No. 8 of 23 ·Data Federation Software

Apache Calcite

Self-hosted · API

Freedom report

Two barsScore 6.3

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely0 of 6 device platforms
DocumentedPlans, terms and facts published

Apache Calcite is ranked #8 of 23 in data federation software on Freedom251. It runs on API, Self-hosted. There is a free plan.

Apache Calcite plans and pricing

All plans

Apache Calcite Free Open source database framework · source release and Maven artifacts calcite.apache.org · 4 Oct 2026

Compared on data federation software

Free plan: Yes
Cloud hosted: No
Self-hosted: Yes
SQL querying: Yes
Row-level security: No
API access: Yes

Best Apache Calcite alternatives

See all 12

Two bars Denodo Platform Free tier No. 1Free6.6 Two bars Stardog Free tier No. 2Free6.6 Two bars Apache Drill Free tier No. 3Free6.5 One bar Teradata VantageCloud Free tier No. 4Free6.5 One bar Starburst Galaxy Free tier No. 5Free6.4 One bar Teiid Free tier No. 6Free6.4

The record

Purpose: Apache Calcite is a dynamic data management framework that provides components of a database management system while omitting data storage, data processing algorithms, and metadata storage.
SQL: Calcite provides an industry-standard SQL parser, validator, and JDBC driver.
Query optimization: Calcite represents queries in relational algebra, applies planning rules, and optimizes using a cost model.
Federation: Calcite can mediate between applications and multiple data storage locations and processing engines, and can push computation to a source database.
Adapters: Listed adapters include Arrow, Cassandra, CSV, Druid, Elasticsearch, JDBC, MongoDB, Redis, Spark, and Splunk.
JDBC connectivity: The JDBC driver supports local connections and remote connections using JSON over HTTP or Protobuf over HTTP.
Downloads: Calcite is released as source and through Maven; the downloads page lists version 1.42.0 dated 31 May 2026.
Runtime requirements: The development page lists Git and Java JDK 8u220 or later, with Java 11 preferred, as build prerequisites.
Security: Apache's Security Team coordinates vulnerability handling for Apache projects, and the project releases fixes through affected package releases.
Release integrity: The downloads page instructs users to verify downloaded artifacts with a PGP signature or hash.
Support: The project directs users to its developers mailing list, Calcite Jira, Stack Overflow, and source code for help.
Contribution: The project welcomes contributions and recommends discussing large contributions through a Jira case or the developers mailing list.
Limit: Calcite does not store or own data; a data source must be registered through a schema or adapter.
Founded: 2014
Price from: Free

Where it ranks on Freedom251

Best Data Federation Software in 2026#8 of 23

Is Apache Calcite yours?

Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.

Claim it free Promote Apache Calcite

Sources

calcite.apache.org/docs/· checked 4 Oct 2026
calcite.apache.org· checked 4 Oct 2026
calcite.apache.org/docs/adapter.html· checked 4 Oct 2026
calcite.apache.org/downloads/· checked 4 Oct 2026
calcite.apache.org/develop/· checked 4 Oct 2026
apache.org/security/· checked 4 Oct 2026
calcite.apache.org/community/· checked 4 Oct 2026