What tools for test coverage analysis have you used or know?

For test coverage analysis in Java, the following tools are often used:

• JaCoCo — one of the most popular tools for measuring code coverage by tests. It easily integrates with Maven, Gradle, and other build tools.
• Cobertura — also a coverage analysis tool, although it is used less frequently now than JaCoCo.
• Emma — an old tool, now almost not used, but occasionally encountered.

Example of using JaCoCo with Maven:

<plugin>
  <groupId>org.jacoco</groupId>
  <artifactId>jacoco-maven-plugin</artifactId>
  <version>0.8.8</version>
  <executions>
    <execution>
      <goals>
        <goal>prepare-agent</goal>
      </goals>
    </execution>
    <execution>
      <id>report</id>
      <phase>test</phase>
      <goals>
        <goal>report</goal>
      </goals>
    </execution>
  </executions>
</plugin>

These tools show which parts of the code are covered by tests and which are not, helping to improve testing quality.