Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
Dialog Messenger - handy and feature-rich enterprise multi-device messenger available for server or cloud – Slack-like, but not Slack-limited
LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.
Ripcord - A desktop chat client for Discord and Slack
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
Done Hui - No need to switch between multiple pieces of software to get through the workday. CHATS: Communicate freely. CALENDAR: Know your team's availability, plan meetings. No more conflicts. TO-DOs: Stay on top of all projects. FILES: All files, one spot.