Google Sheets

Collaborating on the same spreadsheets with other people has never been easier. Now, with the help of the Google services, you get access to all of the major functions that you would expect from an application that deals with spreadsheets.
 
In fact, users can edit their work at any time, can share the link of the files with other people so that it can become a collaborative project. Support for Microsoft Excel files is fully integrated, which means that all you have to do is to copy them into your Google Driver account, and you’re good to go.
 
Google Sheets users will be able to do almost anything with their spreadsheets, including stuff like formatting cells, entering data, insert formulas and much more. Also, the fact that it’s all happening online means that the work is regularly saved, and users will never lose any of it.