UDB

UDB is ranked #8 of 27 in debuggers on The Geeks Club. It runs on Browser extension, Linux. There is no free plan. A free trial is offered.

UDB plans and pricing

All plans

Land and Prove Program $50,000 once $50K program entry fee · unlimited development access for 6 months · development and CI environments; production debugging priced after assessment undo.io · 3 Oct 2026

Compared on debuggers

Free plan: No
Supported languages: C, C++
Target platforms: Linux
Remote debugging: Yes
Conditional breakpoints: Yes
Exception breakpoints: Yes
Time-travel debugging: Yes
Core dump debugging: Yes

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UDB

Purpose: UDB is an interactive time travel debugger for Linux C/C++ that records program execution so developers can replay it and inspect state.
Debugging: UDB supports forward and reverse execution with variable and memory inspection, scripting, conditional breakpoints, and watchpoints.
Workflow: Users can launch a program in UDB or attach it to a running process.
GDB compatibility: Undo says UDB is 100% compatible with GDB and adds a handful of commands for time travel debugging.
IDE integrations: The product page names Visual Studio Code, CLion, Eclipse, and Emacs integrations; the Eclipse guide labels that integration experimental.
AI debugging: UDB's explain command lets an AI coding assistant drive the debugger using an Undo recording to investigate a problem.
Setup: Undo says UDB requires no compilation or build changes and no kernel or system configuration.
Supported environment: The documented engine requires 64-bit Linux and supports 32-bit and 64-bit x86 processes with standard license configurations; ARM support is opt-in.
Operating system limit: The engine does not support non-Linux operating systems such as Windows or macOS.
Kernel-space limit: UDB supports user-space code only, not kernel-space code.
Trial: Undo offers a free trial, but the pages opened here do not state its duration.
Security and evaluation: Undo says customers can evaluate UDB within their firewall without sending anything externally.
Team support: The enterprise team package includes white-glove support with direct access to Undo's engineering team.
Intended users: Undo describes UDB as suited to individual developers and highlights race conditions, deadlocks, memory corruption, segfaults, and stack corruption as debugging use cases.

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Where it ranks on The Geeks Club

Best Debuggers in 2026#8 of 27

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Sources

undo.io/products/udb/· checked 3 Oct 2026
docs.undo.io/SystemRequirements.html· checked 3 Oct 2026
undo.io/pricing-licensing/· checked 3 Oct 2026