Must have extensions for Google Chrome

1. Camelizer

Easily see prize history of any Amazon product. This extension is developed by Camel Camel.com

2. Netflix Party

It lets you watch netflix with your friends at the same time.

3. Google Dictionary

Double click any word to see its meaning.

4. Momentum

To increase productivity

5. Google Cast

For obvious reasons

6. Flashcontrol

Prevents flash content from loading.

7. Imagus

 enlarge thumbnails and show images from links by hovering your mouse over them 

8. Alientube

It replaces youtube comment with Reddit comments.

9. Save to Pocket

To save to Pocket

10. Honey

Collects coupon codes  for the site you are visiting.