nosql

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.

Free universal database tool and SQL client

A scalable, distributed, collaborative, document-graph database, for the realtime web

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

The local-first database that runs on every JS runtime and replicates with your existing backend - no vendor, no lock-in - https://rxdb.info/

Graphs for Everyone

Proxy based Redis cluster solution supporting pipeline and scaling dynamically

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

The official MongoDB Node.js driver

LiteDB - A .NET NoSQL Document Store in a single data file

A Web UI for Elasticsearch and OpenSearch: Import, browse and edit data with rich filters and query views, create reference search UIs.

Web-based notebook that enables data-driven, interactive data analytics and collaborative documents with SQL, Scala and more.

Apache IoTDB

📚 后端程序员应该掌握的主流数据库知识

OctoSQL is a query tool that allows you to join, analyse and transform data from multiple databases and file formats using SQL.

OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text and Geospatial models in one Multi-Model product. OrientDB can run distributed (Multi-Master), supports SQL, ACID Transactions, Full-Text indexing and Reactive Queries.

Database for Android and JVM - first and fast, lightweight on-device vector database

:honeybee: IoT Technical Guide --- 从零搭建高性能物联网平台及物联网解决方案和Thingsboard源码分析 :sparkles: :sparkles: :sparkles: (IoT Platform, SaaS, MQTT, CoAP, HTTP, Modbus, OPC, WebSocket, 物模型，Protobuf, PostgreSQL, MongoDB, Spring Security, OAuth2, RuleEngine, Kafka, Docker)

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

High-performance open-source in-memory graph database for GraphRAG, AI memory, agentic AI, and real-time graph analytics. Cypher-compatible, built in C++.