H2 is an embeddable RDBMS written in Java
NoSQL embedded document store for Java
C# .NET NOSQL ( key value store embedded ) ACID database
Embedded Go Database, the fast alternative to SQLite, gorm, etc.
Java and Android Database - fast and lightweight without any ORM
Open Source realtime backend in 1 file
PoloDB is an embedded document database
Micro Graph Database for Python Applications
Document-oriented, embedded SQL database
GlueSQL is quite sticky. It attaches to anywhere
Relative Examples and Resources of iBoxDB, etc...
A simple, fast and versatile Datalog database
A C utility library and persistent key/value storage engine
Immutable database based on zero trust, SQL and Key-Value, tamperproof
One of the fastest embeddable key-value ACID database
A lightweight, lightning-fast, in-process vector database
A scalable, distributed, collaborative, document-graph database
Build Anything Sync Anywhere
Ultra High-performance Lightweight Embedded and Server OLTP RDBMS
A python NoSQL dictionary database, with concurrent access and ACID
An open source, self-hosted, real-time port monitoring tool
Couchbase Lite for Dart and Flutter
Fast SQL-based BI tool for real-time dashboards and analytics
Scalable, fast, and disk-friendly vector search in Postgres