Here are the major apps provided by Microsoft Office:
Google Docs
Using the Google Docs app, you can create word processing documents, spreadsheets, presentations and drawings. It is a browser-based application; hence it doesn’t have full features as some other suites have. The best part is this application is free and you need to install anything on your computer. You can easily use Google Docs to create or edit Microsoft Office documents.

Libre Office
It is also a free productivity suite which can be used as an alternative for Microsoft Office. This application offers a word processor, a spreadsheet, a presentation application, a drawing tool, and a database application. Its launch screen is as similar to that of the Apache Open Office. Also, the Libre Office supports using Open Office documents. In case you face any problems with this app, you can call at the Microsoft Help Number for unlimited tech support.

Kingdom Office Suite Free 2012
It is a free office suite and the free version will offer you with a word processor, a spreadsheet, and a presentation application. These applications are similar to Office 2010 applications and support the use of Office documents along with its own file format. It also supports the standard file types such as RTF, TXT and HTML.

Apache Open Office
It is a free office suite which can help you to create text documents, spreadsheets, presentations, drawings and formulas. Open Office is easy to use if you know how to use Office 2010. The word processor and spreadsheet can be similarly used as Word and Excel. Also, the presentation application has similar controls as PowerPoint but looks different. This suite allows you to open Microsoft Office documents and other popular file formats.

Office Web app
It is an alternative to an on-premise Microsoft Office deployment. It includes Word, Excel, PowerPoint, and OneNote. You will also get 7GB free storage space on Sky Drive where you can store your Office Web App documents. It has not great features as Office 2010 or Office 2013 but still, it is very useful.
For help and support regarding any of the Microsoft app, you can simply dial the Microsoft Support Phone Number where a number of technical executives are available. They will provide you with guaranteed and genuine tech support for various Microsoft related technical problems. The tech support team can be contacted anytime as they are always ready to help you out with the best of technical solutions.
For More Info: https://www.800customerservicenumber.com/microsoft-support-number/