I have a problem syncing my Pixave iPad library with the desktop version. After several messages to the developer over the last few weeks I have had no reply. Rather a shame as I have been using Pixave for many years.
Leap - With Leap you find things based on your natural memory of that file.
Eagle App - Unify your creative inspiration in one place. Store anything – inspiring images, design mockups, illustrations, screenshots and more.
DEVONthink - DEVONtechnologies develops DEVONthink, DEVONagent, and other Mac and iOS apps for document and information management and web research.
Inboard - Inboard is a Mac desktop application that helps organize your images. Perfected workflow
Elyse - The free version allows up to 30 tags.
Sparkbox - Everyone cares about the homepage, but the truth is that it can be a big time suck without a lot of benefit when you tackle it at the beginning of a project.