Spacedesk
Turn a spare tablet, phone or laptop into a real second monitor for your Windows PC.
What is it?
Spacedesk is display-extension software that makes another device behave like an extra monitor for a Windows PC. A driver on the PC creates a virtual display, then streams it over WiFi or USB to the Spacedesk app on a tablet, phone, or even another computer's browser. To Windows it looks exactly like a plugged-in monitor — you can extend or duplicate your desktop onto it.
Who should use it?
People who want a second screen without buying one: students studying with references beside their writing, remote workers who travel with a tablet, and anyone with an old iPad or Android tablet gathering dust in a drawer.
Main features
- Extends or mirrors a Windows desktop to almost any device
- Works over WiFi or USB
- Viewer apps for iOS, Android and any HTML5 browser
- Touch and pen input from the tablet back to the PC
- Free for personal use
Pros & cons
Pros
- Free for personal use — no trial games
- Works with nearly any spare device, even old ones
- Genuine display extension, not just mirroring
Cons
- The host must be a Windows PC
- Noticeable latency on busy or slow WiFi
- Setup involves installing a display driver
At a glance
- Platforms
- Windows · iOS · Android · Web
- License
- Proprietary
- Works offline
- Yes
- Internet required
- No
Alternatives
Screenshots
Video tutorial
Frequently asked questions
External resources
Ratings & reviews
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