Mouse without Borders for Windows

Brief summary

Mouse without Borders is a small utility created by indie developer Truong Do and distributed through the Microsoft Garage initiative. It lets you operate several Windows PCs with a single keyboard and mouse, making cursor and input control feel continuous across machines on the same local network.

How devices pair and how the cursor moves between machines

The app uses a local network pairing process: each PC is linked by entering a generated security code and a device name. After pairing, the machines keep an open communication channel that monitors pointer position and keyboard focus. When the cursor crosses an edge of one screen, control is handed off to the adjacent computer automatically, creating a near-seamless desktop transition. The system is designed for up to four connected computers without needing manual switching.

Clipboard sharing and file transfer

• Clipboard synchronization keeps copied text and files available across all connected PCs so you can paste on any machine.
• File movement is supported via clipboard-style copy/drag actions, removing the need for separate file‑sharing tools.
• You can change clipboard behavior to restrict which data types sync or to temporarily turn off clipboard sharing.

Input behavior settings and keyboard shortcuts

• Hotkeys let you lock the cursor on a single PC, jump straight to a particular system, or disable cross-screen motion.
• Additional options control how screen edges behave (for example, enforcing barriers or enabling wrapping) and let you set the order of connected machines.
• These controls determine how strictly input transitions are enforced and how quickly you can move between systems.

What it is not — limitations and scope

Mouse without Borders provides networked KVM-style input sharing (keyboard and mouse) and clipboard/file transfer, but it does not offer display mirroring, remote-view capabilities, or cloud-based synchronization. It’s intended for a trusted local network of machines rather than for remote desktop access over the internet.

Related Garage projects and alternatives

• DimScreen Free is one example of another small utility in the Microsoft Garage ecosystem.
• Mouse without Borders is part of the same Garage family that produced tools such as Seeing AI and the Microsoft Launcher, all of which extend Windows functionality in focused ways.