iPhone Apps to Threaded Conversations

Gmail, a cornerstone of Google's productivity suite, is a free, web-based email service renowned for its intelligent organization, powerful search capabilities, and integration with other Google services. Available across various platforms, it remains a leading choice for personal and professional communication.

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.

Zulip is a powerful open-source group chat application designed for team collaboration. It uniquely structures conversations around topics, enabling users to easily catch up on important discussions and manage information overload. Zulip facilitates secure communication with integrated file sharing and various integrations.

Campfire is a web-based team collaboration and communication tool designed for real-time group chat and project-based communication. It simplifies online collaboration through dedicated chat rooms, file sharing, and integration with various business applications.

Fleep is a business communication platform designed for teams of all sizes, facilitating collaboration within and across organizations through a combination of chat, task management, and file sharing.

Flock is a comprehensive communication and collaboration platform designed for teams. It streamlines workflow and enhances productivity through integrated messaging, project management tools, and seamless file sharing within a secure environment.

Tango is a comprehensive communication platform that offers free messaging, high-quality video and voice calls, and features for discovering and connecting with new people. It integrates social elements like photo sharing and groups, alongside essential security and privacy features.

Rocket.Chat is a comprehensive free and open-source team communication platform, offering real-time chat, audio/video conferencing, screen sharing, and file sharing. Designed for flexibility, it can be self-hosted on-premises for maximum control and customization, making it ideal for organizations prioritizing data privacy and security.

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.

HipChat is a team collaboration tool offering real-time messaging, video conferencing, and file sharing for enhanced internal communication and project coordination.

ICQ is a veteran instant messaging platform offering a wide range of communication features, including text chat, voice and video calls, screen sharing, and group chats. It aims to provide a reliable and feature-rich messaging experience with a focus on privacy and security.

Echofon is a streamlined Twitter client known for its speed and efficient synchronization across various devices. It provides a clean interface and essential features for managing multiple Twitter accounts.

Mattermost is an open-source, self-hosted platform for secure team collaboration, offering a Slack-alternative with emphasis on data control, privacy, and customizability. It provides a range of communication and project management tools for distributed and technical teams.

Newton is a powerful, subscription-based email client designed for efficiency and productivity across multiple platforms. It offers a clean interface, unified inbox, and advanced features like read receipts, undo send, and integrations with popular productivity tools.

Glip, by RingCentral, is a comprehensive team collaboration platform combining real-time messaging, video calls, task management, and file sharing into a single, searchable hub. Designed to streamline communication and workflow, it aims to replace disjointed tools with a unified digital workspace.

Trillian is a versatile, multi-protocol instant messaging client that unifies various communication platforms like IRC, XMPP, and more into a single, user-friendly interface. It's designed for both personal and team collaboration, offering features like encrypted chats, group collaboration tools, and extensive customization options.

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.

Google Plus was a social networking service operated by Google. It aimed to integrate various Google services and create a more unified social experience around content sharing and community building.

Facebook is a leading social networking service connecting billions of people worldwide. It enables users to share updates, photos, videos, and links with friends and family, discover communities, and access news and entertainment content.

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.

Voxeet is a robust web conferencing platform that elevates virtual collaboration with its unique high-definition 3D audio technology, providing an immersive meeting experience. It offers a comprehensive suite of communication tools, including video conferencing, screen sharing, integrated file sharing, and various chat functionalities, designed to facilitate seamless interaction for teams of all sizes.