Computer Help and Support

Let me say that I'm an IT guy, and I enjoy helping people, so feel free to PM me with any such inquiries. I really don't mind!

So to answer your question, the difference between OneDrive and GoogleDrive is that the former is owned by Microsoft and the latter owned by Google. Otherwise, they provide essentially the same service, it's just the "who" and "where" that's different, along of course with whatever differences there may be in their EULAs (end user license agreements).

Google Docs, on the other hand, is a combination of cloud service and SaaS (software as a service).

Google Drive is essentially only a virtual hard drive, and cares nothing about what's stored on it.

Google Docs provides the web applications similar to Excel, Word, PowerPoint, etc., and it can store its own documents, separately from Google Drive.