Medium API - Official Medium API
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
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LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.
Characters - Characters makes it easy for writers, designers and developers to access special characters. They are easily found and copied to your clipboard, either as html code or as the character itself.
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.