SyncTrayzor is described as 'wrapper for Syncthing which allows Syncthing's window to be hidden in the tray area. SyncTrayzor has a built-in web browser to manage Syncthing without opening your browser. SyncTrayzor can be configured to automatically start at PC startup' and is a popular app in the Backup & Sync category. There are more than 25 alternatives to SyncTrayzor for a variety of platforms, including Windows, Online / Web-based, Mac, Linux and Android. The best alternative is Syncthing, which is both free and Open Source. Other great apps like SyncTrayzor are Microsoft OneDrive (Freemium), IPFS (Free, Open Source), Resilio Sync (Freemium) and Seafile (Freemium, Open Source).
IPFS is a global, versioned, peer-to-peer filesystem. It combines good ideas from Git, BitTorrent, Kademlia, SFS, and the web. It is like a single bittorrent swarm, exchanging git objects. IPFS provides an interface as simple as the HTTP web, but with permanence built in.
Icedrive is a cloud storage, backup and file sharing service with browser, desktop and mobile apps. The Icedrive desktop application allows users to mount their cloud storage space as a real hard drive.