Issuu - Issuu is the leading digital publishing platform delivering exceptional reading experiences of magazines, catalogs, and newspapers.
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
Scribd - Unlimited books, audiobooks & comics. Unparalleled discovery. Any device. $8.99/month
LibreOffice - Calc - LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.
Magzter - Magzter is the world's largest digital magazine newsstand with over 10,000+ magazines in its catalogue. Read them anytime and anywhere on iPad, iPhone, Android devices and the web.
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.