Databases and caches

Open-source backend platform with authentication, databases, storage, functions and messaging, available as Appwrite Cloud or self-hosted with Docker.

Multi-model database for documents, graphs and key-value data, queried with the AQL query language.

Self-hostable server for storage, search, sharing and sync of Atomic Data, with a web app and a RESTful API.

Open-source distributed storage system that serves object, block and file interfaces from one cluster built on commodity hardware.

Column-oriented SQL database management system for analytical queries, available as open-source server software and as a cloud service.

Distributed SQL database that runs as a cluster of nodes and keeps its data replicated across them.

Open-source reactive database and backend for web apps, with server functions written in TypeScript and a cloud platform run by the maker.

Analytical SQL database that runs in-process inside Python, Node.js and other applications, with a WebAssembly build for browsers.

S3-compatible object storage server for self-hosted, geo-distributed deployments, written in Rust.

Multithreaded, Redis-compatible key-value database and cache server, a fork of Redis.

Proprietary relational database management system from Microsoft, with Express, Standard and Enterprise editions.

Vector database for storing and searching embeddings, run as a Docker or Kubernetes server or as Milvus Lite, a Python library.

Document database server built on the document model, offered as a community edition and as commercial Enterprise editions.

Native graph database server that stores nodes and relationships and is queried with the Cypher language.

Spreadsheet-style interface for building online databases on SQLite, PostgreSQL or an existing database, self-hosted with Docker or offered as NocoDB Cloud.

Commercial relational database from Oracle, with a free developer edition and fully supported paid editions.

PostgreSQL connection pooler, load balancer and database sharder written in Rust.

Embeddable WebAssembly build of PostgreSQL, packaged as a TypeScript and JavaScript library for the browser, Node.js, Bun and Deno.

Open-source Go backend shipped as a single executable, with an embedded SQLite database, realtime subscriptions, authentication and a dashboard.

Vector search engine and vector database, run as a server with a REST and gRPC API, also offered as Qdrant Cloud.

Distributed key/value store, an independent LGPL-licensed fork of Redis.

In-memory data store used as a cache, database and streaming engine, offered under source-available and open-source licenses.

S3-compatible distributed object storage server written in Rust.

Java server that speaks the S3 API and forwards requests to other object storage backends, such as AWS S3, Azure Blob Storage, Google Cloud Storage, the local filesystem and SFTP.

Distributed file system and S3-compatible object store, written in Go, shipped as one weed binary.

Public-domain C library that implements a self-contained SQL database engine in a single file.

Multi-model database, built in Rust, that stores document, graph, relational and time-series data in one engine and can run embedded or as a server.

Open-source distributed SQL database, MySQL compatible, that supports hybrid transactional and analytical workloads.

Embedded SQL database engine written in Rust that is compatible with SQLite, with a hosted service beside it.

BSD-licensed in-memory key-value datastore for caching, message queues and primary database use, forked from Redis.

Cloud-native, horizontally scalable distributed database system built around MySQL.

Open-source platform for running many PostgreSQL instances on Kubernetes, with copy-on-write branching and scale-to-zero.