WeChat is a free messaging & calling app that allows you to easily connect with family & friends across countries.
It’s the all-in-one communications app for free text (SMS/MMS), voice & video calls, moments, photo sharing, and games.
WhatsApp for PC is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS.
Share photos, videos, music, files, documents and more between all of your devices. File sharing from phone to PC, phone to phone, PC to phone, PC to tablet.
Open Broadcaster Software Studio is cross platform software intended for recording and streaming video from one or more sources, such as webcam, microphone, media files and the desktop.
Free calls to regular phones (+ mobile in US) over the internet
Lightweight, customizable mail client
WhatsApp for web is a platform independent messaging app which allows you to communicate for free.
Microsoft Teams is the hub for team collaboration in Office 365 that integrates the people, content, and tools your team needs to be more engaged and effective.