PictureRelate compares pictures by similarity. Of course computers cant understand whats in a picture. Pattern recognition and photo analysis has tried for many decades and has failed, so far. But there are some basic photo properties that can be analyzed by a computer. PictureRelate uses a set of such options to classify images. These options were designed to mimic the human eye, i.e. they use what neurologists like to call pop-out features. The human brain uses pop-out options to search interesting visual elements fast. So a major benefit of using this technique is: it is fast! Using a large number of such options and combining them in a weighted way often gives surprisingly good results. Therefore I decided to publish my experimental program as a technology demonstrator. Try it! With a bit of experience you can browse pictures on your hard disk and from the web by similarity using a picture close to what you are looking for, adjusting feature weights to fit your criterias, select a more similar picture, and repeat this process. As an additional benefit you can search for duplicate pictures, which have a different photo format, or different size, or even for duplicates which have different text stamped into the image. You can make mosaic pictures made out of other pictures. For ease of use PictureRelate supports browsing, viewing, renaming, deleting, etc. You can copy and paste and drag and drop photos from PictureRelate to other applications or to the desktop and from other applications and the explorer into PictureRelate. PictureRelate reads all major picture formats like JPG, BMP, PNG and TIFF. Other picture formats can be easily imported once you did install a filter command. Examples for using IrfanView and XnViews NConvert are supplied. PictureRelate is specifically designed to work with a large number of pictures. 100.000 and more pictures are still searchable easily and fast on a modern PC, once the database is built.