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Head-to-head · Debuggers

GDB vs WinDbg

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score GDB #1 in Debuggers 9.4/10 Free plan Free plan✓ 5 of 5 features Visit GNU Project
WinDbg #3 in Debuggers 9.0/10 Free plan Free plan✓ 5 of 5 features Visit Microsoft

GDB leads on 0 checks, WinDbg 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 scoreGDB · 9.4/10
  • Free planboth

GDB scores higher on our rubric for debuggers: 9.4 against 9.0 out of 10; our editors rank them #1 and #3.

GDB is the better fit for broad native and systems debugging. WinDbg is the better fit for windows and kernel debugging.

  • GDB fits best

    Broad native and systems debugging

  • WinDbg fits best

    Windows and kernel debugging

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Side by side

Feature GDB 9.4/10 Visit ↗ WinDbg 9.0/10 Visit ↗
At a glance
Editor score 9.4 9.0
Ranking #1 in Debuggers #3 in Debuggers
Best for Broad native and systems debugging Windows and kernel debugging
Pricing model Free Free
Starting price Free plan Free plan
Free plan ✓ ✓
Free trial — —
Deployment Desktop Desktop
Platforms Windows, macOS, Linux Windows
Support Community, Docs Docs
Built for Solo, Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features GDB 5/5 · WinDbg 5/5
Remote debugging ✓ ✓
Conditional breakpoints ✓ ✓
Exception breakpoints ✓ ✓
Time-travel debugging ✓ ✓
Core dump debugging ✓ ✓
Specs
Supported languages Ada, Assembly, C, C++, D, Fortran, Go, Objective-C, OpenCL, Modula-2, Pascal, Rust C++, C#, JavaScript, assembly
Target platforms UNIX, Microsoft Windows, macOS; native, remote, and simulator targets Windows; Linux crash dumps
Our review
Pros
  • Supports Ada, C, C++, Go, Rust, Fortran, Pascal, and assembly
  • Includes remote debugging, core dumps, and simulator targets
  • Offers reverse execution, replay, and program-state modification
  • 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
Cons
  • No AI-assisted debugging features
  • Remote debugging uses serial, socket, TCP, or UDP connections
  • Its language coverage centers on native and systems-oriented development
  • 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
Our verdict

GDB is a free, open-source source-level debugger for examining programs while they run or after they crash. It is aimed at developers working across native applications, systems software, embedded or remote targets, and simulator…

Read the review →

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 →
  1. GDBDebuggers 9.4Free plan
  2. WinDbgDebuggers 9.0Free plan

Strengths and trade-offs

  • GDB — where it wins

    • Supports Ada, C, C++, Go, Rust, Fortran, Pascal, and assembly
    • Includes remote debugging, core dumps, and simulator targets
    • Offers reverse execution, replay, and program-state modification

    Where it doesn't

    • No AI-assisted debugging features
    • Remote debugging uses serial, socket, TCP, or UDP connections
    • Its language coverage centers on native and systems-oriented development

  • 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

More comparisons

All debuggers comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update