yup, i was about to say that... ;p
It's good for light use, like i do... batch resizing, rename....

you could also try the XYplorer, it's a nice, complete (and a little complex) Win explorer replacement... but it's paid... (you can use a limited trial)

The one I use is Visipics, but I don't think it has the folder comparison you wanted.

Oddly enough, the last version is from 2008, but it seems to be still ailve. Still works perfectly on Windows 7, anyway.

EDIT: Wait, it does have a "between folders only" option, so there you go, I think.

Thanks, Drakhyrr! Tonight I'll put it to the test.

Any other option, mates? :)

More suggestions, please?

So far, no ideal program for the task, although Visipics and Anti-Twin are close to what I'm looking for.

If only they had a full screen comparison mode (so that you could change the view between an image and its duplicate to detect small differences between them) and a more user-friendly way to rename or move out pics!

As for Beyond Compare & FastStone, they only compare a single picture against another (and you must provide the path to both images).

BUMP!

Any last suggestion? ;)

Since the last entry, I've been testing some programs. I leave here the results, hope they serve to help someone with the same problem.

TL;DR: The best among the tested in the list below would be Awesome Duplicate Photo Finder, FirmTools Duplicate Photo Finder or even Img Search.

Still looking for the ideal program... :)

---

The folder used for the tests was a directory with 975 pictures (mostly color illustrations, with a percentage of 5% in B&W illustrations and sketches), scanned repeatedly by other programs (Visipics & Anti-Twin) until they found no more similarities.

Awesome Duplicate Photo Finder
- found 227 similar groups with 454 images (without a single false positive)
- very fast / almost no configuration options

Detwinner (trial version)
- with 80% sensitivity, 69 groups with 147 found similar images (8 false positives: B&W drawings)
- no options to rename or move, just delete, list of results very unfriendly
- trial limited to 1000 images

DupKiller
- scans only whole logical drives --> not tested.

Duplicate Cleaner Free
- free version has no image search --> not tested.

Duplicate Images Finder
- very slow and strong use of CPU --> not tested.
- consist only on a small window that lets you choose the directory to scan

FirmTools Duplicate Photo Finder
- found 98 groups with 198 similar images (without a single false positive)
- no rename option, trial version can't move or delete the duplicates found
- very fast

Image Deduplicator
- found only one group with 2 similar images
- half translated into English, the rest in German

Img Search
- 2002 program with Windows 95 interface (uses the PC speaker to beep when it find a duplicate)
- with 85% sensitivity (default) found 80 groups with 168 similar images (one false positive)
- with 75% sensitivity found 89 groups with 190 similar images (13 false positives)

Picture Relate
- took a long time to read the directory, but is quick to search it
- allows to change the sensitivity and search again on the fly (without repeating the directory reading)
- option to compare the images found in full screen
- 12 groups of 2-3 images each, other group with many false positives (over 50 B&W drawings)

Similar Images
- groups of similar images presented consecutively, rather than a list of all them
- with a threshold of 35% (default) found 20 groups with 40 similar images (3 false positives: B & W drawings-)

Interesting to read. So, what would be your freeware recommendation so far which I can bookmark now and later recommend others to steal all the credits ;-)

Very nice your research thesp, maybe i'll bookmark and use it later... ;p


edit: hey! But not with the same purpose of NukeDukem... o/

Undoubtedly, Awesome Duplicate Photo Finder :D

See above. ;)

Always a pleasure to make business with you, but I'm sorry, I have to leave now...

Nah, thanks for testing and sharing the knowledge. Always interesting to read such comparison tests.

I have no experience with your query other than to suggest alternativeto.net; if you haven't already.

http://alternativeto.net/software/awesome-duplicate-photo-finder/

Thanks for the reply, Porkdish!

In fact, it was through alternativeto.net how I found the programs listed above. :)

Who would have thought that I would be so difficult to find a software that met my expectations!