Thanks for this. I'll give it a try, though I'm not someone who experiences much frustration with Finder, because I maintain a solid folder structure, and use Alfred (first) for virtually all file interactions.

The deciders for me, in case you're interested:

- Privacy. It doesn't look like you are trying to get my data. I'll be using network monitoring to verify.

- Automatically groups like files, regardless of file location. Yes, I know I can do this manually with tags, but I... don't.

- Polish. The screenshots make it look like a native interface. Bonus points if I can set it to hide until mouseover, like my dock bar.

I'm most curious about how it will function alongside Dropbox, particularly with cloud-stored files. I have several times my HDD in Dropbox (largely in folders shared with me); I know Keptor won't be able to read stub files, but if it greedily downloads and fills up my HDD it'll be an instant day-killer and uninstall. If it reads on-device files, and then stores a sparse representation so it can still present them in a list once they've been removed to the cloud it'll be great; I will manually sync and de-sync some folders to get them into the data. (If it incrementally syncs cloud files to my device, reads them, and then pushes them back up it'd be amazing, and I'll buy a lifetime license immediately - but I'm not sure those permissions exist.)