ManyCam Virtual Webcam
Add cool live effects and funny graphics such as sunglasses or hats to a webcam's output.
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.
Slack simplifies business communication. It brings all your team's communication together, giving everyone a shared workspace where conversations are organized and accessible.
WhatsApp for PC is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS.
Zoom is an easy, reliable cloud platform for video and audio conferencing, chat, and webinars across mobile, desktop, and room systems.
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.
Facebook Messenger for anyone who wants to have persistent access to Facebook chat.
AresGalaxy is a Filesharing Bittorrent P2P client that works even behind firewalls.