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Head-to-head · Debuggers

GDB vs LLDB

  • 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
LLDB #2 in Debuggers 9.2/10 Free plan Free plan✓ 4 of 5 features Visit LLDB

GDB leads on 1 check, LLDB on 0, and 5 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
  • Most featuresGDB · 5 of 5

GDB scores higher on our rubric for debuggers: 9.4 against 9.2 out of 10; our editors rank them #1 and #2.

GDB offers time-travel debugging; LLDB doesn't.

GDB is the better fit for broad native and systems debugging. LLDB is the better fit for C/C++ and Apple-platform debugging.

  • GDB fits best

    Broad native and systems debugging

  • LLDB fits best

    C/C++ and Apple-platform debugging

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Side by side

Feature GDB 9.4/10 Visit ↗ LLDB 9.2/10 Visit ↗
At a glance
Editor score 9.4 9.2
Ranking #1 in Debuggers #2 in Debuggers
Best for Broad native and systems debugging C/C++ and Apple-platform debugging
Pricing model Free Free
Starting price Free plan Free plan
Free plan ✓ ✓
Free trial — —
Deployment Desktop Self-hosted, Desktop
Platforms Windows, macOS, Linux Windows, macOS, Linux, iOS
Support Community, Docs Docs, Community
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features GDB 5/5 · LLDB 4/5
Remote debugging ✓ ✓
Conditional breakpoints ✓ ✓
Exception breakpoints ✓ ✓
Time-travel debugging ✓ (best) —
Core dump debugging ✓ ✓
Specs
Supported languages Ada, Assembly, C, C++, D, Fortran, Go, Objective-C, OpenCL, Modula-2, Pascal, Rust C, C++, Objective-C, Objective-C++
Target platforms UNIX, Microsoft Windows, macOS; native, remote, and simulator targets macOS, iOS, tvOS, watchOS, Linux, FreeBSD, NetBSD, Windows, Android
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
  • Native debugging for C, C++, Objective-C and Objective-C++
  • Remote, core-file and conditional-breakpoint support
  • Integrates with Xcode, LLVM, Clang and VS Code via lldb-dap
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
  • Narrower language coverage than multi-language debuggers
  • No time travel debugging
  • Distributed through toolchains and IDEs rather than as a standalone commercial product
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 →

LLDB is an open-source debugger from the LLVM Project for developers working with C, C++, Objective-C and Objective-C++. It supports macOS, iOS, tvOS, watchOS, Linux, FreeBSD, NetBSD, Windows and Android targets, with distributions…

Read the review →
  1. GDBDebuggers 9.4Free plan
  2. LLDBDebuggers 9.2Free 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

  • LLDB — where it wins

    • Native debugging for C, C++, Objective-C and Objective-C++
    • Remote, core-file and conditional-breakpoint support
    • Integrates with Xcode, LLVM, Clang and VS Code via lldb-dap

    Where it doesn't

    • Narrower language coverage than multi-language debuggers
    • No time travel debugging
    • Distributed through toolchains and IDEs rather than as a standalone commercial product

More comparisons

All debuggers comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update