Eagle App - Unify your creative inspiration in one place. Store anything – inspiring images, design mockups, illustrations, screenshots and more.
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Pixave - The ultimate image organizer for the Mac.
Tabbles - Tabbles use tags to organize and find files along with your colleagues.
EagleFiler - EagleFiler makes managing your information easy.
allTags - allTags is a free, tag based file management application.