Abacus - Estimates the complexity of each file in order to help you use the "abacus methodology".
Artifact Size - Reports on the size of the artifact generated by a project.
Build Stability - Reports on stability of project build using data from your Continuous Integration engine.
JMeter - Displays JMeter test results in SonarQube.
Mantis - Retrieves and reports the number of project issues from Mantis.
Pitest - Integration with PIT, which is a mutation testing tool for Java.
Security Rules - Allows a more prominent reporting of security-related issues to help you keep them under control.
Taglist - Generates a report on various tags found in the code, like
Thucydides - Reports on Thucydides (acceptance tests tool) metrics.
Trac - Retrieves and reports the number of project issues from a Trac instance.
Useless Code Tracker Plugin - Reports on the number of lines that can be reduced in an application.
Violation Density - Computes a new metric named violation density. This is kind of "opposite" for rules compliance metric.