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NoKill is a Windows utility from publisher Mstrx, currently at version 0.1.0 with one released version, categorized as a diagnostic and system rescue tool for handling frozen applications. Its purpose is to recover Windows programs that freeze or display a "Not Responding" state, operating on the principle that terminating the process is a last resort rather than a first response. The software detects hung applications using conservative multi-signal scoring, which reduces the risk of misidentifying temporarily busy programs as frozen. Once a hang is detected, NoKill can reveal hidden modal dialogs that are blocking an application's main window, a common cause of apparent freezes, and it diagnoses the underlying problem through Wait Chain Traversal, including deadlock detection that identifies cases where processes are waiting on each other indefinitely. A central feature is its evidence preservation workflow: before any action touches the affected process, NoKill stores rescue evidence into a local Recovery Vault, including reports, screenshots, wait chain data, minidumps, and app recovery artifacts, giving users and support staff a forensic record of each incident. For unattended protection, a background watchdog with a tray guardian mode automatically captures and preserves this evidence the moment an application is confirmed frozen, and a local freeze history logs which applications freeze most frequently, helping users identify recurring problem software over time. Typical use cases include troubleshooting unstable desktop applications, gathering diagnostic material for bug reports or technical support, and rescuing work from hung programs without immediately resorting to force termination. The tool follows a local-first privacy model: it collects no telemetry, and its only outbound network call is an optional update check, keeping all diagnostic data and freeze records on the user's own machine.
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