LoveSales - Find and save products you love, get alerted when they go on sale.
Tab for a Cause - Raise money for charity with each new tab you open
TrackIf - Alerts you if the price of your favorite products drop
Ecosia - Ecosia is a green search engine that donates at least 80% of its profits from search ad revenue and...
Giftwhale - Giftwhale allows you to create personalised wish lists online.
Dollar A Day - Automatically donate $1 a day to featured nonprofits.