Apache Spark
Apache Software Foundation · Analytical engines & OLAP
Distributed data processing engine with DataFrame and SQL APIs in Python, Scala, Java and R, plus structured streaming and MLlib
Apache-2.0Open sourceFreeLocalSelf-hostedNov 2, 2026
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ClickHouse
ClickHouse, Inc. · Analytical engines & OLAP
Open-source columnar OLAP database server for fast aggregations over billions of rows, with MergeTree storage, SQL and a managed ClickHouse Cloud
Apache-2.0Open sourceFreeLocalSelf-hostedNov 2, 2026
dbt
dbt Labs (Fivetran + dbt Labs) · ETL/ELT & orchestration
SQL-first transformation framework that compiles templated models, tests and documentation into warehouse tables; open-source Core plus a commercial platform
Apache-2.0Open sourceFreemiumLocalSelf-hostedNov 2, 2026
Elasticsearch
Elastic N.V. · Vector databases
Distributed search and analytics engine on Apache Lucene with full-text, aggregations, vector search and ES|QL; triple-licensed AGPL, SSPL and Elastic License
AGPL-3.0-only OR SSPL-1.0 OR Elastic-2.0Open sourceFreeSelf-hostedNov 2, 2026
OpenSearch
OpenSearch Software Foundation (Linux Foundation) · Vector databases
Apache-2.0 search and analytics suite forked from Elasticsearch and Kibana, governed by the OpenSearch Software Foundation
Apache-2.0Open sourceFreeSelf-hostedBroken
Trino
Trino Software Foundation · Analytical engines & OLAP
Distributed SQL query engine that federates queries across data lakes, warehouses and databases through connectors, formerly PrestoSQL
Apache-2.0Open sourceFreeSelf-hostedNov 2, 2026
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