Which is the best free application to open and edit Microsoft's office files (word, excel, ppt) in android?

pro office suite.............

I have Apple products, however I have had in the past android, so yes 

Polaris Office

and 

Pro Office Suite

Polaris office

Kingsoft office

Office suit

Till Now You Can Use Polaris Office app

and you can use Microsoft word & Excel & Powerpoint from this link :

1)  Join the community : https://plus.google.com/communities/020462) Become tester by visiting following links – http://aka.ms/previewword , http://aka.ms/previewexcel , http://aka.ms/previewpowerpoint

3) and download apps from this links :

https://play.google.com/apps/testing/com.microsoft.office.word

https://play.google.com/apps/testing/com.microsoft.office.excel

https://play.google.com/apps/testing/com.microsoft.office.powerpoint

i hope i could solve this .

There are many apps available on Google Play Store can do editing on "Word , excel , ppt and more" but i recommend {{Polaris Office app}}

I use Office Suit its very good

WPS office is very good application. One can do as desired, means he can create a document or edit any particular file.

you can use this App WPS Office + PDF or Polaris Office or Microsoft Office Mobile