SureSpot is described as 'Open source encrypted messenger designed to make encrypted messaging simple and accessible to anyone' and is a Encrypted Chat app in the security & privacy category. There are more than 25 alternatives to SureSpot for a variety of platforms, including Android, iPhone, Windows, Mac and iPad apps. The best SureSpot alternative is Signal, which is both free and Open Source. Other great apps like SureSpot are Telegram, Element, Tox and Threema.
ChatSecure is a free and open source messaging app that features OTR encryption over XMPP. You can connect to your existing accounts on Facebook or Google, create new accounts on public XMPP servers(including via Tor), or even connect to your own server for extra security.
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 /...
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).
Technitium Mesh is a secure, anonymous, peer-to-peer (p2p), open source instant messenger designed to provide end-to-end encryption. Primary aim of developing this instant messenger is to provide privacy which is achieved using cryptography and anonymity using Tor network.
Conduit is a simple, fast and reliable chat server powered by Matrix. Conduit is an alternative to Synapse and tries to be lightweight and easy to install, but it is still in development.
Photo4tune is a free application that provides a simple way to capture and share the best moments of your life on your Android phone. All the photos you post will appear on the world’s map showing the place they were taken.
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