23 open-source Database & Data Management vendors.

Open-source software for Database & Data Management that you can self-host, with auditable source code — regardless of the developer's headquarters.

• Apache CassandraSelf-hosted / open source

  Proven open-source distributed NoSQL database for massive datasets.

  United States

• Apache CouchDBSelf-hosted / open source

  Open-source document database with JSON storage and HTTP API.

  United States

• ArangoDBSelf-hosted / open source

  German open-source multi-model database (document, graph, key-value).

  Germany

• ChromaSelf-hosted / open source

  Open-source AI-native vector database for embeddings in LLM applications.

  United States

• ClickHouseNon-EU vendor

  Open-source column-store database for fast analytical queries (Yandex origin)

  United States

• CrateDBNon-EU vendor

  Distributed SQL database optimised for machine data and IoT applications

  United States

• DuckDBSelf-hosted / open source

  In-process analytical database, the SQLite for OLAP, developed in the Netherlands

  Netherlands

• ElasticSelf-hosted / open source

  Elastic (Elastic N.V.), headquartered at Keizersgracht 281, Amsterdam, Netherlands, develops Elasticsearch, the widely used distributed search and analytics engine, alongside Kibana and Logstash (the "ELK stack"). Since September 2024 Elasticsearch and Kibana source code is triple-licensed under AGPLv3, SSPL, and the Elastic License v2, with AGPLv3 being OSI-approved, restoring genuine open-source status after the 2021 licensing dispute. It can be self-hosted, run via Elastic Cloud with selectable EU data-center regions, or deployed via other providers, giving strong flexibility for EU sovereignty requirements.

  Netherlands

• FerretDBSelf-hosted / open source

  Open-source proxy translating MongoDB protocols to PostgreSQL.

  United States

• Firebird SQLSelf-hosted / open source

  Self-hosted relational database stewarded by the non-profit Firebird Foundation, registered in the Czech Republic.

  Czechia

• GarnetSelf-hosted / open source

  Open-source Redis-compatible cache store from Microsoft Research, written in .NET.

  United States · owner in United States

• MariaDBEU-hosted, non-EU parent

  open-source relationele database, community-gedreven fork by MySQL

  Finland · owner in United States

• MilvusSelf-hosted / open source

  Open-source vector database (Apache 2.0), originally built by Zilliz (founded in China, now headquartered in San Francisco, US); governed as a graduated project of the LF AI & Data Foundation (Linux Foundation, US).

  United States

• MySQLSelf-hosted / open source

  Self-hosted relational database owned and controlled by Oracle Corporation (US).

  United States

• Neo4jNon-EU vendor

  Leading graph database for connected-data applications, originally from Sweden

  United States

• OrientDBSelf-hosted / open source

  Open-source graph and document database, part of SAP (Germany) since 2018.

  Germany

• QuestDBNon-EU vendor

  Open-source time-series database for high ingestion speeds and SQL queries

  United Kingdom

• RethinkDBSelf-hosted / open source

  RethinkDB is an open-source, real-time change-feed-oriented NoSQL document database, now governed by its community under the Linux Foundation after its original company folded in 2016.

  United States

• SQLiteSelf-hosted / open source

  Self-hosted, embedded relational database in the public domain, stewarded by Hwaci (D. Richard Hipp), US.

  United States

• SurrealDBNon-EU vendor

  Multi-model database combining SQL, document, graph and key-value models

  United Kingdom

• TiDBNon-EU vendor

  TiDB is an open-source, MySQL-compatible distributed SQL database created by PingCAP (founded Beijing 2015, now HQ'd in Sunnyvale, CA), also sold as the managed TiDB Cloud service.

  United States

• ValkeySelf-hosted / open source

  Valkey is an open-source, in-memory key-value data store and Redis fork, hosted under the Linux Foundation (US). It is community-maintained and self-hosted by users; no vendor-operated cloud service exists.

  United States

• YugabyteDBNon-EU vendor

  Distributed open-source SQL database compatible with PostgreSQL

  United States