Immutable database and Datalog query engine for Clojure, ClojureScript and JS

GitQL is a extensible SQL-like query language and SDK to perform queries on various data sources such .git files with supports of most of SQL features such as grouping, ordering and aggregation and window functions and allow customization like user-defined types and functions

Source Generator based Embedded Typed Readonly In-Memory Document Database for .NET and Unity.

Project SnappyData - memory optimized analytics database, based on Apache Spark™ and Apache Geode™. Stream, Transact, Analyze, Predict in one cluster

A library for storing and querying graph data in Clojure

An in-memory database based on the CouchDB REST API and containing the CouchDB Futon and Fauxton web sites

Memory database

High performance key value database with useful json document indexing and manipulations.

High Performance Key-Value Store

ArangoDB-driver in golang

a fast version controlled database based upon memory mapped boost::multi_index containers.

Memory database for AI agents — stores typed memories (facts, preferences, events, entities, relations) with provenance, confidence, and bi-temporal validity, and answers with fused semantic + lexical + entity-graph + temporal retrieval. One Rust core, one binary wire protocol. Apache-2.0.

Terraform module to create AWS MemoryDB resources 🇺🇦

A library of cross platform C# data structures. Generic B-tree written in C#, which can be replaced with NoSQL database stored in the memory of discharge requirements in real-time (Firebase, Redis Cache, SAP HANA, Exadata, OLTP, etc.).

Clustered in-memory database based on MNESIA with simple SQL layer

Pure PHP SQL Like Query Language To Manipulate Arrays.

Jodis, Java Object Dictionary Server, Just Like Redis

Spring Boot Demo App with H2 In Memory Database

Iron Java in-memory database

Makato is blazing fast key-value type in-memory database, with TTL callback.