There are number of resources available in the market. Few of them are mentioned here.

Xlabsgaze

Ongoing development for web developers which is free to use software at the moment. It provides a real time tracking without restricting user movements.

Price: Free download

Sticky

It is another plateform for measuring eye movements. It gives marketers more power than ever before to pre-test and optimize the success of a campaign before launching.

Price: From 225$

Gazehawk

Using webcam tracking device, Gazehawk can use their own participant to test your website or they give you the option of picking your participants.

They send you the results of visual heatmaps to help you improve display of your website.

Price: You can request a quote. Now acquired by Facebook.

Looktracker

It provides you a 3 to 8 subject visual tracking focus study of your website which you can use to improve conversions and sales.

Price: 109.9$ per study.

Gazept

It is a good software for web designer and developer. It helps you create heatmaps and fixation maps in a short time.

It also provides you with eye gaze recording, mouseclicks, pupil reaction, scrolling data.

Price: From 495$.