Free SonarQube Alternatives

The best free alternative to SonarQube is Codacy. It's not free, so if you're looking for a free alternative, you could try Cppcheck or Shellcheck. If that doesn't suit you, our users have ranked more than 25 alternatives to SonarQube and 17 is free so hopefully you can find a suitable replacement. Other interesting free alternatives to SonarQube are PhpMetrics, Code Climate, DeepSource and Coverity Scan.

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SonarQube

Freemium • Open Source

Mac
Windows
Linux
Online

SonarQube is an open source quality management platform, dedicated to continuously analyze and measure source code quality,...

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Codacy
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Free Personal • Open Source
Online
Self-Hosted
Software as a Service (SaaS)
47 alternatives to Codacy
Codacy automates code reviews and monitors code quality on every commit and pull request reporting back the impact of every commit or pull request, issues concerning code style, best practices, security, and many others.
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Codacy Features
Code Quality
Static analysis
Ruby
Reporting
KPI Dashboard
Test automation
Java based
Test Management Tool
Static Code Analysis
Codacy vs SonarQube opinions
Almost everyone thinks Codacy is a great alternative to SonarQube.
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Measure evaluation of the code quality over time.
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Cppcheck
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Free • Open Source
Windows
Linux
PortableApps.com
Eclipse
16 alternatives to Cppcheck
Cppcheck is an static analysis tool for C/C++ code. Unlike C/C++ compilers and many other analysis tools it does not detect syntax errors in the code. Cppcheck primarily detects the types of bugs that the compilers normally do not detect.
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Cppcheck Features
1. PortableCppcheck can be used from a USB stick or similar with no prior installation.
C++
Shellcheck
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No
Free • Open Source
Online
GNU Emacs
Vim
Sublime Text
Atom
Code - OSS (vscode)
Visual Studio Code
16 alternatives to Shellcheck
A simple tool for finding bugs in shell scripts.
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Shellcheck Features
Static Code Analysis
Security Testing
Metrics
Coding
PhpMetrics
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No
Free • Open Source
Self-Hosted
5 alternatives to PhpMetrics
PhpMetrics provides metrics about PHP project and classes, with beautiful and readable HTML report.
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PhpMetrics Features
Metrics
Static Code Analysis
Code Climate
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Freemium • Proprietary
Online
31 alternatives to Code Climate
Code Climate consolidates the results from a suite of static analysis tools into a single, real-time report, giving your team the information it needs to identify hotspots, evaluate new approaches, and improve code quality.
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Code Climate Features
C++ support
Code Quality
Ruby
DeepSource
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No
Freemium • Proprietary
Online
Software as a Service (SaaS)
CircleCI
Bitbucket
GitHub
Travis CI
GitLab
8 alternatives to DeepSource
Find and fix bug risks, anti-patterns, performance issues, security flaws automatically during code reviews. In addition, DeepSource automatically fixes some of the most commonly occurring issues. It works for Python, Go, Ruby, and JavaScript.
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DeepSource Features
Code review
Automated reviews
Static Code Analysis
Coverity Scan
Do you think this is a good alternative?
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No
Freemium • Proprietary
Mac
Windows
Linux
Online
BSD
16 alternatives to Coverity Scan
Coverity Scan Static Analysis allows to find and fix defects in your Java, C/C++ or C# open source project for free.
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Coverity Scan Features
Debugging
C++
Static Code Analysis
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Flawfinder
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Free • Open Source
Windows
Linux
11 alternatives to Flawfinder
Flawfinder examines C/C++ source code and reports possible security weaknesses ("flaws'') sorted by risk level. It's very useful for quickly finding and removing at least some potential security problems before a program is widely released to the public.
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Flawfinder Features
C++
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SensioLabs Insight
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No
Freemium • Proprietary
Online
16 alternatives to SensioLabs Insight
SensioLabsInsight is a quality assurance tool that analyzes your source code to find problems that degrade the overall quality of your projects. It can analyze any application developed with PHP, but it's specially designed to perform advanced analysis of Symfony2...
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SensioLabs Insight Features
Code Quality
Security Testing
Landscape (Python)
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No
Free Personal • Proprietary
Online
17 alternatives to Landscape (Python)
Landscape is an early warning system for the Python codebase. It integrates into GitHub, uses the Prospector code analysis tool for Python, and aggregates the analysis results nicely.
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Landscape (Python) Features
Code Quality