Acorns - Automated portfolio management monitoring your investments
Google Charts - Interactive charts for browsers and mobile devices.
Wealthfront - Automated, low cost investment service
ZingChart - ZingChart is a fast, modern, powerful JavaScript charting library for building animated, interactive charts and graphs. Bring on the big data!
Ark7 - Choose a property and invest in shares
Highcharts - A charting library written in pure JavaScript, offering an easy way of adding interactive charts to your web site or web application