TeamSpeak

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Steam

A VoIP application and platform designed for creating communities and connecting gamers, and people rallying around specific causes. The Discord client is a free to use and can handle text, image, video and audio communication between users in a chat channel. Currently over 250 million users use the software to connect with others across the globe.

Skype is a telecommunications application that specialize in providing video chat and voice calls between computers, tablets, mobile devices and consoles. The software allows you to connect with friends and business colleges worldwide. Skype provides free online calls, messaging, affordable international calling to mobiles or landlines and Skype for Business for effective collaboration among teams.

Mumble is a free and open-source voice over IP application primarily designed for gamers. The application features a customizable in game overlay, application skins, conversation recording, and advanced voice activity detection. Anyone can download and use Mumble for free, but if you want your own server, you can rent a managed solution from the company behind Mumble, or host your own.

Epic Games Store is marketplace for digital games. The Epic Game Store is availible via the browser or within the Epic Games launcher. Developers who release games within the store receive 88% of the revenue generated from the game, which is drastically better than other stores.  This help developers sustain their business model, and ultimatley create more or better games. 

Stadia is a subscription-based gaming platform that allows you to play all titles in their library of games. Stadia is developed by Google and allows you play games instantly with one click of a button. To be able to play games on Stadia you need to have Stadia Controller and subscription to the service Stadia Pro. No purchase of console is required since Stadia streams all games to you from the cloud.

An open indie game marketplace that makes it simple to find, download and distribute indie games online. With itch.io, gamers can choose from over 100,000 titles uploaded by indie developers from all across the globe. As a developer you can use itch.io to create a page for your game, where you can distribute your game and provide gamers with the latest news and media surrounding the game an its releases.