Poet.so - Capture and share Twitter posts as beautiful images
RealEye - Online Research Platform with Webcam Eye-Tracking.
Snap a Tweet - Snap a tweet with this little tweet screenshot tool.
Tobii Pro Lab - Eye tracking software for behavior research. Combination with other physiological data while you design, execute, and analyze with heat maps, gaze plots.
X (Twitter) - Connect with your friends and other fascinating people. Get in-the-moment updates on the things that interest you. And watch events unfold, in real time, from every angle.
SeeSo.io - SeeSo, the real-time eye tracking SDK for the smartphone/tablet/laptop environment. With a users' vision, reach beyond the vision.