77+ Key-Value Databases Ranked & Compared

In-memory data store used as a database, cache, message broker, and streaming engine

Distributed reliable key-value store for the most critical data of a distributed system

Fast key-value storage library by Google providing ordered mappings with LSM-tree architecture

Multi-model database combining documents, graphs, vectors, and time-series with built-in API layer and real-time capabilities

High-performance embeddable key-value store optimized for fast storage on SSDs

Modern in-memory data store fully compatible with Redis and Memcached, delivering 25x more throughput

The most popular document database for modern applications

Open-source high-performance key-value database forked from Redis, backed by the Linux Foundation

Ultra-fast mobile key-value storage powered by mmap and protobuf, built by WeChat

Distributed transactional key-value database providing ACID guarantees at scale

Distributed, transactional key-value store with multi-model layers and strict serializability

Fast, embeddable key-value database written in pure Go with LSM tree and value log separation

High-performance distributed memory caching system for speeding up dynamic web applications

Multi-model database unifying document, graph, and key-value in a single engine with AQL

Multithreaded Redis fork with higher throughput and active replication

Distributed real-time database management system built into Erlang/OTP for telecom-grade fault tolerance

Redis-compatible key-value engine with query subscriptions and hierarchical storage tiers

Immutable, tamperproof database with cryptographic verification for zero-trust environments

Lightweight in-memory key-value cache for Go with expiration and cleanup

Unified real-time data platform combining in-memory data grid with stream processing

Pure Go implementation of LevelDB key-value store with LSM-tree storage

High-performance LSM key-value store in Go, powering CockroachDB as its storage engine

Distributed in-memory database with ACID transactions, SQL, and compute capabilities

Embedded Java database engine providing concurrent Maps, Sets, and Queues backed by disk or off-heap memory

Multi-model database combining graph, document, key-value, and object models with SQL support and ACID transactions

Lightweight, fast, and reliable embedded key-value storage engine based on the Bitcask model

Embeddable in-memory key-value database for Go with custom indexing and geospatial support

Open-source distributed SQL database combining high availability, scalability, strong consistency, and ACID transactions

Redis re-implemented with SQLite for persistent, ACID-compliant key-value storage

Lightweight and blazing-fast key-value database written in pure Dart for Flutter apps

Distributed Redis-compatible key-value NoSQL database built on RocksDB for cost-effective persistent storage

ACID document database with integrated full-text search, time series, and distributed counters

In-memory computing platform combining a database and Lua application server for extreme performance

Simple, fast, embeddable, persistent key/value store in pure Go with rich data structures

Distributed, in-memory key/value store and cache with Redis-compatible protocol support

Large-scale CRDT set implementation for timestamped events backed by Redis

Ultra-fast memory-mapped embedded key-value store with full ACID transactions and zero-copy reads

Modern scalable NoSQL database written in Rust with BlueQL query language for performance and flexibility

IoT-optimized time-series database with hybrid in-memory and disk storage from Toshiba

In-memory data grid providing real-time, consistent access to data-intensive applications at massive scale

Distributed in-memory graph processing engine with strongly-typed key-value store, formerly Trinity

Exabyte-scale distributed storage and processing platform for big data from Yandex

RocksDB-compatible key-value storage engine with optimized tail latency, throughput, and compression

Widely-used open-source Java caching library with JCache compliance and distributed clustering via Terracotta

Flash-optimized distributed NoSQL database for real-time applications at massive scale

Open-source distributed in-memory data grid with multi-protocol access and cross-site replication

Multi-model database supporting graphs, documents, key-value, vectors, time-series, and search in one engine

Open-source distributed in-memory cache for .NET and Java with pub/sub messaging

In-memory data grid with fault-tolerant caching, transactions, and event processing for enterprise Java applications

Distributed NoSQL key-value database with masterless architecture for high availability and fault tolerance

Zero-DBA embedded relational database with nano-footprint for application developers

Serverless, fully managed NoSQL key-value and document database with single-digit millisecond performance at any scale

Globally distributed, multi-model database service with turnkey multi-region replication and single-digit millisecond latency

Global edge key-value store with low-latency reads across 330+ locations

Apple's cloud database service for seamless data sync across all Apple platforms

Self-learning multi-model NoSQL database with automatic normalization to 6th normal form

Multi-model NoSQL database for enterprise applications with SQL++ support

In-memory computing platform for real-time analytics and extreme transaction processing

Globally distributed, strongly consistent relational database with unlimited scale and 99.999% availability

In-memory computing platform built on Apache Ignite for real-time transactions and analytics

Embedded Java NoSQL database with flexible multi-value data model and concurrent B+Tree storage

High-performance multi-model data platform unifying SQL, objects, documents, and key-value access on a single engine

Ultra-scalable distributed SQL database with full ACID compliance and NoSQL-speed ingestion

Schemaless NoSQL key-value store for massive volumes of semi-structured data with strong consistency

Distributed NoSQL database providing key-value, table, and document data models with ACID transactions

High-performance distributed column-oriented time-series database with native transactional support

In-memory data grid with distributed caching, parallel query, and high availability for .NET and Java

Enterprise-grade distributed in-memory data grid for sub-millisecond, low-latency applications