Desktop Widgets
Add customizable widgets to your Windows desktop — clocks, calendars, notes, weather, and more. Always visible, always useful.
v1.0.0 — Free & Open Source
Customize your Windows desktop
OverlayOS is a free desktop customization app that lets you add widgets, productivity tools, system monitors, and notification panels directly to your Windows desktop. Browse the built-in Tool Workshop, install community tools, or build your own — and make your desktop truly yours.
Everything you need to customize Windows
A complete desktop widget platform with productivity tools, system monitoring, notifications, security, and extensibility built in.
System Monitoring
Real-time CPU, GPU, RAM, disk, and network monitors right on your desktop. Track performance at a glance without opening Task Manager.
Notification Widgets
Stay on top of alerts, reminders, and updates with desktop notification widgets. Never miss what matters.
Tool Workshop
Browse, discover, and install community-built productivity tools from the built-in marketplace. One click to install.
Secure Sandboxing
Every plugin runs in an isolated environment with granular permissions — your system stays safe from untrusted code.
Fluent Dark UI
Modern, fluid interface with full dark theme support. Built on WPF with Windows 11 Fluent design language.
Build Your Own Tools
Create custom widgets and tools with the open plugin API. Package and share them with the community via the Workshop.
Auto Updates
Seamless auto-update framework keeps OverlayOS and all your installed tools up to date effortlessly in the background.
Lightweight & Fast
Minimal resource footprint. Designed to run silently in the background without slowing your PC — under 50 MB RAM.
How people use OverlayOS
Whether you're a developer, gamer, or power user — OverlayOS adapts to your workflow.
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Developers
Monitor system resources, track build times, and keep API dashboards visible while coding.
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Gamers
Overlay FPS counters, CPU/GPU temperatures, and network stats without leaving your game.
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Productivity
Add sticky notes, calendars, task lists, and notification widgets to stay organized.
Frequently Asked Questions
Everything you need to know about OverlayOS.
What is OverlayOS?
OverlayOS is a free, open-source desktop customization application for Windows 10 and Windows 11. It lets you add widgets, productivity tools, system monitors, and notification panels directly to your desktop. Think of it as a modern widget host that makes your Windows experience truly yours.
Is OverlayOS free?
Yes, OverlayOS is completely free and open source. You can download it, use it, and even contribute to its development on GitHub. No subscriptions, no ads, no hidden costs.
What kind of widgets can I add?
You can add system monitors (CPU, GPU, RAM, disk, network), notification widgets, productivity tools, clocks, calendars, notes, and much more. Browse the built-in Tool Workshop for community-made widgets, or build your own using the open plugin API.
Does OverlayOS work on Windows 10 and Windows 11?
Yes, OverlayOS supports both Windows 10 and Windows 11 (64-bit). No additional runtime is required — everything is bundled in the installer.
Is it safe to install community tools?
Absolutely. Every community plugin runs inside a secure sandbox with isolated permissions. Plugins cannot access your files, network, or system resources unless you explicitly grant permission. OverlayOS also supports package signature verification.
How much system resources does OverlayOS use?
OverlayOS is designed to be lightweight — typically under 50 MB of RAM with minimal CPU usage. It runs silently in the background and won't slow down your PC.
Download OverlayOS for Windows
Free, open source, and ready to customize your desktop. Works on Windows 10 and Windows 11 (64-bit). No account required.
Windows Installer (x64)v1.0.0·51.9 MB·.exe installer
System Requirements
Windows 10 or later (64-bit)No additional runtime required (bundled)