Mac OS X Softwares to End-to-End Encryption

Tox is a free, open-source, and secure peer-to-peer instant messaging and video calling protocol designed for strong privacy and censorship resistance. It provides end-to-end encrypted communications without reliance on central servers.

Adium is a free and open-source instant messaging client for macOS, designed to connect to multiple chat networks simultaneously. Supporting protocols like Jabber (XMPP), Google Talk, AOL Instant Messenger (AIM), ICQ, MSN Messenger, and Yahoo! Messenger, Adium provides a unified interface for all your conversations.

Slack is a leading cloud-based platform designed for team communication and collaboration. It offers a central location for conversations, file sharing, and app integrations, enabling teams to work more efficiently and stay connected regardless of location.

MEGA is a secure, user-controlled cloud storage and file-sharing platform built with end-to-end encryption at its core.

Write! is a versatile and elegant writing application designed for creating notes, to-do lists, articles, and longer writing projects. It combines the essential features of a word processor with a clean, distraction-free interface to promote focus and productivity.

Matrix is an open network for secure, decentralized real-time communication. It provides a flexible protocol for developers to build collaborative applications like instant messaging, VoIP, and video conferencing, enabling seamless communication across different service providers.

SpiderOak is a highly secure, zero-knowledge cloud backup, sync, and sharing platform designed to protect your data from ransomware, hardware failures, and other threats. It offers robust end-to-end encryption, ensuring only you can access your files.

Bitmessage is an open-source peer-to-peer encrypted messaging system designed to provide robust privacy and security. It operates without central servers, ensuring decentralized communication and offering anonymity by design. Ideal for those prioritizing secure and private digital interactions, it leverages strong encryption to protect messages from eavesdropping.