Apps to Private messaging

Plurk is a distinctive social networking and micro-blogging platform known for its real-time activity stream presented as a horizontal timeline. It emphasizes threaded conversations, allowing users to follow specific discussion branches. With a focus on user privacy and ad-free experience, it offers a refreshing alternative to mainstream social media.

TalentLMS is a powerful, yet simple-to-use SaaS learning management system designed for employee training, partner training, and customer training. It offers a user-friendly interface and a comprehensive suite of features for creating, managing, and delivering online courses.

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.

Musteus is a decentralized, privacy-focused social media platform designed for secure and controlled social networking and communication. It supports self-hosting and integration with other platforms, offering a robust alternative to mainstream social networks.

Mibbit is a popular web-based IRC client that allows users to connect to various IRC networks and channels directly through their web browser. It eliminates the need for dedicated client software installation and offers a user-friendly interface for real-time text communication.

XenForo is a powerful and flexible internet forum software built with PHP and the Zend Framework. With its modern feature set, robust architecture, and extensive customization options, it provides a solid foundation for building thriving online communities.

Soup.io is a microblogging and social networking platform based in Austria, designed for easily sharing and discovering rich media content in a tumblelog format. It emphasizes user privacy and free expression.

myVLE was a free, powerful, and easy-to-deploy Course Management System (CMS) designed for various educational and training scenarios. It offered a comprehensive suite of tools for online learning environments.

Hubski is a community-driven platform focusing on sharing and discussing thoughtful content, emphasizing quality conversations over virality.

LiveTalkie is a robust, free, and decentralized social media platform offering a private, secure, and ad-free environment for communication, content sharing, and community engagement.

Sicher is a freeware instant messaging application designed for enhanced privacy and security on mobile platforms like iOS, Android, and Windows Phone. It offers end-to-end encrypted messaging, secure file and media sharing, and features like self-destructing messages, focusing on keeping your conversations private.

Movim is a distributed social network platform leveraging the open XMPP protocol. It provides a decentralized environment for users to connect, share content, and communicate through chat and group messaging, offering an alternative to centralized social media.

Chamilo is a free, open-source learning management system (LMS) designed to improve access to education. It offers a comprehensive suite of tools for creating, managing, and delivering online courses and training programs, suitable for educational institutions and corporate environments alike.

Libertree is a free, libre, and open-source software platform designed to empower individuals and groups to create their own decentralized social networks. It offers a comprehensive suite of communication and community-building tools, prioritizing user control, privacy, and freedom of expression.

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.

Ello is a unique community-driven social network dedicated to connecting creators with their audience in an ad-free, privacy-focused environment. It emphasizes creative expression, meaningful interaction, and celebrating the things you are truly passionate about.

Moodle is a widely adopted, open-source Learning Management System (LMS) designed to provide educators, administrators, and learners with a single, robust, and secure system to create personalized learning environments. It facilitates online learning, blended learning, and distance education with a comprehensive set of tools for course creation, delivery, and management.

BuddyPress is a robust, free, and open-source social networking software that integrates seamlessly with WordPress. It allows you to build a fully-featured community website with user profiles, activity streams, groups, and private messaging, providing a decentralized and self-hosted alternative to traditional social platforms.

Identi.ca is a free and open-source decentralized social networking and microblogging service built on the pump.io software and Activity Streams protocol.

Known is a decentralized publishing platform built on the principles of the IndieWeb, empowering users to own their content and data. It offers a versatile environment for blogging, photo sharing, and social networking with a focus on user control and privacy.

MetroTwit was a Windows-based Twitter client celebrated for its clean, minimalist design inspired by the Metro UI. It offered core Twitter functionalities like timeline browsing, replying, direct messaging, and searching, aiming for a streamlined user experience.

Minds is an open-source and decentralized social networking service dedicated to online freedom, privacy, and monetization for content creators. It champions free speech and offers a platform that rewards users for engagement through a points and token system.

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.

Whaller is a secure and private team collaboration platform that enables organizations to create their own internal social networks, ensuring data privacy and control away from public social media platforms. It offers a comprehensive suite of tools for communication, file sharing, task management, and project organization.

Facebook Messenger is the official messaging application from Facebook, enabling users to connect with friends and family through text, voice, and video calls, as well as group conversations and media sharing.

Diaspora is a user-owned, nonprofit, and decentralized social network based on the free Diaspora software. It aims to provide a privacy-focused alternative to traditional social media platforms, empowering users through distributed infrastructure and a focus on community control.

Snapchat is a dynamic mobile application renowned for its ephemeral messaging and creative filters. It allows users to share photos and videos, enhanced with augmented reality lenses and effects, that disappear after viewing. Beyond simple communication, it offers features like Stories, Discover for news and entertainment, and Snap Map for location sharing.

GNU social is a free and open-source social networking software that empowers users to create decentralized, federated social networks. It offers a privacy-focused platform for public and private communication, emphasizing free speech and user control.