Google Sheets
Going back to Google’s online apps, Google Sheets is the best alternative for people who need to use Microsoft Excel.
Just like Docs, Google Sheets stands out for how easy it is to access. All you need to do to open it is your own Gmail account. Afterward, you can access, edit, and share all your files on the cloud without paying.
Additionally, you can also save your work as a PDF file or as an Excel document, making it easier for all your coworkers to access your files no matter what operating system they use.