Q-Stats - Get free marketing insights for every question on Quora.

iLend - Keep track of the things you lend and borrow.

Site Rank Data - View historical rank information of websites via time series charts.

Crowddy - A crowdfunding platform for american students in debt

Seoxan - check seo report for any website, alexa ranking, server information, meta tags, authority, page speed and more

Masterworks - Invest in the world’s most valuable paintings.