Telegram
Free
Telegram is a free cloud-based instant messaging platform.
Slack
Freemium
Slack is a cloud-based team collaboration tool.
Signal
Open Source
Signal is the most scalable encryption tool.
ChatSecure
Open Source
ChatSecure is a messaging application for iOS which allows OTR and OMEMO encryption for the XMPP protocol.
Zulip
Open Source
Zulip is a chat and collaborative software.
Dasher Messenger
Free
Dasher Messenger provids a way to message friends.
WhatsApp Messenger
Free
WhatsApp Messenger is an instant messaging platform owned by Facebook.
Tox
Open Source
Tox is a peer-to-peer instant-messaging and video-calling protocol that offers end-to-end encryption.
Wire
Free
Wire is a cross-platform, encrypted instant messaging client created by Wire Swiss. It is available for iOS, Android, Linux, Windows, macOS and Web browser cl…
Sicher
Commercial
Sicher is a freeware instant messaging application for iOS, Android, and Windows Phone. Sicher allows users to exchange end-to-end encrypted text messages, me…
Wickr
Free
Wickr is an instant messenger application.
Compare Threema with alternatives
Compare WhatsApp Messenger and Threema and decide which is most suitable for you.
Compare Dasher Messenger and Threema and decide which is most suitable for you.