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OpenDisplayYam Display
Free

Free and open source under GPL-3.0, with optional donations.

 Paid

Pricing is not listed on the homepage; the companion apps are distributed through the App…

macOS, iOS macOS, iOS
  • True extended display, not just mirroring
  • Works over USB or Wi-Fi with touch and scroll input
  • USB and wireless connection options
  • Can use another Mac as the display
  • Only extends Macs; Windows and Linux hosts are not supported
  • Maintained by a single developer
  • Mac host only
  • Needs separate companion apps on each device
Downloadable app Downloadable app
Open source Closed source
License: GPL-3.0 License not stated
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked October 1, 2026

Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.