Google Drive is described as 'file storage and synchronization service which enables user cloud storage, file sharing and collaborative editing.Google Drive incorporates the Google Docs suite, a collaborative office suite of productivity applications that offers:-' and is one of the leading apps in the Backup & Sync category. There are more than 100 alternatives to Google Drive for a variety of platforms, including Online / Web-based, Windows, Mac, iPhone and Android. The best alternative is Nextcloud, which is both free and Open Source. Other great apps like Google Drive are Dropbox (Freemium), MEGA (Freemium), ownCloud (Freemium, Open Source) and Syncthing (Free, Open Source).
Live Documents is a web-enabled Office productivity suite (word processing, spreadsheets, presentations, mail) that can be used as software on your desktop or as services within your browser whether you are online or offline.
Pvtbox Sync allows direct, fast, and secure peer-2-peer data transfer between all of your devices including PC, Mac, Servers, NAS, and Mobile (Android & iOS). Sync/Share/Collaborate all your files with ease.
Qabel is a free, published-source cryptography platform. The platform encrypts everything that is connected with it end-to-end, including Messenger, e-mail, industrial applications and individual solutions.