JaCoCo

6.7easy start · #10 of 26
in Test Coverage Tools

Free to practise onyes
Free trialnot on record
Well documentedyes
Runs where you worknot on record

Runs on api.

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JaCoCo is ranked #10 of 26 in test coverage tools on The Geeks Club. It runs on API. There is a free plan.

JaCoCo plans and pricing

All plans

Free Free Free Java code coverage library · EPL 2.0 license jacoco.org · 4 Oct 2026

Compared on test coverage tools

Free plan: Yes
Coverage types: instruction, branch, complexity, line, method, class
Supported languages: Java, Kotlin, Groovy, Scala
Report formats: HTML, XML, CSV
Coverage gates: Yes

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The record

Purpose: JaCoCo is a code coverage library for Java and Java VM based environments.
Coverage metrics: It analyzes instruction, branch, line, method, type, and cyclomatic complexity coverage.
Instrumentation: Its Java agent instruments class files on the fly as they are loaded, independently of the application framework.
Reports: It can create coverage reports in HTML, XML, and CSV formats.
Build tools: JaCoCo provides Ant tasks and a Maven plug-in for collecting execution data and creating reports.
Integrations: The integration matrix lists tools including Gradle, Eclipse, IntelliJ IDEA, Jenkins, SonarQube, and TeamCity.
Java support: JaCoCo officially supports Java class files from version 1.0 to 27 and experimentally supports version 28; its runtime and tools require Java 1.5 or higher.
Report requirement: Line coverage and source highlighting require class files compiled with debug information containing line numbers.
Security: The agent’s TCP connections and JMX interface have no authentication, and the documentation warns that exposing them to untrusted sources may reveal application information or permit denial-of-service attacks.
License: The library and its included documentation are made available under the Eclipse Public License 2.0, except where otherwise indicated.
Support: The project directs users to its public JaCoCo and EclEmma user group for feedback and questions.
Release schedule: The project says it is maintained by volunteers in their free time and does not commit to particular release dates.
Price from: Free

Where it ranks on The Geeks Club

Best Test Coverage Tools in 2026#10 of 26

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Sources

jacoco.org/jacoco/· checked 4 Oct 2026
jacoco.org/jacoco/trunk/doc/mission.html· checked 4 Oct 2026
jacoco.org/jacoco/trunk/doc/agent.html· checked 4 Oct 2026
jacoco.org/jacoco/trunk/doc/integrations.html· checked 4 Oct 2026
jacoco.org/jacoco/trunk/doc/faq.html· checked 4 Oct 2026
jacoco.org/jacoco/trunk/doc/license.html· checked 4 Oct 2026