FREEDOM251

Freedom251 › Developer Tools

Free and open first

Best Query Engine Software in 2026

Query engines can help you work with data across sources, but their capabilities and deployment approaches differ. Compare federated queries, heterogeneous sources, source connectors, SQL support, and streaming sources against the data and query patterns you need to handle. Deployment and result caching add technical considerations; free-plan availability and paid-from pricing offer cost context. Comunica, Apache Drill, and Apache Hive are among the entries to review. Use the listed criteria to weigh connector coverage and query support alongside how you expect to run an engine and whether its pricing details suit your requirements.

  1. 1

    Apache Hive

    Free plan Open source APILinuxMac+2

    Apache Hive combines SQL data warehousing with metadata services, transaction support, and connections to multiple storage systems.

    9.2 Open source Visit site
  2. 2

    PrestoDB

    Free plan Open source APILinuxMac+2

    PrestoDB is a free query engine for federating queries across heterogeneous sources, with deployment and security options documented.

    8.7 Open source Visit site
  3. 3

    Apache Drill

    Free plan APILinuxMac+2

    Apache Drill offers in-place SQL queries across varied data sources, with options for BI tools and custom applications.

    7.6 Open source Visit site
  4. 4

    Apache Impala

    Free plan APILinuxMac+1

    Apache Impala is a free analytic database for SQL queries across supported open data formats and Hadoop infrastructure.

    7.6 Free plan Visit site
  5. 5

    Apache Arrow DataFusion

    Free plan LinuxMacSelf-hosted

    DataFusion offers a customizable query engine with a broad set of built-in formats and runtime controls.

    7.5 Free plan Visit site
  6. 6

    Apache Kylin

    Free plan APILinuxSelf-hosted+1

    Apache Kylin offers an OLAP engine with SQL modeling, streaming support, and connections to named BI tools. Its Linux-only support and deployment requirements are important considerations.

    7.5 Open source Visit site
  7. 7

    Comunica

    Free plan APILinuxMac+3

    Comunica offers a configurable approach to querying across decentralized RDF sources, with browser, JavaScript, and command-line use.

    7.4 Open source Visit site
  8. 8

    Denodo Platform

    Free plan APILinuxSelf-hosted+2

    Denodo Platform brings data access, shared definitions, and governance into one data layer, with multiple integration approaches and AI features.

    7.4 Pricing on request Visit site
  9. 9

    Firebolt

    Free plan APILinuxSelf-hosted+1

    Firebolt offers both self-managed and managed deployment paths, plus a free self-hosted plan and a managed service with usage-based compute billing.

    7.3 Free plan Visit site
  10. 10

    IBM Db2

    Free plan APILinuxSelf-hosted+2

    Choose IBM Db2 if you need a database for varied enterprise workloads, with query optimization, vector queries, and options for availability and security.

    7.2 Free plan · paid from $630/mo Visit site
  11. 11

    Starburst Enterprise Context Layer

    Free plan APISelf-hostedWeb

    The Context Layer combines data product governance, version control, lineage checks and a semantic layer.

    6.9 Free plan · paid from $0.50 · 30-day trial Visit site
  12. 12

    Trino

    Free plan APILinuxSelf-hosted+1

    Trino is aimed at federated SQL analytics across data systems, with deployment choices for cloud and on-premises environments.

    6.9 Free plan Visit site
  13. 13

    Ontop

    Free plan APILinuxMac+3

    Choose Ontop if you need an open source way to expose relational databases as virtual knowledge graphs and query them with SPARQL.

    6.8 Open source Visit site
  14. 14

    Starburst Galaxy

    Free plan APILinuxWeb

    Galaxy brings federated SQL queries, ingestion, and Iceberg maintenance together in a managed cloud service.

    6.8 Free plan · paid from $0.50 · 30-day trial Visit site
  15. 15

    Teiid

    Free plan APILinuxSelf-hosted

    Teiid provides a gateway approach for querying multiple enterprise data sources through familiar interfaces, without storing the data itself.

    6.8 Open source Visit site
  16. 16

    Dremio

    Free plan Web

    Dremio offers a free tier, a trial-based cloud option, and a self-managed Enterprise plan.

    6.3 Free plan · 30-day trial Visit site
  17. 17

    Amazon Athena

    Paid APIWeb

    Athena offers several ways to submit SQL queries and supports a broad set of data formats and connectors.

    5.8 From $5 Visit site
  18. 18

    e6 Query Engine

    Paid APILinuxSelf-hosted+1

    e6 Query Engine combines SQL, AI and vector workloads over existing lakehouse tables with flexible deployment and query controls.

    5.7 From $0.17 Visit site
  19. 19

    Google BigQuery

    Free plan Web
    5.7 Free plan Visit site
  20. 20

    Alibaba Cloud MaxCompute

    Paid Web

    MaxCompute offers distinct subscription and hourly-billed compute choices alongside its listed data capabilities.

    5.1 From $0.05 Visit site
  21. 21

    Query

    Paid APIWeb

    Choose Query if your security team needs to search distributed sources without centralizing their data, or run detections where that data resides.

  22. 22

    Databricks SQL Warehouse

    Paid Web

    Databricks SQL Warehouse combines lakehouse data support with streaming ingestion and separate storage and compute.

  23. 23

    Cloudera Data Warehouse

    Paid Web

    Choose Cloudera Data Warehouse if your organization needs web-based enterprise data access with data lake support in a hybrid deployment.

    4.7 From $0.07 Visit site
  24. 24

    Azure Synapse Analytics

    Paid Web

    Choose Azure Synapse Analytics if your workloads call for data-lake queries, SQL warehousing, Spark processing, or interactive log and telemetry analysis.

    4.6 Pricing on request Visit site
  25. 25
    4.3 Pricing on request Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

More in Developer Tools