LLDB vs UDB

LLLDB9.2Visit UDB8.0Visit

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

vs

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

• LLDB fits best

  C/C++ and Apple-platform debugging

• UDB fits best

  Linux C/C++ reverse debugging

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature	LLLDB 9.2/10 Visit ↗	UDB 8.0/10 Visit ↗
At a glance
Editor score	9.2	8.0
Ranking	#2 in Debuggers	#10 in Debuggers
Best for	C/C++ and Apple-platform debugging	Linux C/C++ reverse debugging
Pricing model	Free	Paid
Starting price	Free plan	—
Free plan	✓ (best)	—
Free trial	—	—
Deployment	Self-hosted, Desktop	Self-hosted
Platforms	Windows, macOS, Linux, iOS	Linux
Support	Docs, Community	Email, Community, Docs
Integrations	4 integrations	4 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features LLDB 4/5 · UDB 5/5
Remote debugging	✓	✓
Conditional breakpoints	✓	✓
Exception breakpoints	✓	✓
Time-travel debugging	—	✓ (best)
Core dump debugging	✓	✓
Specs
Supported languages	C, C++, Objective-C, Objective-C++	C, C++
Target platforms	macOS, iOS, tvOS, watchOS, Linux, FreeBSD, NetBSD, Windows, Android	Linux
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	Replays recorded execution forward or backward Supports core dumps, remote debugging, and GDB compatibility Integrates with VS Code, CLion, Eclipse, and Emacs
Cons	Narrower language coverage than multi-language debuggers No time travel debugging Distributed through toolchains and IDEs rather than as a standalone commercial product	Supports Linux rather than multiple operating systems No general free plan for ongoing use Enterprise package pricing requires contacting sales
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 →	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

• 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

• 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

• LLLDB9.2/10 · Free plan

  A capable, free debugger for C/C++ and Apple-platform development.

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

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

  Visit UndoFull verdict →