Cortex extension for Chrome allows to share links, articles, videos across other social networking sites fast with in seconds. After installing this extension, you need to allow Cortex to connect your accounts on social sites such as Twitter,  Facebook,  Tumbler and Instapaper  more services will be added in the future.

Cortex For Chrome

After you connected those services, whenever you need to share page or video or link, select the content and hold your mouse, a wheel of options appears around the mouse pointer to share, direct to site you want to share on for example on twitter icon, release the finger. Your content will be shared to that service with two seconds, that’s fast from Cortex.

Cortex  was launched along with Chrome Web store.

Cortex Chrome extension        via [Mashable]