- Team Dashboard - http://fdietz.github.io/team_dashboard/
- Geckoboard - http://www.geckoboard.com/ - Slick data dashboards.
- Leftronic - https://www.leftronic.com/ - Similar, doesn't seem quite as organised looking
- Dashing - http://shopify.github.io/dashing/ - Simple metric dashboards by Shopify. Widget list
- HighCharts - http://www.highcharts.com/ Not very inspiring but very widely used & performant
- Google Charts - https://developers.google.com/chart/ Again, not very inspiring but can be customised
- Flot - http://www.flotcharts.org/ Gorgeous slick HTML5 graphs