For developers, who are building real-time data-driven applications, Redis is the preferred, fastest, and most feature-rich cache, data structure server, and document and vector query engine.

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

A modern replacement for Redis and Memcached

A flexible distributed key-value database that is optimized for caching and other realtime workloads.

An efficient, small mobile key-value storage framework developed by WeChat. Works on Android, iOS, macOS, Windows, POSIX, and OHOS.

Distributed transactional key-value database, originally created to complement TiDB

Fast key-value DB in Go.

An embedded key/value database for Go.

🥑 ArangoDB is a native multi-model database with flexible data models for documents, graphs, and key-values. Build high performance applications using a convenient SQL-like query language or JavaScript extensions.

Apache ZooKeeper

Garnet is a remote cache-store from Microsoft Research that offers strong performance (throughput and latency), scalability, storage, recovery, cluster sharding, key migration, and replication features. Garnet can work with existing Redis clients.

Open-source, low-latency key/value engine built on Valkey with query subscriptions and hierarchical storage tiers.

immudb - immutable database based on zero trust, SQL/Key-Value/Document model, tamperproof, data change history

Lightweight, fast and reliable key/value storage engine based on Bitcask.

BuntDB is an embeddable, in-memory key/value database for Go with custom indexing and geospatial support

Redis re-implemented with SQL

Lightweight and blazing fast key-value database written in pure Dart.

A generic dynamo implementation for different k-v storage engines

A simple, fast, embeddable, persistent key/value store written in pure Go. It supports fully serializable transactions and many data structures such as list, set, sorted set.

Distributed, in-memory key/value store and cache. It can be used as an embedded Go library and a language-independent service.

Simple key-value storage with support for multiple backends

:nut_and_bolt: A relentless key-value store for the browser.

An ultra-lightweight database that supports key-value and time series data | 一款支持 KV 数据和时序数据的超轻量级数据库

An Embedded NoSQL, Transactional Database Engine

Lightweight IoT device information storage solution: KV/IAP/LOG. | 轻量级物联网设备信息存储方案：参数存储、在线升级及日志存储 ，全新一代版本请移步至 https://github.com/armink/FlashDB

a robust, scalable, and maintained set of caching packages

A high performance HTTP proxy cache server and RESTful NoSQL cache server based on HAProxy

A redis protocol compatible nosql, it support multiple storage engines as backend like Google's LevelDB, Facebook's RocksDB, OpenLDAP's LMDB, PerconaFT, WiredTiger, ForestDB.

⚡️ Advanced in-memory caching for JavaScript

:snowboarder: EJDB2 — Embeddable JSON Database engine C library. Simple XPath like query language (JQL).