File Station will display all your files according to type: text files, PDFs, pictures, audio, video, office documents, even custom searches. It also lets you sort the list according to name, size, modified date and most used folders.
Don't bother with a file system, just get the document you're looking for.
If you like this app, please consider buying the Plus version for an ad free experience.
Tags: file manager, file explorer, file search, documents, document sort, document database, sdcard manager, file browser, file viewer