https://www.4shared.com/faq.jsp
4shared - free file sharing and storage - FAQ
Online file sharing and storage - 15 GB free web space. Easy registration. File upload progressor. Multiple file transfer. Fast download.
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https://www.zotero.org/support/storage_faq
storage_faq [Zotero Documentation]
Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
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https://iwantempire.freshdesk.com/support/solutions/articles/44001686002-free-cloud-storage
Free Cloud Storage : iWantClips FAQ
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