Google Talk
Call or send instant messages. Google Talk has been replaced by Google Hangouts as an add-on for the Chrome browser, but it's still available here for download.
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.
Zoom is an easy, reliable cloud platform for video and audio conferencing, chat, and webinars across mobile, desktop, and room systems.
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.
All-in-one voice and text chat for gamers that's free, secure, and works on both your desktop and phone.
Slack simplifies business communication. It brings all your team's communication together, giving everyone a shared workspace where conversations are organized and accessible.
Lightweight, customizable mail client