Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.

Silicon Valley Dictionary - Urban dictionary meets Silicon Valley

LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.

Writefull Thesaurus - A Google Docs add-on that uses AI to give you synonyms

Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.

Dictionary Anywhere - Dictionary Anywhere is an open-source and easy-to-use browser extension for Mozilla Firefox and Google Chrome that allows you to check definitions easily while browsing the web.