The most common Jenkins plugins are:
1. Git Plugin: This plugin allows you to connect to a Git repository and build from source code managed by Git.
2. Maven Plugin: This plugin allows you to build projects using Apache Maven and manage dependencies.
3. Slack Notification Plugin: This plugin allows you to configure notifications for build results in your Slack channels.
4. Email Extension Plugin: This plugin allows you to configure email notifications for build results.
5. SonarQube Scanner Plugin: This plugin allows you to analyze your projects with SonarQube and generate reports.
6. Artifactory Plugin: This plugin allows you to deploy artifacts to an Artifactory repository.
7. Copy Artifact Plugin: This plugin allows you to copy artifacts from one job to another.
8. Jenkins Job DSL Plugin: This plugin allows you to create jobs programmatically.
9. Pipeline Plugin: This plugin allows you to define pipelines as code and execute them.
10. Build Timeout Plugin: This plugin allows you to set a timeout on build jobs.