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Head-to-head · Debuggers

LLDB vs Xdebug

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score LLDB #2 in Debuggers 9.2/10 Free plan Free plan✓ 4 of 5 features Visit LLDB
Xdebug #5 in Debuggers 8.6/10 Free plan Free plan✓ 3 of 5 features Visit Xdebug

LLDB 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 scoreLLDB · 9.2/10
  • Free planboth
  • Most featuresLLDB · 4 of 5

LLDB scores higher on our rubric for debuggers: 9.2 against 8.6 out of 10; our editors rank them #2 and #5.

LLDB is the better fit for C/C++ and Apple-platform debugging. Xdebug is the better fit for PHP web application debugging.

  • LLDB fits best

    C/C++ and Apple-platform debugging

  • Xdebug fits best

    PHP web application debugging

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Side by side

Feature LLDB 9.2/10 Visit ↗ Xdebug 8.6/10 Visit ↗
At a glance
Editor score 9.2 8.6
Ranking #2 in Debuggers #5 in Debuggers
Best for C/C++ and Apple-platform debugging PHP web application debugging
Pricing model Free Free plan + paid
Starting price Free plan £200/user/yr
Free plan ✓ ✓
Free trial — —
Deployment Self-hosted, Desktop Self-hosted
Platforms Windows, macOS, Linux, iOS Web, Windows, macOS, Linux
Support Docs, Community Email, Community, Docs
Integrations 4 integrations 6 integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features LLDB 4/5 · Xdebug 3/5
Remote debugging ✓ ✓
Conditional breakpoints ✓ ✓
Exception breakpoints ✓ ✓
Time-travel debugging — Not checked yet
Core dump debugging ✓ (best) Not checked yet
Specs
Supported languages C, C++, Objective-C, Objective-C++ PHP
Target platforms macOS, iOS, tvOS, watchOS, Linux, FreeBSD, NetBSD, Windows, Android Linux, macOS, Windows, web/CLI PHP environments
Our review
Pros
  • 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
  • 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
  • Narrower language coverage than multi-language debuggers
  • No time travel debugging
  • Distributed through toolchains and IDEs rather than as a standalone commercial product
  • 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

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 →

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. LLDBDebuggers 9.2Free plan
  2. XdebugDebuggers 8.6Free plan

Strengths and trade-offs

  • 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

  • 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