Google Sheets

< Google producten
 * Website: https://www.google.com/intl/nl_nl/sheets/about/

To-do

 * http://www.trendmatcher.nl/2016/01/van-noord-holland-naar-nh-via-google.html
 * Pivot table: https://www.linkedin.com/pulse/pivot-table-edo-de-roo?