SonarQube Has a Free Code Quality Platform — Catch Bugs, Vulnerabilities, and Code Smells Automatically

SonarQube Has a Free Code Quality Platform — Catch Bugs, Vulnerabilities, and Code Smells Automatically Code reviews catch some issues. Linters catch others. SonarQube catches what both miss — deep static analysis that finds bugs, security vulnerabilities, and maintainability issues across your entire codebase. Free Tier (Community Edition) Unlimited projects (self-hosted) 30+ languages supported Thousands of rules for bugs, vulnerabilities, code smells Quality Gates — block merges if quality drops CI/CD integration — GitHub Actions, GitLab CI, Jenkins SonarCloud — free for open source projects (hosted version) What SonarQube Catches // BUG: Comparing with = instead of == if ( user . role = ' admin ' ) { // SonarQube flags this grantAccess (); } // VULNERABILITY: SQL Injection const query = `SELECT * FROM users WHERE id = ${ req . params . id } ` ; // Fix: Use parameterized queries // CODE SMELL: Cognitive complexity too high function processOrder ( order ) { if ( order . items ) { for