WarpDrop is described as 'Privacy-first, self-hostable, realtime file sharing. Like AirDrop, but for people who don't trust "The Cloud?" or just want to feel like a hacker sending files over a CLI' and is an app in the file sharing category. There are more than 50 alternatives to WarpDrop for a variety of platforms, including Windows, Linux, Android, Mac and Web-based apps. The best WarpDrop alternative is LocalSend, which is both free and Open Source. Other great apps like WarpDrop are Syncthing, Transfer.it, OnionShare and PairDrop.