LendList - Never again forget what you borrowed from someone and keep track of what your friends borrowed from you (Android app). - raphaelm/lendlist
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
thangs - thangs simplifies and encourages the lending and borrowing of everyday objects.
LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.
Who Has My Stuff - undefined
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.