Microsoft Office, is no doubt, one of the most popular office suite of desktop applications, servers and services for both Microsoft Windows and OS X Operating Systems. It also runs on various devices with its Office Mobile for Windows Phone, Android Phones and also for iPhone. While, the version of Office for iPad was launched in March 2014. A web-based version of MsOffice called Office Online is also available.
But, if you can not afford the price you have to pay to obtain the license, I think Kingsoft Office may become one of the best alternative for freeware office app.
Kingsoft Office, or now called WPS Office, is 100% free to use. PC World crowned it as the best Microsoft Office alternative (read the review in here). CNET also championed Kingsoft Office Free 2012 as one of the top Microsoft Office alternatives for Windows (read the review further in here). Based on its official website, this office suite already used by over 250 million Windows users worldwide. With its latest version of WPS Office 2014 (beta), it supports Windows XP, Windows Vista, Windows 7 and Windows 8 as well. Other than Windows, it also available for another Operating Systems such as Linux, iOS and Android.
WPS Office is fully compatible with Microsoft Excel, Word and PowerPoint. It supports DOC, XLS, PPT, TXT files (Read further in here).
In the recently-released new version of WPS Office 2014 (Version 18.104.22.16846), it already bundled with the new feature called File Roaming.
What is File Roaming ? As described within the official website, by using File Roaming, once you open a document in WPS Office, it will be automatically saved in WPS Cloud. You can access the same document to view and edit it when you log in to WPS Office in other devices. Read further how to use File Roaming feature of WPS Office : in here
Read also the latest review of WPS Office by CNET : WPS Office: The best free office suite since Kingsoft