Apps similar to Sefirah include KDE Connect, which is free and open source. Other options are AirDroid, PlainApp, Phone Link and Valent. Mobile Remote Control Tools like Sefirah are a crowded field, with more than 25 alternatives for Android, Mac, Windows, Linux and the web.
Android and Windows Apps. Allows for work started on (say) phone, to be completed on Windows Desktop. Sharing of files, screen mirroring, media, clipboard, links, output piping from one app to another. Similar also to Opera Browser's new FLOW facilty.
South Korea
Browser-based shared clipboard for sending text, links, and files between devices, even on different networks. Works in real time, with no account, install, or file size limits.
Spain
EU
Share files, folders, messages, links, notifications and clipboard. You can do much more with the PRO version.
Apple-Continuity-style link between Android and Linux — notification mirror, calls & SMS, clipboard, smart audio hand-off, screen mirror. No cloud, no account, E2E encrypted over BLE + LAN.
Browse, transfer, and manage files on your Android device from your Mac. Over USB or WiFi. No cloud. No account. Free.
India
Connect Android and macOS, effortlessly. Native file transfer, mirroring, contacts, photos, remote control and clipboard. All over your local WiFi.
United Kingdom
SideSync is a new PC-Mobile solution that enables screens, windows, and data to be shared easily. Share between a PC and a Galaxy smartphone, or between a Galaxy Tab and Galaxy smartphone.
South Korea
DeskCon integrates your Android Device in the Desktop. Receive Notifications, Files and Commands from your mobile Device on your Desktop PC.
Vala/C implementation of KDE Connect. There is also a GNOME extension (https://github.com/andyholmes/gnome-shell-extension-mconnect/), which also works with the official KDE Connect.
Yet another tool to connect Android phone with desktop similar to KDE Connect.
Azerbaijan
