Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
Better Proposals - A simple tool to help you send better proposals to your clients.
LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.
Ignition App - Reclaim time, profitability and cash flow with Ignition by automating proposals, billing, payment collection and workflows in a single platform.
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
Mimiran - Fun, "anti-CRM" for independent consultants who hate "selling".