RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
you-tldr - Get the tldr of any YouTube video in seconds
Rakuten - Feel the Joy of Cash Back. Find coupons and Cash Back in just 1 click with the Rakuten browser extension
tubecut. - The only YouTube downloader allows you to trim specific time
Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.
Matstad - A Reddit style YouTube app