Open Source realtime backend in 1 file
H2 is an embeddable RDBMS written in Java
NoSQL embedded document store for Java
PoloDB is an embedded document database
Embedded Go Database, the fast alternative to SQLite, gorm, etc.
Lightweight, embedded, syncable NoSQL database engine for iOS and Mac
C# .NET NOSQL ( key value store embedded ) ACID database
Document-oriented, embedded SQL database
GlueSQL is quite sticky. It attaches to anywhere
Micro Graph Database for Python Applications
A C utility library and persistent key/value storage engine
A simple, fast and versatile Datalog database
A bare-bones C# .NET Key-value Store in a single database file
A reactive client store for building super fast apps
An Embedded NoSQL, Transactional Database Engine
Java and Android Database - fast and lightweight without any ORM
A scalable, distributed, collaborative, document-graph database
A lightweight, lightning-fast, in-process vector database
Web-based SQL editor run in your own private cloud
Lightweight WASM Postgres with real-time, reactive bindings
Couchbase Lite for Dart and Flutter
A toolkit for SQLite databases
A library with an embeddable, persistent key-value store for storage
Scalable, fast, and disk-friendly vector search in Postgres