Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.
draw.io - Online diagramming application
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.