Windows PC optimizer — 44 optimizations across 6 modules + hardware monitoring + 11 advanced tools. EN + FR, 100% local, no telemetry.
🌐 English · Français
Over the months, Windows accumulates heavy settings, useless services, telemetry, and optimizations disabled by default. Klyr bundles 40 validated tweaks across 5 modules, without installing 50 separate utilities and without sending a single byte of data over the internet.
- ⚡ Measurable: +377 3DMark points measured after the Gaming module
- 🔒 100% local: no telemetry, no tracking, no account
- ↩️ Reversible: automatic restore point + targeted backups of system files
- 📖 Open-source: you can read every line before installing
Productivity update: apply optimizations faster, clean deeper, and know what to do.
- One-click profiles — presets that apply a curated set of optimizations across modules: Gaming Mode, Max Performance, Privacy, Balanced
- Advanced UWP debloat — lists all removable Windows Store apps (checkboxes, batch uninstall, reinstallable from the Store)
- Large files & duplicates — finds the biggest files and duplicate files (SHA-256 hash), deletion to the Recycle Bin
- Actionable health report — a scan listing concrete recommendations (RAM, disk, temp, telemetry, startup, restore) with a Fix button that jumps straight to the relevant tool
KLYR v2.3.0 ─────────────────► v2.4.0
┌────────────────────────────┐ ┌────────────────────────────────────────┐
│ MODULES (5) │ │ MODULES (6) — + Privacy │
│ Gaming · Old PC · │ ──► │ Gaming · Old PC · Cleaning · │
│ Cleaning · Network · │ │ Network · Streaming · Privacy │
│ Streaming │ │ │
├────────────────────────────┤ ├────────────────────────────────────────┤
│ TOOLS (5) │ │ TOOLS (7) — + Services + Restore │
│ Uninstaller · winget · │ ──► │ … + Windows services manager │
│ Disk · Startup · │ │ + Restore point manager │
│ Browsers │ │ │
├────────────────────────────┤ ├────────────────────────────────────────┤
│ SYSTEM │ │ SYSTEM │
│ • Scheduled scans │ ──► │ • Background mode (system tray) │
│ • Auto-updater │ │ • Launch at Windows startup │
│ │ │ • Quick clean from the tray │
└────────────────────────────┘ └────────────────────────────────────────┘
In short, v2.4.0 adds a new Privacy module (telemetry, advertising ID, location, activity history… all reversible), two new reversible system tools (Windows services manager and restore point manager), and a background mode (notification-area icon, one-click quick clean, launch at Windows startup).
KLYR v2.2.0 ─────────────────► v2.3.0
┌────────────────────────────┐ ┌────────────────────────────────────────┐
│ DASHBOARD │ │ DASHBOARD │
│ • CPU % / RAM % / Disk │ ──► │ • Circular Performance Score gauge │
│ │ │ • GPU card (name / usage / temperature)│
│ │ │ • Live disk speed │
├────────────────────────────┤ ├────────────────────────────────────────┤
│ MODULES (5) │ │ MODULES (5) — unchanged │
│ Gaming · Old PC · │ ══ │ Gaming · Old PC · Cleaning · │
│ Cleaning · Network · │ │ Network · Streaming │
│ Streaming │ │ │
├────────────────────────────┤ ├────────────────────────────────────────┤
│ TOOLS │ │ TOOLS (+5 integrated as tabs) │
│ Terminal │ ──► │ Terminal · Uninstaller · winget upd. │
│ │ │ · Disk Analyzer · Startup · │
│ │ │ Browsers │
├────────────────────────────┤ ├────────────────────────────────────────┤
│ SYSTEM │ │ SYSTEM │
│ • Resizable window │ ──► │ • Sidebar: active state + scrollable │
│ • FR / EN │ │ • Scheduled scans (Task Scheduler) │
│ │ │ • GitHub auto-updater (opt-out) │
│ │ │ • Auto-restart on language change │
└────────────────────────────┘ └────────────────────────────────────────┘
4 tool modules real-time hardware monitoring
+ 5 tools inspired by Kudu/VoltAir
In short: v2.2.0 was an optimizer (5 modules). v2.3.0 becomes a full suite — real-time hardware monitoring (temperatures, Performance Score), 5 new integrated tools (uninstaller, winget, disk analyzer, startup, browsers), scheduled scans, and automatic updates.
- Download the latest release from Releases →
Klyr_Setup_v2.3.0.exe - Run the installer
- The app installs to
C:\Program Files\Klyrand a Desktop shortcut is created
The installer bundles the .NET 10 runtime — no prerequisite on the target machine.
Klyr is not signed with an EV certificate. Windows SmartScreen may show:
"Windows protected your PC"
This is normal for any unsigned app. To continue:
- Click "More info"
- Click "Run anyway"
If Defender blocks the download: add the download folder to the exclusions, or download again.
| Module | Count | Highlights |
|---|---|---|
| Gaming / FPS | 8 | High-perf power plan, Game DVR off, FPS unlock, HAGS, kill parasitic processes |
| Old PC | 7 | Disable startup programs, animations, Win32 RAM cleanup, smart SSD/HDD defrag |
| Cleaning | 7 | Disk cleanup, debloat, SFC/DISM, built-in Defender scan + quarantine, cache wipe |
| Network | 9 | Winsock/TCP reset, DNS auto-bench, ping optimization, speed test, hosts telemetry block |
| Streaming / Creation | 6 | Streamer mode (perf + latency), auto encoder CPU priority, Game Mode OFF, HAGS OFF, parasite killer, OBS cache cleanup |
| Privacy | 7 | Disable Windows telemetry, advertising ID, activity history, location, tailored experiences, app tracking, feedback — all reversible |
Optimizations marked "Advanced" (uncertain gain or regression risk) are hidden by default. Enable them in Settings if you want to push further.
Per-optimization cancellation: each optimization shows a "Cancel" button while running that kills the underlying process (useful for long SFC/DISM/antivirus passes).
Language: EN/FR — the app follows your system culture by default (Settings → Language).
The Dashboard shows in real time (refreshed every 2 s) via LibreHardwareMonitor:
- Performance Score /100 — overall score (CPU load + RAM + free disk space), color-coded
- Dedicated GPU card (name + usage + temperature, via NvAPI — all vendors)
- Live disk read/write speed
- CPU / RAM / disk with responsive bars
The GPU temperature is shown via NvAPI. The CPU temperature is not displayed: on AMD/Intel it relies on a kernel driver (WinRing0) that Windows 11 Memory Integrity (HVCI) often blocks, making it unreliable — we prefer showing nothing over a misleading "0".
Accessible from the Tools section of the sidebar:
| Tool | Description |
|---|---|
| Uninstaller | Lists installed programs, uninstalls, and detects leftover files (folders + app data) to remove |
| Updates | Detects and bulk-installs software updates via winget |
| Disk Analyzer | Visualizes folder usage (proportional bars + drill-down) |
| Startup | Enables/disables startup programs (reversible, no deletion) |
| Browsers | Clears cache / cookies / history for Chrome, Edge, Firefox, Brave |
| Services | Disables non-essential Windows services (curated, safe list); re-enabling restores the original startup type |
| Restore | Lists / creates / deletes system restore points, opens the Windows wizard |
| One-click profiles | Applies a curated set of optimizations in one click (Gaming / Max perf / Privacy / Balanced) |
| UWP debloat | Lists and batch-uninstalls Windows Store apps (reinstallable from the Store) |
| Large files & duplicates | Finds large files and duplicates (SHA-256), deletion to the Recycle Bin |
| Health report | Concrete recommendations (RAM, disk, temp, telemetry, startup…) with a fix button |
Scheduled scans (Settings → Scheduled scans): automatic daily/weekly/monthly cleanup via the Windows Task Scheduler, in the background without opening the app.
Background mode (Settings): Klyr can minimize to the notification area (system tray) with an Open / Quick clean / Quit menu, and launch automatically at Windows startup.
Klyr makes no network calls except:
- Internet speed test (ping
1.1.1.1, on user request) - DNS benchmark (resolving
github.com,microsoft.com,cloudflare.com) - Update check (v2.3.0): a simple
GETto the GitHub Releases API at startup to compare versions. No data sent (read-only), can be disabled in Settings → Check for updates. - Software Updater (v2.3.0):
wingetdownloads updates for the software you select (explicit action).
No personal data is ever sent anywhere. No analytics, no tracking, no account.
| Action | Backup created |
|---|---|
net_reset (Winsock/TCP reset) |
Documents\Klyr\Backups\Network\ |
net_reset_firewall |
Firewall rules export via netsh advfirewall export |
net_telemetry_block (hosts edit) |
Dated hosts copy |
clean_event_logs |
.evtx export before clearing |
Plus an automatic system restore point option before each admin optimization (configurable in Settings).
Klyr embeds two diagnostic tools in the About window:
Copies a markdown block to the clipboard, to paste into a GitHub Issue:
**Klyr v2.3.0**
- OS: Windows 11 25H2
- CPU: AMD Ryzen 5 9600X
- RAM: 7.4 / 31.1 GB (24%)
- Disk C: : 765 / 930 GB free
- Architecture: x64
- Admin: yes
Generates a .zip in Documents\Klyr\Reports\ containing:
system_info.txtfull diagnostic (OS, CPU, RAM, sensors, settings, .NET version)settings.jsonyour settingslogs/all persistent logsterminal_session.txtsession terminal buffer
Attach this zip to your bug report — you only need to describe the problem, the diagnostic does the rest.
Privacy: no personal data in the zip. You can open it before sending to verify.
| Tested config | Before | After | Gain |
|---|---|---|---|
| Ryzen 5 9600X, RTX 5060 Ti 16GB (full Gaming optimization) | 3DMark 14681 | 3DMark 15058 | +377 pts |
Gains vary by configuration. The less optimized the baseline, the higher the margin. Optimizations marked "Advanced" can degrade some setups — use them with discernment.
Klyr/
├── Klyr.sln Visual Studio solution
├── Klyr.csproj Targets .NET 10 / WPF / x64
├── App.xaml / App.xaml.cs Global resources + ErrorHandler init + culture
├── app.manifest UAC asInvoker + DPI PerMonitorV2
│
├── README.md / README.en.md This page (FR / EN)
├── CHANGELOG.md Version history
├── SECURITY.md Vulnerability disclosure policy
├── LICENSE.txt Terms of use
├── .gitignore / .gitattributes
│
├── .github/
│ ├── ISSUE_TEMPLATE/ bug_report + feature_request + config.yml
│ └── copilot-instructions.md GitHub Copilot hints
│
├── Assets/
│ ├── Icons/icon.ico Multi-resolution icon (16/24/32/48/64/128/256)
│ └── Branding/ Mark + wordmark SVG + PNG export + screenshot
│
├── Commands/ RelayCommand + AsyncRelayCommand
├── Models/ OptimizationItem, SystemInfoModel (+ sensors/score),
│ InstalledProgram, UpgradablePackage, DiskEntry, StartupEntry
├── Services/
│ ├── SystemService Win32 P/Invoke, CMD/PowerShell runner (CancellationToken kill), restore points
│ ├── HardwareMonitorService v2.3.0 — LibreHardwareMonitor sensors (CPU/GPU temp, disk speed)
│ ├── PerformanceScoreService v2.3.0 — weighted /100 score
│ ├── UninstallerService v2.3.0 — installed programs + leftover detection
│ ├── WingetService v2.3.0 — software updater (winget parsing)
│ ├── DiskAnalyzerService v2.3.0 — folder sizing (parallel recursive)
│ ├── StartupManagerService v2.3.0 — Windows startup (reversible toggle)
│ ├── BrowserCleanerService v2.3.0 — browser cache/cookies/history
│ ├── ScheduledScanService v2.3.0 — Task Scheduler (schtasks)
│ ├── SilentCleanupService v2.3.0 — headless cleanup (--scheduled-clean)
│ ├── UpdateService v2.3.0 — GitHub Releases update check (read-only)
│ ├── LogService Circular buffer (2000 entries) + auto-save + i18n categories
│ ├── SettingsService JSON persistence in %AppData%\Klyr (language + theme + scans + toggles)
│ ├── ThemeService Dynamic Dark/Light switch (45 brushes)
│ ├── DiagnosticService Diagnostic generation + zip export
│ ├── ErrorHandler Global crash handler + persistent crash reports
│ ├── AdminChecker WindowsPrincipal — admin rights check
│ ├── ProgressHelper Progress animation (propagates CancellationToken)
│ ├── OptimizationBenchmarkService Before/after CPU/RAM/disk snapshots
│ ├── OptimizationProfileService Optimization metadata
│ ├── GamingOptimizations Module 1 (9) ── OldPcOptimizations Module 2 (8)
│ ├── CleaningOptimizations Module 3 (8 + antivirus quarantine)
│ ├── NetworkOptimizations Module 4 (9) ── StreamingOptimizations Module 5 (6)
│
├── Resources/ FR/EN localization (Strings.resx + .en.resx + .Designer.cs)
├── Styles/ Icons.xaml (Segoe Fluent Icons) + Animations.xaml
├── ViewModels/ MainViewModel (IDisposable, nav cache, run all, CTS, OpenTool)
├── Views/ MainWindow, SplashScreen, Settings, About, Legal,
│ Uninstaller, Updater, DiskAnalyzer, StartupManager,
│ BrowserCleaner (v2.3.0)
└── Installer/ BUILD_INSTALLER.bat + Klyr_Setup.nsi script
- CHANGELOG.md — version history
- SECURITY.md — vulnerability disclosure policy
- LICENSE.txt — terms of use
Klyr — Published by InfoZen · Yahya — 2026