Instant Messengers Page 9 of 17

Smoke Messenger is an open-source Instant Messenger that is known as the first mobile Messenger worlwide using the encryption algorithm McEliece. To be downloaded at F-Droid.org or Github.com. Smoke provides with its own Server-Software: SmokeStack-Echo-Server.

Safe, Fast And Decentralized Messenger.

Zangi Private Messenger is a decentralized messaging app with a focus on security and low data usage.

Cyanide is Tox client for Sailfish OS .

ScudCloud is a non official open-source Ubuntu desktop client for Slack.

qutIM - free open-source multiprotocol ( ICQ, Jabber/GTalk/Ya.Online/LiveJournal.com, Mail.Ru, IRC )

Text and video chat for your teams with unlimited users. Invite any customer to a conference. GDPR-compliant as self-hosted on your own server or in the cloud. Cross-platform support for Windows, Linux, macOS, and as a Docker container.

CenterIM is a text-mode IM client for Linux, *BSD, Solaris and other Unices that uses libpurple as a communication backend.

A fork of Signal for Android with proprietary Google binary blobs removed. Uses OpenStreetMap for maps and a websocket server connection, instead of Google Maps and Firebase Cloud Messaging.

Total.js Messenger is a small alternative to Slack built on Node.js and total.js .

Zero Knowledge, end-to-end encrypted collaboration tool for teams and businesses. Reviewable source code. Python wrapper for bots & integrations. Encryption white paper. Native offline mode. Faster file-sharing. Built for enterprise.

Lightweight and powerful XMPP client for iPhone and iPad, with audio and video calls and built-in privacy

blabber.im is a fork of Conversations with some changes to improve usability.

aMSN is a free open source MSN Messenger clone. aMSN attempts to emulate the look and feel of Windows Live Messenger, and supports many of its features.

Offline Messaging Voice Clips Display pictures Custom emoticons Multi-.

Emoty is a messaging application with emphasis on simplicity, freedom and safety. It's a client for RetroShare network, hence use the same decentralized, Friend-to-Friend network structure with end-to-end encryprtion.

Sylk Suite allows the creation and delivery of rich multimedia applications accessed by SIP Clients, XMPP endpoints and WebRTC applications.

AQQ is a Polish (but available in English) multiprotocol instant messenger with support of: AQQ, Jabber, Gadu-Gadu, Tlen and ICQ. It has many great features like: one tabbed message window for all conversations; quick search for contacts; file sending (even through FTP thanks to...

QuteCom is a community of enthusiasts and developers, creating free software products related to communication over IP. The flagship product of the QuteCom project is a softphone which allows you to make free PC to PC video and voice calls, and to integrate all your IM contacts...

A secure video conferencing solution for businesses of all sizes. With focus on digital sovereignty and data protection.

Scuttlebutt is the native Microsoft Viva Engage client for Mac OS X that provides simultaneous access to multiple Yammer accounts.

Ayttm is an instant messaging (aka chat) client that provides all-in-one chat functionality for several major instant messaging services from one simple program. Ayttm "Contacts" allow you to refer to several accounts of the same person from a single contact name...

Messenger for Desktop is a wrapper for the official client messenger.com. Therefore it works like a regular browser which can only navigate to the messenger.com web app. MFD doesn't touch your messages, account or personal data. All that is handled securely by Facebook.

Openfire (formerly Wildfire) is a cross-platform instant messaging (IM) and groupchat server. It uses the only widely adopted open protocol for instant messaging, XMPP (also called Jabber). Openfire is incredibly easy to setup and administer, but offers rock-solid security and...

Private social media. Embed a self-hosted Discord alternative under your site.

Zalo is a Vietnamese instant messaging multi-platform service developed by VNG Corporation.

Kadu is an open source Jabber/XMPP and Gadu-Gadu instant messenger client for Linux, *BSD, Mac and Windows.