Alternatives to Bitmessage for all platforms with any license

Signal

TextSecure and RedPhone have been merged to create Signal! Using Signal, you can communicate instantly while avoiding SMS fees, create groups so that you can chat in...

Free Open Source Mac Windows Linux Android iPhone ... Android Tablet iPad Chrome
End-to-end encryption Encrypted chat Security focused Texting ... Encrypted calls Encrypted Connection Self destructing messages Video calling Voice Call Built-in File transfer Color coding Encrypted VoIP calls Forward Secrecy Group chat Mobile friendly Works Offline Protected by Password Based on phone number Privacy focused Privacy protection Private messaging Send files Voice messages Add a feature

355 Like
Tox

Send messages, files, create groups and make Tox to Tox audio and video calls. Securely.

Free Open Source Mac Windows Linux Android iPhone ... Android Tablet BSD
Decentralized Encrypted chat Peer-To-Peer Built-in player ... Security focused Video calling Ad-free Anonymity Anonymous Secure Filesharing Client side encryption End-to-end encryption Group chat Peer-To-Peer Privacy focused Share your screen Texting Add a feature

367 Like
Riot.im

Riot (formerly Vector) is an opensource interoperable app running on Web, iOS and Android. It is built around chat rooms, both public and private and provides messaging...

Free Open Source Mac Windows Linux Web Android ... iPhone iPad Self-Hosted Chrome Safari F-Droid Firefox
End-to-end encryption Decentralized Group chat Matrix.org protocol ... Voice Call Built-in File transfer Encrypted chat GitHub integration Group collaboration Server Moderation Server side history Slack integration Team Collaboration Video calling Add a feature

160 Like
Ring

Ring is a secure and distributed voice, video and chat communication platform that requires no centralized server and leaves the power of privacy in the hands of the...

Free Open Source Mac Windows Linux Android
Decentralized Distributed End-to-end encryption Peer-To-Peer ... Video calling Add a feature

90 Like
RetroShare

RetroShare is a open source cross-platform, private and secure decentralized communication system. It lets you to securely chat, share photos, videos, and more, using...

Free Open Source Mac Windows Linux BSD OpenSSL ... OpenPGP
Serverless Anonymous Secure Filesharing Decentralized Encrypted end to end ... Gpg encryption Add a feature

95 Like
ChatSecure

ChatSecure is a free and open source messaging app that features OTR encryption over XMPP.

Free Open Source iPhone iPad
Encrypted chat Integrated File Sharing OTR Add a feature

55 Like
Adium

Adium is a free and open source instant messaging application for Mac OS X, written using Mac OS Xs Cocoa API, released under the GNU GPL and developed by the Adium...

Free Open Source Mac OS X
Customizable Multiple languages Multiple protocols OTR ... Tabbed interface Support for Themes Add a feature

329 Like
Threema

Threema is a new mobile messaging app that puts security first. With true end-to-end encryption, you can rest assured that only you and the intended recipient can read...

Commercial Android iPhone Android Tablet Windows Phone iPad ... Android Wear
End-to-end encryption Encrypted chat Group chat Integrated File Sharing ... Encrypted calls Encrypted email Integrated App lock Multiple languages Picture sharing Privacy focused Privacy protection Security focused Add a feature

50 Like
Wickr

Wickr is a free end-to-end encrypted text, video, picture and voice messenger with full sender control. Shredder – Irreversibly remove all deleted messages, images...

Free Mac OS X Windows Linux Android iPhone ... Android Tablet iPad
Anonymity Encrypted chat End-to-end encryption Integrated File Sharing ... Secret chats Self destructing messages Add a feature

26 Like
Gajim

The goal of Gajim is to provide a full featured and easy to use Jabber client. Gajim works nicely with GNOME, but does not require it to run. It is released under the...

Free Open Source Mac OS X Windows Linux BSD Xfce
Encrypted chat Group chat Multiple languages OTR ... Supports XMPP Tabbed interface Video calling Add a feature

51 Like
Psi

Psi is an instant messaging application for Windows, Linux, and Mac OS X that connects to the free, open XMPP network. Localized versions of Psi are available in...

Free Open Source Mac OS X Windows Linux BSD
No features added Add a feature

77 Like
Ricochet

Anonymous instant messaging for real privacy.

Free Open Source Mac OS X Windows Linux
Anonymity End-to-end encryption Peer-To-Peer Serverless Add a feature

18 Like
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Off-the-Record Messaging

Off-the-Record (OTR) Messaging allows you to have private conversations over any instant messaging (MSN,Gtalk, Facebook and so on) by providing encryption...

Free Open Source Mac OS X Windows Linux Java Mobile
Encrypted chat Add a feature

41 Like
WeeChat

WeeChat is a fast, light and extensible chat client. It runs on many platforms (including Linux, BSD and Mac OS). WeeChat is: - modular: a lightweight core with...

Free Open Source Mac OS X Linux Android BSD Xfce
Command line interface Extensible by Plugins/Extensions Modular System Multiple protocols Add a feature

28 Like
Bit Chat

Technitium Bit Chat is a secure, peer-to-peer (p2p), open source instant messenger designed to provide end-to-end encryption. It can be used over Internet and private...

Free Open Source Windows Linux
End-to-end encryption Peer-To-Peer Add a feature

19 Like