Maven provides a wide range of plugins that can be used to extend and customize the build process. Here are some of the most commonly used Maven plugins:

1. Maven Compiler Plugin: The Compiler plugin is used to compile the source code of the project. It can compile Java source code, as well as other programming languages, such as Groovy or Scala.

2. Maven Surefire Plugin: The Surefire plugin is used to run unit tests for the project. It generates reports on test results and coverage, and can be configured to run tests in parallel.

3. Maven Jar Plugin: The Jar plugin is used to package the compiled code into a JAR file. It can include dependencies and generate a manifest file.

4. Maven War Plugin: The War plugin is used to package the compiled code into a WAR file. It can include dependencies and generate a web.xml file.

5. Maven Assembly Plugin: The Assembly plugin is used to create custom distributions of the project. It can package multiple artifacts into a single distribution, and can include scripts and configuration files.

6. Maven Release Plugin: The Release plugin is used to automate the release process for the project. It can create a release branch, update the version number, build and test the release, and deploy the release to a repository.

7. Maven Deploy Plugin: The Deploy plugin is used to deploy the project to a remote repository, such as Maven Central. It can also generate and sign PGP signatures for the artifacts.

8. Maven Site Plugin: The Site plugin is used to generate project documentation, such as JavaDoc or project reports. It can also generate a project website with documentation and reports.

These are just a few of the many plugins available for Maven. Plugins can be configured in the POM file or on the command line, and can be used to customize the build process to meet the needs of the project.