Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
LendList - Never again forget what you borrowed from someone and keep track of what your friends borrowed from you (Android app). - raphaelm/lendlist
Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
You Borrowed It - Keep track of who borrowed what and when you can expect it back
Apple Numbers - Numbers lets you build beautiful spreadsheets on a Mac, iPad, or iPhone — or on a PC using iWork for iCloud. And it’s compatible with Apple Pencil.
Outdoorsy - Find the best RV rental