MailStore - MailStore Home - A 100% free single-private-user desktop solution
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
Hornetsecurity Email Archiving - Hornetsecurity Email Archiving is one of the advanced software that offers long-term, unchangeable, and secure storage of important company information, data, and flies.
LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.
Intradyn Email Archiver - Orca Email Archiver provides email archiving solution for local government and business.
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.