TwinDesk, a Free App, Shares One Mouse Across Mac, Windows and Linux and Puts Your Android Phone's Calls on the PC

“All your computers and your phone, working as one desk,” the project’s README says. The next line: “Free and open source. No account, no cloud, no shared network needed.”

The pitch runs past the mouse. “Turn an old laptop or your Android tablet into a second screen,” the README says, and open the PC’s apps in windows on the Mac. Version 2.3 made the phone’s camera usable as a webcam in a video call.

The calls are the unusual part. “With Bluetooth, the computer becomes the phone’s headset, so you talk and listen right there,” per the README, with a number pad, contacts and call history on the computer. Texts work the same way. The phone has to be Android 10 or later; the README lists no iPhone support.

When there’s no shared network, it makes one. “Bluetooth is great for the session but too slow for a screen or a big file,” the README explains, so TwinDesk “brings up a direct Wi-Fi link” for as long as it’s needed.

Under the hood, each computer runs an Electron app plus a small native helper “for everything the OS keeps to itself,” and devices talk over one TLS session. The developer, InukaAsith, licensed it GPL-3.0 and created the repository on October 14, 2026. It had passed 1,000 GitHub stars by the time version 2.4 came out on October 27, adding typing in any keyboard language, a phone stylus that becomes “a real pen on the computer, with pressure, tilt and the eraser,” and a map of both computers’ monitors. “1000 Hz mice stay smooth,” the release notes add.

	TwinDesk 2.4	Synergy 3	Deskflow	Mouse Without Borders
Price	free	$15, $19 or $29, one time	free	free (PowerToys)
Open source	yes, GPL-3.0	not checked	yes, GPL-2.0	yes, in PowerToys
Computers	Mac, Windows, Linux	up to 3, 5 or 15, by tier	Windows, macOS, Linux, BSD	up to 4, Windows
Android phone	yes: calls, texts, camera, screen	not listed	not listed	not listed
Signed installers	no	not checked	no on macOS	not checked

Synergy sells “Synergy 3 Lite $15 Control up to 3 computers on your local network,” with Plus at $19 for five and Max at $29 for 15, as a “One time payment for Synergy 3, no subscription.” Deskflow “is a free and open source keyboard and mouse sharing app.” Microsoft’s Mouse Without Borders “enables you to control up to four computers from the same machine.”

TwinDesk isn’t signed. “TwinDesk is free and has no paid Apple Developer ID or Windows code-signing certificate,” its README says. On Windows 11 with Smart App Control on, “unsigned apps are blocked with no Run anyway button,” and the only way past it is turning that protection off, which on many versions “can’t be turned back on without reinstalling Windows.”

For anyone who supports other people’s computers, the signing gap is the first question. An app that asks a user to turn off a Windows security feature they can’t turn back on is a hard sell on any machine you’re responsible for, however good the app is.

Apps like this tend to grow by absorbing features from paid tools one release at a time. TwinDesk went from mouse sharing to calls, cameras and a stylus in two weeks of public releases, and the next tool it pulls in will say a lot about where it’s headed.

Whether the developer gets a signing certificate, and who pays for it, is the open question.