I think Finder + Quick Look already suits your workflow?

Nevertheless, I do think you can give a try on References.Design. In fact, I just posted another thread about the new features in version 2.0

Basically, you can link your existing folders with the app and all the images will be scanned and shown in the app. You can double click on an image to view it in 100% scale (unless it is larger than the viewport, in that case the image will be scaled to fit).

We've built the user interface to be as little as possible, but it is not truly "frameless". There are still some basic controls there. To make it truly frameless, you can right click on an image and choose to Open in New Window, then it will show only the image itself with the system's "traffic lights" for window control. Again it will try to show the image in 100% scale unless it is larger than your screen size.

It may not fit for your workflow perfectly, but check the other features like aggregated online inspirations, smart content detecting and Inspire Me!, I think it will worth your time to at least have a try!

It goes into the app library in current version. Later we will also work on solutions to connect with your existing local libraries.

Cool! Unfortunately the MacAppstore doesn't offer the option of trial (Windows version does though). We are currently working hard on finalizing the Inspire Me feature and haven't had time to look at a trial solution yet. It is not perfect yet, but I hope you'll find it worth the invest with the upcoming updates!! Stay tuned :)

I had the same issue, that my collections were saved in so many different places (bookmarks, pinterest, dribbble, behance, evernote, etc.). While each of them serves their purpose and not really that one could or should replace another, still it could be frustrating trying to find the right content in the right place. Wouldn't it be nice if everything could be combined together? I mean, you still keep the accounts for each website/service, but have a central place to display everything altogether?

That's why I made References.Design (right, this is a promotion :), a place where you can browse all the online contents together, as well as manage and show all your local images.

It's actually still in early stage and haven't achieved the goals I set. But I guess it's better to start collecting other peoples feedback rather than hiding it for another 3 months. So, give it a shot and see if you'd like this concept?