Managify - Create & organize all your documents in a single platform.
Files - Keep everything organized without breaking your flow. Dropbox brings your files together, in one central place. They're easy to find and safely synced across all your devices—so you can access them anytime, anywhere.
Xara Cloud - The simplest design tool for business documents
Filza File Manager - Explore files and folders with list view or grid view. View / edit files with powerful viewers.
Sismics Docs - Lightweight full-featured document management system 📁
FileApp - FileApp is an iPhone and iPad File System and Document Viewer.