KryptEY is described as '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' and is a instant messenger in the security & privacy category. There are more than 50 alternatives to KryptEY for a variety of platforms, including Android, iPhone, Windows, Linux and Mac apps. The best KryptEY alternative is Signal, which is both free and Open Source. Other great apps like KryptEY are Telegram, SimpleX Chat, Jami and WhatsApp.
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).
United States
Partisan-SMS is based on the open-source SMS app QKSMS. P-SMS encrypts SMS messages to allow for peaceful protesters to communicate without authoritarian regimes being able to spy on them.
TeleGuard is the data-secure messenger from Swisscows. TeleGuard encrypts every message and all telephone calls with encryption algorithm currently available: SALSA 20. TeleGuard servers are located in Switzerland, they are not subject to the data protection laws of the EU /...
Switzerland
Converse is a messaging app for decentralized, secure, end-to-end encrypted conversations. Built on the XMTP network, Converse lets you own your conversations and take them anywhere whenever you want, ensuring your most important messages—the ones you never want to lose or be...
United States
This Android app allows you to synchronize your SMS messages to a remote Nextcloud instance where you can read and backup them. It also allows you to restore your SMS messages to your Android phone.
Access messages everywhere Whether you are working at your computer, reading on your tablet, or watching the game on your TV. Pulse is with you everywhere, so you never miss a message.
United States
Vidar is an open-source end-to-end encrypted SMS application utilizing the Advanced Encryption Standard (AES256) to send symmetrically encrypted messages. Unlike most messaging apps, Vidar operates entirely over SMS; this eliminates the need for internet access or external...
jami-commander (jc for short) is a simple but convenient CLI-based Jami client app for setting up accounts and swarms as well as sending.
This project won the first prize 🥇 at Telegram Lightweight Client Contest and now is an official Telegram client available to anyone at web.telegram.org/a.
France
EU
