The odt files are the document files that you create on the linux based Ubuntu operating system. If you need to view it on your Mac system you can easily transfer and view it. You can even edit it from the Mac, however the odt file can crash on the Mac system and you will not be able to access it again because it has gone corrupted. This might be an important file and you don't want to lose it. You can try to get bask the crashed ODT file with help of the AutoRecovery option present in the iWork Office suite of Mac but sometimes it does not work properly and you can not recover the files. The Mac data recovery software can help you in this situation which can scan the whole Mac drive for the corrupted odt file and the list will be shown in the preview and then the select the file to repair and recover. The software is very easy to operate and the files will be stored at your given location. You can access and edit the file after you recover crashed ODT files on Mac. So downlaod the software and use it now.