Open Office VS Micro$oft Office

Is there a compatibility problem?
In other words, are the files from one readable by the other and is
the rendering (essentially) the same?
Or are they totally different except for use?

 

Open Office will read Microsoft Office files and save in Microsoft format.
OO easily reads PowerPoint, Excel and Word documents, but I don't believe
Microsoft reads any of the OO file formats, so if you want compatibility
with Microsoft you have to save your Open Office files in a Microsoft
format.

 

Support the freeware, use OO.