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Databases & Storage

European search, vector databases, collaboration storage, object storage, and data infrastructure.

5 curated entries, searchable by use case, country, license, deployment, and source model.

build search and retrieval systemsstore files under European controlrun vector search for AI appsoperate databases and data backends

CrateDB

Open sourceMediumActive

Distributed SQL database for real-time analytics, time-series, and machine data.

Origin
Austria / Germany
License
Apache-2.0
Pricing
Open-core
Deployment
Cloud, Self-hosted, Managed
sqltime-seriesanalyticsdistributed-databaseiot
store machine dataquery time-seriesrun real-time analyticsserve industrial IoT data

CrateDB has European company roots and operations.

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Elasticsearch

ProprietaryHighActive

Distributed search and analytics engine used for search, observability, security, and retrieval workloads.

Origin
Netherlands
License
Elastic License / AGPL portions
Pricing
Open-core
Deployment
Cloud, Self-hosted, Managed
stars
77.1k
searchanalyticslogsvector-searchdata-platform
build search experiencesindex logsrun retrieval systemsanalyze operational data

Elastic N.V. is registered with a legal address in Amsterdam, Netherlands.

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Nextcloud

Open sourceHighActive

Self-hosted collaboration and file sync platform for documents, storage, sharing, and apps.

Origin
Germany
License
AGPL-3.0
Pricing
Open-core
Deployment
Cloud, Self-hosted, On-premises
stars
35.9k
file-storagecollaborationself-hostedsyncdocuments
self-host filesreplace proprietary cloud storageshare documentssupport team collaboration

Nextcloud GmbH is a German company behind the Nextcloud server project.

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Qdrant

Open sourceHighActive

High-performance vector database and vector search engine for AI applications.

Origin
Germany
License
Apache-2.0
Pricing
Open-core
Deployment
Cloud, Self-hosted, Managed
stars
32.5k
vector-databaseaisemantic-searchrustretrieval
build RAG systemsrun semantic searchstore embeddingsserve recommendations

Qdrant is operated by Qdrant Solutions GmbH in Berlin, Germany.

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SurrealDB

ProprietaryMediumActive

Multi-model database for modern applications with SQL-like querying and real-time APIs.

Origin
United Kingdom
License
Business Source License
Pricing
Open-core
Deployment
Cloud, Self-hosted, Managed
databasemulti-modelrealtimerustapplication-backend
build app backendsprototype realtime data modelscombine document and graph dataself-host database services

SurrealDB is a UK-origin database company and open-source project.

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