Threema is described as 'New mobile messaging app that puts security first. With true end-to-end encryption, you can rest assured that only you and the intended recipient can read your messages' and is a very popular instant messenger in the security & privacy category. There are more than 100 alternatives to Threema for a variety of platforms, including Android, iPhone, Windows, Mac and Linux apps. The best Threema alternative is Signal, which is both free and Open Source. Other great apps like Threema are Telegram, Element, Tox and bitchat.
Boltgram is a fast, secure and nice messaging app that uses Telegram’s API. You can enjoy all the features of Telegram, such as end-to-end encryption, cloud-based storage, group chats, channels, bots, stickers, and more. But that’s not all.
Sweden
EU
Make video calls to anybody in the world with a private connection. Share the conversation by sharing url.
World's most secure P2P messenger. End-to-end encrypted, zero-server architecture, quantum-resistant roadmap. WebRTC direct connections, advanced ECDH + DTLS + SAS verification, full ASN.1 validation.
Krypta is a privacy-first, accountless web chat platform designed for fast, secure, and disposable communication. Unlike traditional messaging platforms that require phone numbers, personal emails, or persistent user profiles, Krypta allows anyone to spin up an end-to-end...
EstoniaEU
Shape helps busy teams reach consensus and ship faster with focused spaces designed for discussion and delivery.
United States
Treebal is a French eco-friendly communication platform providing secure messaging, voice and video with end-to-end encryption and a decentralized design.
FranceEU
Tempo is a privacy-focused messaging app designed for secure communication. Features include end-to-end encryption, restrictions on screenshots and screen recordings, and self-destructing messages.
Radar discovers people and things around you, lets you chat securely, share media, and stay safe — even when the internet is gone. No phone number. No email address. No data collected. Ever. No advertising. Ever.
United Kingdom
Qaxa is an end-to-end encrypted workspace for teams. Chat in real time, assign tasks, write notes, and share files — all encrypted on your device. Your encryption keys stay with you, so Qaxa can’t read your content. No trackers. No logs. No AI training.
SlovakiaEU
X2Chat is a secure messenger where your account is a cryptographic key created on your device: no phone number, no email, no password. Messages, files, voice and video calls are end-to-end encrypted (AES-256-GCM, keys wrapped per device with RSA-2048, calls via WebRTC Insertable...
Russia
Team chat, videoconferencing, screen sharing, file sharing, apps builder, process automation, integrations - with Tekos Collaboration & Automation
