redis / redis

In-memory data structure store used as a cache, database, message broker, and vector/document query engine.

GrafeoDB / grafeo

Grafeo is a pure-Rust, high-performance graph database that can be embedded as a library or run as a standalone database, with optional in-memory or persistent storage. Grafeo supports both LPG and RDF and all major query languages.

dragonflydb / dragonfly

A modern replacement for Redis and Memcached

apache / ignite

Apache Ignite

Cysharp / MasterMemory

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

ronitgupta138 / Vectra-Core

⚡ In-Memory Vector Search Engine & HNSW ANN Graph in Java 21 Loom. Sub-millisecond KNN retrieval, 8-bit scalar quantization (SQ8), 16,000+ QPS.