Xdebug vs CUDA-GDB

Xdebug8.6Visit CUDA-GDB8.3Visit

Higher score Xdebug #5 in Debuggers 8.6/10 Free plan Free plan✓ 3 of 5 features Visit Xdebug

vs

CUDA-GDB #8 in Debuggers 8.3/10 Open source ✓ 3 of 5 features Visit NVIDIA

• Xdebug fits best

  PHP web application debugging

• CUDA-GDB fits best

  CUDA CPU/GPU debugging

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Side by side

Feature	Xdebug 8.6/10 Visit ↗	CUDA-GDB 8.3/10 Visit ↗
At a glance
Editor score	8.6	8.3
Ranking	#5 in Debuggers	#8 in Debuggers
Best for	PHP web application debugging	CUDA CPU/GPU debugging
Pricing model	Free plan + paid	Free
Starting price	£200/user/yr	Open source
Free plan	✓ (best)	Not checked yet
Free trial	—	—
Deployment	Self-hosted	Desktop
Platforms	Web, Windows, macOS, Linux	Linux
Support	Email, Community, Docs	Email, Community, Docs
Integrations	6 integrations	4 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features Xdebug 3/5 · CUDA-GDB 3/5
Remote debugging	✓	✓
Conditional breakpoints	✓	✓
Exception breakpoints	✓ (best)	Not checked yet
Time-travel debugging	Not checked yet	Not checked yet
Core dump debugging	Not checked yet	✓ (best)
Specs
Supported languages	PHP	C/C++, Fortran
Target platforms	Linux, macOS, Windows, web/CLI PHP environments	Linux, QNX
Our review
Pros	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	Debugs CPU and GPU code simultaneously Supports CUDA C/C++, Fortran, remote sessions, and core dumps Inspects GPU state across multi-GPU debugging sessions
Cons	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	Focused on NVIDIA GPU development Listed platform coverage centers on Linux Command-line workflow may not suit every development team
Our verdict	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 →	CUDA-GDB is NVIDIA's open-source extension to the GNU Project Debugger for debugging CUDA applications on actual NVIDIA hardware. It is aimed at developers working with CUDA C/C++, CUDA Fortran, and mixed CPU/GPU programs who need one… Read the review →

Strengths and trade-offs

• 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

• CUDA-GDB — where it wins

  • Debugs CPU and GPU code simultaneously
  • Supports CUDA C/C++, Fortran, remote sessions, and core dumps
  • Inspects GPU state across multi-GPU debugging sessions

  Where it doesn't

  • Focused on NVIDIA GPU development
  • Listed platform coverage centers on Linux
  • Command-line workflow may not suit every development team

• Xdebug8.6/10 · Free plan

  A focused PHP debugger with remote sessions, profiling, tracing, and coverage analysis.

  Visit XdebugFull verdict →
• CUDA-GDB8.3/10 · Open source

  A capable open-source debugger for inspecting CUDA CPU and GPU execution together.

  Visit NVIDIAFull verdict →