WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
Sync.com - Sync. com offers a backup tool and a file sharing service, rolled into one.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Zoho WorkDrive - File storage & content collaboration tool for modern teams
Digsby - Tagged makes it easy to meet and socialize with new people through games, shared interests, friend suggestions, browsing profiles, and much more.
kDrive - The most privacy-friendly online storage and file sync service. From 2 TB, hosted in Switzerland.