Threema alternatives

Fast. Secure. Powerful.

Tresorit is an online cloud storage service based in Switzerland and Hungary that emphasizes enhanced security and data encryption for Businesses and individuals/freelancers. ... Tresorit has been likened to a high-security alternative to Dropbox.

Brosix is a cross-platform secure team instant messaging solution specifically built for teams, groups, companies and corporations.

Signal is a cross-platform encrypted messaging service developed by the Signal Foundation and Signal Messenger LLC. It uses the Internet to send one-to-one and group messages, which can include files, voice notes, images and videos.

Threads is a platform designed to make work more inclusive by empowering teams to discuss and make decisions at scale.

WireMin is a decentralized social network that is dedicated to full freedom. It aims to build the next frontier of social network enabling completely free speech across the customizable communities.

MyChat is an enterprise messenger with own server that can work in LAN or over the slow Internet connection.

YEO is a next-gen secure, private messaging platform that authenticates not just the device, but the intended recipient using continuous facial recognition. You decide who views your content, where and when they see it.

Vernam IM is fully decentralized. It doesn't store data. No user data is collected. No registration needed. No message history supported.