backup and Recovery Manager for PostgreSQL
Massively parallel, high performance analytics database