Microsoft's Phone Link lets you get notifications on your desktop, copy and paste between devices, and more. But it comes with strings attached. You need a Microsoft account. Many of the best features are locked to Samsung phones and select Chinese brands. Storage integration, screen mirroring, and other useful tools are only available for those devices.
Sefirah is an open source alternative that removes all of those barriers. I have been using it for over a month, and it is surprisingly good at its job.
What makes Sefirah different
First, Sefirah is completely free. No paywalls. No ads. It is fully open source and available on the Google Play Store and every major open source repository[reference:28].
Second, every feature works on every Android phone. There are no brand restrictions. No Samsung exclusivity. If you have an Android device, Sefirah works with it.
Third, it connects to Windows flawlessly. There is even an early release Linux version[reference:29]. The connection is stable and reliable, which is more than I can say for some alternatives.
Fourth, and this is a big one: no account is required. No Microsoft account. No Google account. No account of any kind. You install the app on your phone and computer, pair them, and you are done[reference:30].
Features that matter
Clipboard sync works instantly. Copy text on your computer, paste it on your phone. Copy an image, paste it on the other device. It is seamless and fast[reference:31].
File sharing is the simplest I have seen in an app of this kind. There is a share icon under the phone status in the Windows app. Send files from your computer to your phone. On your phone, find Sefirah in the Android share menu to send files to your computer. You can send multiple files at once[reference:32]. KDE Connect, another popular open source option, can only send one file at a time from computer to phone[reference:33].
Full storage access is where Sefirah truly pulls ahead. Phone Link limits storage access to photos only. Sefirah gives you full access to the Android file storage system in Windows Explorer[reference:34]. Browse your phone's files, move things around, manage storage, all from your PC.
SMS and calls are also supported. You can dial phone calls and move them to your computer. The app shows call logs and SMS messages, and you can send SMS from your PC[reference:35].
Screen mirroring is available through an additional open source plugin[reference:36]. It is not built in, but the option exists.
The open source advantage
KDE Connect was the closest thing to a Phone Link alternative for years. Sefirah has raised the bar. It is more polished, more reliable, and more feature-complete[reference:37]. The open source community has built something that beats a trillion-dollar tech giant's version in almost every category[reference:38].
For Windows users who want a less intrusive version of Phone Link, Sefirah is a revelation. It feels intentionally designed to look and feel familiar to people coming from Microsoft's app, but without the gatekeeping[reference:39].
If you have been frustrated by Phone Link's restrictions or simply want more control over your device integration, Sefirah is worth a serious look.