Pretty Links - The easy way to customize Facebook link previews
Affilimate - Track your affiliate links and commissions in a single dashboard and increase revenue with a data-driven strategy.
Polr - An open source URL shortener. A great non-profit and free alternative to bit.ly, TinyURL, or goo.gl.
Ow.ly - Shorten links, measure traffic, and demonstrate social ROI right inside the Hootsuite dashboard.