GDB vs UDB

GDB9.4Visit UDB8.0Visit

Higher score GDB #1 in Debuggers 9.4/10 Free plan Free plan✓ 5 of 5 features Visit GNU Project

vs

UDB #10 in Debuggers 8.0/10 Pricing on request ✓ 5 of 5 features Visit Undo

• GDB fits best

  Broad native and systems debugging

• UDB fits best

  Linux C/C++ reverse debugging

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Side by side

Feature	GDB 9.4/10 Visit ↗	UDB 8.0/10 Visit ↗
At a glance
Editor score	9.4	8.0
Ranking	#1 in Debuggers	#10 in Debuggers
Best for	Broad native and systems debugging	Linux C/C++ reverse debugging
Pricing model	Free	Paid
Starting price	Free plan	—
Free plan	✓ (best)	—
Free trial	—	—
Deployment	Desktop	Self-hosted
Platforms	Windows, macOS, Linux	Linux
Support	Community, Docs	Email, Community, Docs
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features GDB 5/5 · UDB 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++
Target platforms	UNIX, Microsoft Windows, macOS; native, remote, and simulator targets	Linux
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	Replays recorded execution forward or backward Supports core dumps, remote debugging, and GDB compatibility Integrates with VS Code, CLion, Eclipse, and Emacs
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	Supports Linux rather than multiple operating systems No general free plan for ongoing use Enterprise package pricing requires contacting sales
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 →	UDB is an interactive debugger for developers working with Linux C and C++ applications. Its central capability is recorded program history: developers can replay execution forward or backward while inspecting variables and memory. It also… Read the review →

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

• UDB — where it wins

  • Replays recorded execution forward or backward
  • Supports core dumps, remote debugging, and GDB compatibility
  • Integrates with VS Code, CLion, Eclipse, and Emacs

  Where it doesn't

  • Supports Linux rather than multiple operating systems
  • No general free plan for ongoing use
  • Enterprise package pricing requires contacting sales

• GDB9.4/10 · Free plan

  A free, open-source debugger with unusually broad language, target, and remote-debugging coverage.

  Visit GNU ProjectFull verdict →
• UDB8.0/10 · Pricing on request

  A Linux C/C++ debugger built around recorded forward and reverse execution.

  Visit UndoFull verdict →