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Citrus

citrusframework.org

Free plan Linux
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Spec score 7.8 #16 of 26 in Integration Testing Tools

What it is

Citrus is a free integration-test framework for messaging applications and microservices. It can make a test act as both client and server across messaging interfaces, send and sequence messages, and validate payloads and other elements. Supported endpoints include HTTP, Kafka, JMS, Apache Camel, mail, FTP/SFTP, OpenAPI, SOAP, Docker, Kubernetes, Knative, SQL, and SSH. Validation covers JSON and XML, XML schemas, DTDs, and database data. Test cases can use loops, delays, retries, parallel sections, and timeouts. Tests are written in Java, XML, YAML, or Cucumber BDD features. Citrus integrates with JUnit 5, Cucumber, JBang, Quarkus, Spring Boot, TestNG, and JUnit 4, with Maven and Gradle setup guidance. It runs on Linux and requires Java 17 or newer since version 4.0. Citrus is Apache-licensed freeware for testing commercial applications.

Spec sheet

Purpose
Citrus is a test framework focused on messaging applications and microservices, for automated integration tests.Read 9 Oct 2026 · citrusframework.org
Support
The project invites users to contribute, submit feature requests, and report issues through its community repository.Read 9 Oct 2026 · citrusframework.org
License
Citrus is published free of charge under Apache License 2.0 and may be used to test commercial applications.Read 9 Oct 2026 · citrusframework.org
Founded
2006Read 23 Sep 2026 · citrusframework.org
Build tools
The download guide describes adding Citrus modules as test-scoped Maven dependencies and lists Gradle setup documentation.Read 9 Oct 2026 · citrusframework.org
Languages
Tests can be written in Java, XML, YAML, or as Cucumber BDD features.Read 9 Oct 2026 · citrusframework.org
Protocols
Supported endpoints include HTTP, Kafka, JMS, Apache Camel, mail, FTP/SFTP, OpenAPI, SOAP, Docker, Kubernetes, Knative, SQL, and SSH.Read 9 Oct 2026 · citrusframework.org
Runtime requirement
Since Citrus 4.0, the project requires Java 17 or newer to run.Read 9 Oct 2026 · citrusframework.org
Runtimes
Citrus integrates with JUnit 5, Cucumber, JBang, Quarkus, Spring Boot, TestNG, and JUnit 4.Read 9 Oct 2026 · citrusframework.org
Test logic
Test cases can sequence messages and use loops, delays, retries, parallel sections, and timeouts.Read 9 Oct 2026 · citrusframework.org
Testing
A test can act as both client and server on multiple messaging interfaces and validate message content.Read 9 Oct 2026 · citrusframework.org
Validation
Citrus validates message payloads and elements in JSON and XML, supports XML schema and DTD validation, and can validate database data.Read 9 Oct 2026 · citrusframework.org
Who it is for
Citrus is presented for enterprise integration testing, including testing messaging scenarios and microservices.Read 9 Oct 2026 · citrusframework.org

Plans and prices

Citrus Free Apache License 2.0 · test automation framework Read 9 Oct 2026 · citrusframework.org

Every Citrus plan and price →

Strong points and limits

Strong points

  • Supports many messaging and integration endpoints
  • Validates JSON, XML, schemas, DTDs, and databases
  • Offers loops, retries, delays, and parallel test sections
  • Works with several Java testing runtimes
  • Apache License 2.0 permits commercial testing

Limits

  • Requires Java 17 or newer since version 4.0
  • Runs on Linux
  • No free trial is listed

Who it suits

Citrus suits enterprise teams testing messaging scenarios, microservices, and other integrations. It fits projects using the listed protocols, languages, and test runtimes.

Verdict

Citrus provides broad protocol coverage and detailed message validation for automated integration tests. Its Linux platform and Java 17 requirement should be checked before adoption.

Where Specifiction places it

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