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.
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.
WhatsApp for web is a platform independent messaging app which allows you to communicate for free.
Call anywhere in the US and Canada for free and get low rates for other countries with this small plug-in, right from within Gmail.
Store and sync your email, calendar, contacts, files and documents in the cloud - yet have them locally accessible and aggregate information across accounts like Yahoo! Mail, Gmail, Hotmail and social networks like Facebook and Twitter
WhatsApp for PC is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS.
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.
With Camfrog Video Chat you connect to video chat rooms & live webcams. You can chat with any of the online members, or go live and earn money.