Redis is an in-memory database that persists on disk. The data model is key-value, but many different kind of values are supported: Strings, Lists, Sets, Sorted Sets, Hashes, Streams, HyperLogLogs, Bitmaps.

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

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

An embedded key/value database for Go.

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

🥑 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.

Fast key-value DB in Go.

Apache ZooKeeper

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

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

A generic dynamo implementation for different k-v storage engines

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

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

🔩 A relentless key-value store for the browser.

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 object store. It can be used both as an embedded Go library and as a language-independent service.

Simple key-value storage with support for multiple backends

An Embedded NoSQL, Transactional Database Engine

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.