Value
Our open source offerings are the basis of the powerful analyzers that feed every Sonar product.
Sonar • Open Source
The open source behind secure, high‑quality code.
Every Sonar project released under the GPL and LGPL: the SonarQube Server core, scanners, IDE clients, CI/CD integrations, the plugin API, and the tooling we build in the open. Backed by Sonar's Open Core commitment, freely available for everyone.
0
projects
0
categories
Developers are the heart of Sonar. These projects integrate with, extend, or are part of the SonarQube ecosystem — part of our commitment to open source and the continuous improvement it drives. Looking for the language analyzers, MCP server, and AI-era tooling? Those ship under the Sonar Source-Available License (SSAL) and are listed separately on the source-available projects page.
Sonar's solutions for open source projects
Open source projects
No projects match your filters. Reset filters.
Continuous improvement through open source
01
02
03
Sonar's pillars of open source
Our open source work is the basis of the analyzers that power every Sonar product. It's how we partner with the community, and how we keep code quality and security within reach of every developer. Backed by our Open Core commitment, Sonar solutions are freely available for everyone.
Community
Working together and challenging one another lends to stronger products. The more we challenge one another, the stronger they become.
Productivity
We support independent developers and small teams alongside the largest enterprises, with tools that are free to adopt.
Licensing
Every project listed here is open source under one of two licenses:
LGPL-3.0
GNU Lesser General Public License v3.0
The license behind most projects on this page — the SonarQube Server core, scanners, IDE clients, and the plugin API.
GPL-3.0
GNU General Public License v3.0
Used by sonarcloud-circleci-orb and the python-flask-demo sample project.
SSAL
Sonar Source-Available License
The language analyzers, MCP server, and AI-era tooling are source-available, not open source, so they aren't listed here. Browse our source-available projects →