Google Drive is a cloud storage and backup platform to access files, docs, photos & more, store them in a safe place, and collaborate with other people.
Zoho Docs is used to store documents in the cloud, share files securely, create word documents, spreadsheets & presentations, and sync files across devices.
Zoho is an web-based online office suite containing word processing, spreadsheets, presentations, databases, note-taking, wikis, web conferencing, customer relationship management, project management, invoicing and other applications developed by Zoho Corporation.