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What is JaCoCo?

JaCoCo is a free library for Java code coverage, crafted by the EclEmma team, and has seen continuous improvement over the years based on insights gained from other libraries. The master branch of JaCoCo undergoes automatic building and publishing, which guarantees that each build complies with test-driven development principles, ensuring full functionality. Users can refer to the change history for the latest features and bug fixes. In addition, metrics related to the current JaCoCo implementation can be accessed on SonarCloud.io, providing further insights into its performance. JaCoCo can be easily integrated with various tools, allowing users to take advantage of its capabilities right from the start. Contributions aimed at enhancing its implementation and introducing new features are welcomed from the community. While there are several open-source coverage solutions for Java, the experience from developing the Eclipse plug-in EclEmma has highlighted that many existing tools are not ideally designed for integration purposes. One major drawback is that many of these tools cater to specific environments, like Ant tasks or command line interfaces, and they often lack a comprehensive API that would allow for embedding in a variety of settings. This limitation in flexibility frequently prevents developers from effectively utilizing coverage tools across multiple platforms, creating a gap that JaCoCo aims to fill with its adaptable architecture. Ultimately, JaCoCo seeks to provide a more versatile solution for developers looking for robust code coverage tools.

What is Coco Code Coverage?

Coco by Qt is an advanced code coverage and test analysis platform designed for developers, QA engineers, and compliance leads building safety-critical or performance-sensitive software. Supporting C, C++, C#, QML, and Tcl, Coco measures coverage from statement and branch analysis to Modified Condition/Decision Coverage (MC/DC), giving a granular view of code quality and test completeness. It integrates seamlessly with IDEs like Visual Studio, Eclipse, and Qt Creator, as well as CI/CD tools such as Jenkins and CMake, enabling automated coverage feedback within existing workflows. Coco’s instrumentation engine works across desktop, embedded, and cross-compiled environments, supporting diverse toolchains like GCC, Clang, ARM, and Green Hills. The platform helps teams meet functional safety requirements under ISO 26262, DO-178C, EN 50128, and IEC 62304, with ready-to-use qualification kits that save months of manual certification work. Its Cross-Compilation Add-on enables coverage analysis on constrained systems and microcontrollers, while the Test Center integration consolidates coverage data and test results for a unified QA dashboard. By highlighting untested logic, redundant test cases, and compliance gaps, Coco reduces testing time while increasing accuracy. Its audit-ready reports and traceable artifacts make it indispensable for industries like automotive, medical devices, rail, and aerospace. Whether running on Windows, Linux, macOS, or real hardware, Coco ensures developers know exactly what’s tested—and what’s missed. In a world where software quality and certification matter more than ever, Coco helps teams measure, optimize, and certify with confidence.

Media

Media

Integrations Supported

SonarQube Server
Apache Maven
Axivion Static Code Analysis
BlackBerry QNX
C#
FreeRTOS
Git
GitLab
JUnit
Java
Jenkins
Jira
QML
SystemC
Tcl
TeamCity
Visual Studio
VxWorks
XML
grcov

Integrations Supported

SonarQube Server
Apache Maven
Axivion Static Code Analysis
BlackBerry QNX
C#
FreeRTOS
Git
GitLab
JUnit
Java
Jenkins
Jira
QML
SystemC
Tcl
TeamCity
Visual Studio
VxWorks
XML
grcov

API Availability

Has API

API Availability

Has API

Pricing Information

Free
Free Trial Offered?
Free Version

Pricing Information

Pricing not provided.
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

EclEmma

Company Location

United States

Company Website

www.eclemma.org/jacoco/

Company Facts

Organization Name

Qt Group

Date Founded

1994

Company Location

Finland

Company Website

www.qt.io/quality-assurance/coco

Categories and Features

Categories and Features

Static Code Analysis

Analytics / Reporting
Code Standardization / Validation
Multiple Programming Language Support
Provides Recommendations
Standard Security/Industry Libraries
Vulnerability Management

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