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Head-to-head · Debuggers

WinDbg vs Xdebug

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score WinDbg #3 in Debuggers 9.0/10 Free plan Free plan✓ 5 of 5 features Visit Microsoft
Xdebug #5 in Debuggers 8.6/10 Free plan Free plan✓ 3 of 5 features Visit Xdebug

WinDbg leads on 0 checks, Xdebug on 0, and 6 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreWinDbg · 9.0/10
  • Free planboth
  • Most featuresWinDbg · 5 of 5

WinDbg scores higher on our rubric for debuggers: 9.0 against 8.6 out of 10; our editors rank them #3 and #5.

WinDbg is the better fit for windows and kernel debugging. Xdebug is the better fit for PHP web application debugging.

  • WinDbg fits best

    Windows and kernel debugging

  • Xdebug fits best

    PHP web application debugging

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Side by side

Feature WinDbg 9.0/10 Visit ↗ Xdebug 8.6/10 Visit ↗
At a glance
Editor score 9.0 8.6
Ranking #3 in Debuggers #5 in Debuggers
Best for Windows and kernel debugging PHP web application debugging
Pricing model Free Free plan + paid
Starting price Free plan £200/user/yr
Free plan ✓ ✓
Free trial — —
Deployment Desktop Self-hosted
Platforms Windows Web, Windows, macOS, Linux
Support Docs Email, Community, Docs
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features WinDbg 5/5 · Xdebug 3/5
Remote debugging ✓ ✓
Conditional breakpoints ✓ ✓
Exception breakpoints ✓ ✓
Time-travel debugging ✓ (best) Not checked yet
Core dump debugging ✓ (best) Not checked yet
Specs
Supported languages C++, C#, JavaScript, assembly PHP
Target platforms Windows; Linux crash dumps Linux, macOS, Windows, web/CLI PHP environments
Our review
Pros
  • Combines user-mode and kernel-mode debugging for Windows code and drivers
  • Supports crash dumps, remote sessions, and configurable exception handling
  • Time Travel Debugging records and replays execution for deeper analysis
  • Interactive and remote debugging with conditional and exception breakpoints
  • Profiling, tracing, stack traces, and code coverage in one PHP extension
  • Works with Visual Studio Code, PhpStorm, Eclipse, and other listed tools
Cons
  • Its primary focus is Windows rather than cross-platform debugging
  • Linux support centers on kernel and ELF core-dump analysis
  • The broad feature set may be more than basic application debugging requires
  • Focused on PHP rather than multi-language debugging
  • Advanced support requires a paid annual subscription
  • The Community plan provides low issue priority and Stack Overflow support
Our verdict

WinDbg is Microsoft’s debugger for live user-mode and kernel-mode code, crash dumps, and minidumps. It is aimed at software developers, driver developers, system engineers, and incident investigators working with Windows applications,…

Read the review →

Xdebug is an open-source PHP extension for developers who need more than basic error messages. It supports interactive step debugging through an IDE or editor, remote debugging connections, conditional and exception breakpoints, enhanced…

Read the review →
  1. WinDbgDebuggers 9.0Free plan
  2. XdebugDebuggers 8.6Free plan

Strengths and trade-offs

  • WinDbg — where it wins

    • Combines user-mode and kernel-mode debugging for Windows code and drivers
    • Supports crash dumps, remote sessions, and configurable exception handling
    • Time Travel Debugging records and replays execution for deeper analysis

    Where it doesn't

    • Its primary focus is Windows rather than cross-platform debugging
    • Linux support centers on kernel and ELF core-dump analysis
    • The broad feature set may be more than basic application debugging requires

  • Xdebug — where it wins

    • Interactive and remote debugging with conditional and exception breakpoints
    • Profiling, tracing, stack traces, and code coverage in one PHP extension
    • Works with Visual Studio Code, PhpStorm, Eclipse, and other listed tools

    Where it doesn't

    • Focused on PHP rather than multi-language debugging
    • Advanced support requires a paid annual subscription
    • The Community plan provides low issue priority and Stack Overflow support

More comparisons

All debuggers comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update