Dialog Messenger Alternatives for iPhone

Gmail is Google's email platform which is free for personal use. It is currently one of the most popular and widely used email platform which as clients for almost every popular platforms.

Skype is an instant messaging and VOIP (Voice Over Internet Protocol) client to communicate with people in a distant place.

Hangouts is an instant messaging software developed by Google.

WhatsApp Messenger is an instant messaging platform owned by Facebook.

Slack is a cloud-based team collaboration tool.

Mumble is an open source, low-latency, high quality voice chat software primarily intended for use while gaming.

Asana is a web and mobile application designed to help teams track their work.

Tox is a peer-to-peer instant-messaging and video-calling protocol that offers end-to-end encryption.

Viber Free Messenger and Phone Calls.

Discord is a freeware proprietary VoIP application designed for gaming communities.

Signal is the most scalable encryption tool.

Facebook Messenger is the official Facebook app that lets you have text conversations with all of your friends on the popular social network.

Glip is fully searchable, real-time group chat; video chat, task management, file sharing app.

TeamSpeak is software for quality voice communication via the Internet.

LINE is a new communication app which allows you to make free voice calls and send free messages whenever and wherever you are.

Mattermost is an open source, private cloud Slack-alternative, Workplace messaging for web, PCs and phones. MIT-licensed.

Wire is a cross-platform, encrypted instant messaging client created by Wire Swiss. It is available for iOS, Android, Linux, Windows, macOS and Web browser clients.

ICQ is an open source instant messaging software.

FaceTime is a proprietary videotelephony product developed by Apple Inc. FaceTime Audio is an audio-only version.

Zoho Mail is a email service with ample storage, POP and IMAP access, some integration with instant messaging and online office suites.

WeChat is a social media with instant messaging, commerce and payment services application.

Rocket.Chat free open source chat solution.

appear.in provides one-click video conferences right in your browser without requiring PIN codes or additional software.

eXo Platform is an open source, standard-based, Enterprise Social Collaboration Platform.

Bitrix24 is a free (for small businesses) social enterprise platform.

Matrix is an open protocol for real-time communication. It is designed to allow users with accounts at one communications service provider to communicate with users of a different service provider via online chat, Voice over IP, and Videotelephony.

Tango is the messaging app with the best video calling. All messages and calls are free.

GoToMeeting provides easy online meetings with HD video conferencing.

TribeScale is an All-in-One platform to coordinate your team around what really matters - communication, goals, decisions, tasks and results.

Curse is an online game portal and network of gaming websites.

Flock is a communication app for teams. Packed with tons of productivity features, Flock drives efficiency and boosts speed of execution.

Grape is an REST-like API framework for Ruby. It's designed to run on Rack or complement existing web application frameworks such as Rails and Sinatra by providing a simple DSL to easily develop RESTful APIs.

Fleep enables communication within and across organizations, be it your team chats, project communication or 1:1 conversations.

Jostle is a people engagement platform mainly focused on employee engagement.

Zulip is a chat and collaborative software.

Gitter is an open source instant messaging and chat room system for developers and users of GitHub repositories.