Uup is described as 'Reclaim your privacy With Uup. Just download the app and start chatting. Uup App 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, iPhone and Mac 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.
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.
Bitmessage is a P2P communications protocol used to send encrypted messages to another person or to many subscribers. It is decentralized and trustless, meaning that you need-not inherently trust any entities like root certificate authorities.
qTox - The most feature-rich Tox client; P2P instant messaging, audio and video calls.
Imo is a free, simple,secure and faster international video call & instant messaging app.
Android keyboard for secure E2EE communication through the signal protocol in any messenger. Communicate securely and independent, regardless of the legal situation or whether messengers use E2EE.
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.
Protect your communication in transit and on your phone. Silence (formerly SMSSecure) is a full replacement for the default text messaging application: all messages are encrypted locally and messages to other Silence users are encrypted over the air.
Utopia P2P Ecosystem. Utopia is a feature-rich platform that is specifically designed to protect privacy of communication, confidentiality, and security of personal data. Utopia is a decentralized network, with no central server involved in data transmission or storage.
Quantum-resistant encrypted messaging, video/audio calls, and file transfers in the browser with optional registration and no downloads required.
Fully open source instant messaging server and clients. No proprietary components or non-free dependencies. Backend in pure Go (GPL 3.0), with a command-line administration tool in python + gRPC. Clients for Android, iPhone, and Web - ReactJS (all licensed under Apache 2.0).
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