Threema is probably the best-known alternative to WhatsApp. When WhatsApp was acquired by Facebook, many users switched to this Swiss provider. Data priva - cy plays a key role here, with users benefiting from end-to-end encryption and the assurance that Threema only stores the data that it really needs. That said, the number of Threema users is fairly low, which is also due to the fact that it costs money. Signal is considered one of the most secure messaging services around. It is owned by Open Whisper Systems, a non-profit developer. Signal offers the best experience when it comes to data protection and privacy. It’s open source, offers end-to-end encryption and incorporates a large number of additional functions so users can enjoy private conversations. Its weakness is its small number of users, a frequent issue for many alternatives to WhatsApp. There are other free messaging apps that may be an alternative to WhatsApp and the like. Unlike closed systems, in which you can only communicate with people who have installed the same service, thus locking them into one provider, these are more like e-mail. They run on a standard protocol (usually XMPP or Matrix), allowing users to exchange messages across services. In other words, two people do not need to have installed the same app if they want to talk. One such service is Element , which is available for Android and iOS.
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