If you are a data analyst that wants to access your data with SQL check Mode Analytics and Periscope. for open source kind check Re:dash
If you need quick, useful and beautiful dashboards check Geckoboard and Geckoboard. Want to take it a bit further? Check Leftronic and Klipfolio.
Not an SQL-savvy user? Check Chartio
Are you a data analyst that wants to easily explore your data sets? Check Looker
Want to have the best visualizations? Check Tableau.
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