Uup is described as 'Reclaim your privacy With Uup. Uup is based on asymmetric encryption. Private key is generated based on the device and it doesn't need any email, mobile number or anything else to work' and is a Encrypted Chat app in the social & communications category. There are more than 50 alternatives to Uup for a variety of platforms, including Android, Windows, Linux, Mac and iPhone apps. The best Uup alternative is Signal, which is both free and Open Source. Other great apps like Uup are Telegram, Element, Matrix and Tox.
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].
Germany
EU
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.
United States
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.
FranceEU
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.
United States
Messages is Google's communications app for Android to helps send and receive SMS and MMS messages. You can also send group texts as well as your favorite pictures, videos and even audio messages to your contacts.
United States
Self-hosted communication platform with secure audio, video, chat, web conferencing, screensharing, advanced encryption, and metadata privacy, running on user-controlled servers, supporting web and mobile apps, and eliminating third-party data exposure.
GermanyEU
Decentralized messenger featuring end-to-end encryption for individual and group chats, no registration needed, no tracking or metadata logs, IP address protection, secure attachment sharing, multi-device sync, dark mode, open-source code, and ad-free use.
Switzerland
An alternative Telegram client based on TDLib, with higher speed, slicker animations and experimental features.
United Arab Emirates
Dino is a modern open-source chat client for the desktop. It focuses on providing a clean and reliable Jabber/XMPP experience while having your privacy in mind. Using GTK+/Vala.
GermanyEU
A playful and interactive multimedia messaging app offering ephemeral photo and video sharing. Control view time, get alerts for screenshots, and engage with friends through gamified interactions and video calls.
United States
Status combines a private messenger, secure crypto wallet, and Ethereum Web3 DApp browser into one powerful communication tool. Chat with friends and growing communities. Buy, sell, store, and exchange digital assets.
GermanyEU
WeChat is a complete mobile communication and private social networking app. Free, cross-platform, and full-featured, WeChat is the best way to keep in touch with everyone you care about.
China
