Mac OS X Softwares to Private messaging

ZeroMe is a decentralized, peer-to-peer social network powered by ZeroNet. It offers a censorship-resistant platform where users control their data and communication, featuring threaded conversations, private messaging, and an emphasis on free speech.

Simple Machines Forum (SMF) is a powerful and free open-source forum software designed to provide a robust platform for online communities. It offers a comprehensive set of features for building and managing dynamic message boards.

Qiscus provides a comprehensive Communication Platform as a Service (CPaaS) offering robust chat, video call, and real-time collaboration features. It empowers businesses to integrate powerful communication capabilities into their applications and services.

MyBB (MyBulletinBoard) is a free, open-source forum platform written in PHP and utilizing MySQL. It provides a robust and extensible solution for building online communities, offering features like integrated spam protection, user management, and a plugin system for customization.

phpBB is a free and open-source bulletin board software written in the PHP programming language. It provides a robust platform for creating and managing online communities through discussion forums, enabling users to engage in conversations, share information, and build connections.

Twitter, now known as X, is a dynamic social platform enabling users to share short messages, engage in real-time conversations, and discover trending topics. It serves as a global town square for news, opinions, and connecting with communities.