Graph Messenger is described as 'UNOFFICIAL messaging app that uses Telegram's API and add new features like real multi account system, download manager and time line' and is an app. There are more than 25 alternatives to Graph Messenger for a variety of platforms, including Android, iPhone, Windows, Mac and iPad apps. The best Graph Messenger alternative is Signal, which is both free and Open Source. Other great apps like Graph Messenger are Telegram, Element, Matrix and Tox.
FluffyChat is an open, nonprofit and cute matrix messenger app for Ubuntu Touch, Android and iOS.
Keybase is a new and free security app for mobile phones and computers. For the geeks among us: it's open source and powered by public-key cryptography.
Delta Chat looks and feels like other popular messenger apps, but does not involve centralized control, tracking or selling you, friends, colleagues or family out to large organizations. "Privacy by Design" has never been more fun.
Conversations is a privacy focused, open source XMPP Texting [Jabber] client for Android 4.0+ smart phones with wife-approved easy encryption [OTR, OMEMO, or GPG].
Linphone is one of the most famous open source softphones in the world. It is fully SIP-based, for all calling, presence and IM features.
Franz is a free messaging app / former Emperor of Austria and combines chat & messaging services into one application. Franz currently supports Slack, WhatsApp, WeChat, HipChat and many more. You can download Franz for Mac, Windows & Linux.
Trillian is an instant messaging app that works on phones, tablets, and desktops while keeping your chats neatly synchronized between all of them! We think conversation should be easily shared between all of your devices, not trapped as text messages on your phone.
Provides comprehensive communication features including group video calls, voice calls, fast messaging, photo sharing, and location mapping. Access through mobile and web platforms with real-time notifications, ensuring seamless interactions using multimedia tools.
FaceTime is a video calling software feature developed by Apple for the iOS and Mac OS.
An alternative Telegram client based on TDLib, with higher speed, slicker animations and experimental features.
kMeet is an unlimited, free, Swiss solution for organising encrypted video-conferences.
XMPP, or Extensible Messaging and Presence Protocol, is an open standard for instant messaging and real-time communication, allowing for message exchanges between any two entities on the Internet. It's known for its decentralized and extensible nature.
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