LegitX V2 is a Windows mouse sensitivity and input-tuning utility for gamers. It combines low-level mouse input, configurable sensitivity profiles, movement prediction, overlay controls, and optional Windows registry presets in a C# WinForms application targeting .NET Framework 4.8.1. The project is useful for people searching for an open-source Windows mouse smoother, anti-jitter tool, DPI and sensitivity profile manager, or emulator input optimizer.
The project is being prepared for transparent open-source development. The application does not contain a credential grabber, browser-password reader, cookie stealer, keylogger, webhook uploader, or background data exfiltration path in the reviewed source. The original code did contain anti-analysis checks, self-delete behavior, remote unsigned batch downloads, and forensic-log cleanup scripts. Those publication blockers were removed from this build. Read the security review before distributing binaries.
- Captures mouse input through Windows low-level hooks and applies configurable sensitivity processing.
- Uses movement prediction to smooth fast input changes and reduce jitter.
- Provides an always-on-top overlay and foreground-window awareness.
- Stores user preferences and applies optional registry presets after an explicit confirmation.
- Includes emulator, display, RAM, CPU, network, and driver controls where the underlying operation is visible and documented.
- Runs as a single Windows desktop process and requires administrator rights for system-wide registry and input changes.
LegitX V2 does not collect credentials, read browser stores, monitor clipboard contents, upload files, install persistence, or silently contact a licensing server. The remaining network actions are user-triggered links and availability checks for downloads shown in the UI. The application can change Windows settings and start documented system tools; review those actions before enabling an optimizer.
- Windows 10 or Windows 11 (x64 recommended).
- .NET Framework 4.8.1.
- Visual Studio 2022 with the .NET desktop workload, or MSBuild with the .NET Framework 4.8.1 targeting pack.
dotnet msbuild "LegitX V2.csproj" /t:Build /p:Configuration=Release /v:minimalThe output is written to bin\Release. Build Debug when developing and Release when producing a reviewable artifact. Do not publish a binary until you have reviewed the exact source and embedded resources being built.
Application/— application startup, prerequisite checks, and single-instance handling.UI/— the WinForms shell and generated designer code.Hooks/— Windows mouse-hook integration.Input/— sensitivity and movement processing.Services/— overlays, registry settings, and supporting services.Resources/Embedded/— reviewed registry presets and UI assets.docs/— architecture, build, security, and privacy documentation.
The program can request elevation, install low-level input hooks, modify registry values, create a temporary firewall rule, run regedit.exe for a selected preset, and invoke selected Windows networking commands. These actions are visible in the source and should be tested in a disposable Windows account or virtual machine. See SECURITY.md and PRIVACY.md for the complete data-flow description.
This project is released under the MIT License, Copyright (c) 2026 Subhjeet Singh. MIT permits use, modification, redistribution, and commercial use as long as the copyright and license notice are retained. See OPEN_SOURCE_CHECKLIST.md for the remaining release steps.
Apache-2.0 is an alternative permissive license with explicit patent protection. GPL-3.0 is a copyleft alternative that requires modified and redistributed versions to remain open source; neither is applied to this repository because a project should use one primary license.
For a repository listing, use accurate topics such as windows, winforms, csharp, mouse-sensitivity, mouse-smoothing, gaming-tools, input-latency, dpi, and dotnet-framework. Keep the description factual and link to the security review. Search ranking cannot be guaranteed, but clear terminology, useful documentation, releases, and links from related projects improve discoverability without keyword stuffing.
Please explain the user-visible effect of a change, document any Windows permission it needs, and include a build result. Security reports should follow SECURITY.md rather than being posted publicly with working exploit details.
Join the LegitX V2 Discord community for discussion, troubleshooting, and release updates.