DocuCan

DocuCan is a program designed for clear document management. It offers you easy search thanks to support for tagging individual files. It also features an integrated viewer and editor, so there is no need to manually open other applications to make edits. It allows you to import documents in bulk, and can also handle PDF, Word, Excel, RTF, Text, JPG, GIF, TIF file formats that you open within the native application window.