Telegram
Free
Telegram is a free cloud-based instant messaging platform.
Signal
Open Source
Signal is the most scalable encryption tool.
Off-the-Record Messaging
Open Source
Off-the-Record Messaging (OTR) is a cryptographic protocol that provides encryption for instant messaging conversations.
Psi+
Open Source
Psi is a cross-platform powerful XMPP/Jabber client (Qt, C++) designed for the Jabber power users. Psi+ is a development branch of Psi IM XMPP/Jabber client.
Wickr
Free
Wickr is an instant messenger application.
Tox
Open Source
Tox is a peer-to-peer instant-messaging and video-calling protocol that offers end-to-end encryption.
Ring
Open Source
Ring (SFLphone) is an open-source SIP-compatible softphone and instant messenger for Linux, Microsoft Windows, OS X and Android.
Bitmessage
Open Source
Bitmessage is a decentralized, encrypted, peer-to-peer, trustless communications protocol that can be used by one person to send encrypted messages to another…
Zulip
Open Source
Zulip is a chat and collaborative software.
Compare ChatSecure with alternatives
Compare Telegram and ChatSecure and decide which is most suitable for you.
Compare Off-the-Record Messaging and ChatSecure and decide which is most suitable for you.
Compare Bitmessage and ChatSecure and decide which is most suitable for you.