[macedotavares]

Funny you should mention Hook. When I first heard about it, I made another Alfred workflow (called Rabbit Holes) that allowed me to gather related files, notes and bookmarks under a particular subject.

It relied on unique id numbers for each subject and an index file that listed them. For instance, if I wanted to associate a pdf to the subject "Hypertext", I would:

1. Select the pdf in Finder

2. Run the workflow and perform a fuzzy search on the index file

3. Find the subject and select it.

Then, the pdf's filename would be prefixed with the code corresponding to "Hypertext"; finally, a master note for "Hypertext" would be appended with the link to that file.

(This workflow also used Dropbox though. It would have been easier if it didn't.)

If you use Alfred (with Powerpack), I'm sure we can think of something that may at least look like an alternative to Hook.