What are some alternatives?
When comparing Signal and Wickr, you can also consider the following products
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
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.
Threema - A secure, end-to-end encrypted Swiss instant messenger with a focus on privacy.
Riot.im - Open source interoperable collaboration app.
Tox - Send messages, files, create groups and make Tox to Tox audio and video calls. Securely.
Skype - Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.