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Best Code Complexity Analyzers in 2026

Code complexity analyzers measure software complexity and can show metrics, hotspots, IDE feedback, pull-request gates or trend history. This list is for developers and teams comparing ways to review code structure and change over time.

  1. 1

    CodeScene

    Free plan APILinuxSelf-hosted+1

    CodeScene combines code-quality analysis with insight into team knowledge and software delivery.

    7.5 Free plan · paid from €18/mo (annual) · 14-day trial Visit site
  2. 2

    Codacy

    Free plan ExtensionWeb

    Codacy brings code review, security scanning, and coding standards into a cloud platform for engineering teams.

    7.3 Free plan · paid from $18/user/mo (annual) · 14-day trial Visit site
  3. 3

    PMD

    Free plan LinuxMacSelf-hosted+1

    PMD combines broad language coverage, custom rules, and bundled duplicate detection without a listed price. Check language-specific rule coverage and version support before adopting it.

    7.2 Free plan Visit site
  4. 4

    Qlty Cloud

    Free plan APIExtensionLinux+3

    Qlty Cloud combines code analysis, pull-request feedback, and coverage workflows. Compare the monthly analysis and autofix allowances with your team's usage before choosing a plan.

    7.1 Free plan · paid from $20/mo Visit site
  5. 5

    Qodana

    Free plan APIExtensionLinux+4

    Qodana combines code analysis, pipeline gates, and multiple deployment options. Its contributor-based licensing minimum is worth factoring into plan selection.

    7.1 Free plan · 30-day trial Visit site
  6. 6

    Understand

    Free plan APIExtensionLinux+3

    Choose Understand if you need static code analysis and navigation across its supported languages, or need command-line, CI, self-hosted or offline workflows.

    6.9 Free plan · paid from $100/user/mo (annual) Visit site
  7. 7

    CAST Highlight

    Free trial APILinuxMac+2

    Choose CAST Highlight if your organization needs portfolio-level analysis of custom applications across software risk, cloud readiness, open-source risks or AI opportunities.

    6.6 14-day trial Visit site
  8. 8

    Visual Studio

    Free plan APIWindows

    Visual Studio brings development, debugging, testing, GitHub, and Azure workflows into a Windows IDE.

    6.6 Free plan · paid from $45/user/mo Visit site
  9. 9

    cccc

    Free plan LinuxMacWindows
    6.4 Free plan Visit site
  10. 10

    Code Complexity

    Free plan LinuxMacWindows
    6.3 Free plan Visit site
  11. 11

    Code Inspector

    Free plan LinuxMacWindows
    6.3 Free plan Visit site
  12. 12

    CognitiveAnalyzer

    Free plan LinuxMacWindows
    6.2 Free plan Visit site
  13. 13

    NDepend

    Free trial APIExtensionLinux+2

    NDepend brings static analysis, architecture views, quality gates, reporting, and CI integrations to .NET codebases.

    6.1 14-day trial Visit site
  14. 14

    Lizard

    Free plan LinuxMacWindows
    6.0 Free plan Visit site
  15. 15

    complexity

    Free plan Mac
    5.8 Free plan Visit site
  16. 16

    sccache

    Free plan LinuxMacWindows
    5.8 Free plan Visit site
  17. 17

    Cognitive Code Analysis

    Free plan
    5.7 Free plan Visit site
  18. 18

    SourceMeter

    Paid LinuxWindows
    4.1 Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

Compare free plans, paid starting prices, trial terms, supported languages and the platform you use. If reading or changing source code matters, check the licence before choosing. Review how the tool fits your IDE, API, extension or web workflow.

Questions

Do these analyzers have free plans?

Plans include free, freemium and paid models. Check the pricing note for the tool you are considering.

Which tools list a 14-day trial?

CAST Highlight, Codacy, CodeScene and NDepend list 14-day trials.

Which platforms are covered?

Listed platforms include Linux, Windows, macOS, API, extension and web.

What can I compare between tools?

The comparison covers free plan, paid starting price, complexity metrics, supported languages, hotspot detection, IDE feedback, pull-request gates and trend history.

How do I check whether I can modify the code?

Review the tool's licence terms before choosing if you need to read or change its source code.

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