Google today launched separate add-on stores for its Google Docs and Sheets products. You can check out the two stores here: Docs and Sheets. To browse add-ons directly without navigating to the stores first, just hit “Get add-ons” in the Add-ons menu of any document or spreadsheet. Add-ons in the stores are created by developer partners that give users more features in their documents and spreadsheets. ) More to follow.