If you are looking for a way to use Office without cost, or need to access legacy files, here are the current best options: 1. Official Free Alternatives from Microsoft
It is no longer possible to legally download for free from official sources. Microsoft officially ended support for this suite on October 10, 2017 , meaning it no longer receives security updates or technical support.
If you specifically want a desktop program that feels like older versions of Office, these free, open-source suites are highly compatible with .doc , .xls , and .ppt files: End of support for Office 2007