Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.
Slickdeals.net - Slickdeals: The Best Deals, Coupons & Discounts on everything
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.