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A little curiosity. A world of open source.
THE FIRST COLLECTIONRedis is an open-source in-memory data structure server used as a cache, NoSQL database, message broker, search and vector query engine. The README covers key use cases, data types, client libraries, quick start, and source build instructions.
Valkey is a high-performance, distributed key-value data structure server optimized for caching and real-time workloads, forked from the open-source Redis project.
SurrealDB is a multi-model database built in Rust, unifying document, graph, relational, time-series, geospatial, and key-value data with real-time and vector search capabilities.
Dragonfly is an in-memory data store presented as a modern Redis and Memcached replacement. It aims for API compatibility, high throughput, lower resource use, and features such as a shared-nothing architecture, adaptive caching, and fork-less snapshots.
FrogDB is a pre-release, Redis 8.0-compatible, memory-first database written in Rust. It speaks RESP2/RESP3 for drop-in use with existing Redis clients and provides core and module-style data types, JSON, time series, vector and full-text search, Raft-based clustering with read replicas, and RocksDB-backed persistence.
DBeaver is a free, multi-platform database tool and SQL client for developers, DBAs and analysts, supporting 100+ database drivers via JDBC/ODBC, with SQL editor, data editor, ER diagrams, import/export and AI chat integration.
MongoDB database repository: source for the mongod database server and mongos sharding router, with documentation for downloading, building, running, mongosh shell, Compass install, client drivers, packaging, bug reporting and community forums.
LiteDB is a lightweight, serverless NoSQL embedded database for .NET that stores data in a single file, offering ACID transactions, LINQ queries, and a MongoDB‑like API while remaining under 450 KB.
RxDB is a local-first, reactive NoSQL database for JavaScript apps, running in browsers, Node.js, React Native, Electron and more. It provides a swappable storage layer and a sync engine that replicates with your existing backend via HTTP, GraphQL, CouchDB, WebSocket and other adapters.
