Telegram is a free cross-platform messaging app with a focus on privacy, security, and speed.
Viber is a messenger application that allows users to send messages and make video and voice VoIP calls over the Internet.
HalloApp is a social networking application.
Bitmoji is an app created in 2014 that allows users to create personalized emojis to share via text or social media.
Facebook Messenger (commonly known as Messenger) is a messaging app and platform owned by Facebook.
Wirehog was a friend-to-friend file sharing program that was linked to Facebook and allowed people to transfer files directly between computers.
Proprietary voice-over-internet protocol (voip) software
Attractive World is a company founded in 2007 by Ludovic Huraux.