Style is a Prisma-like tool for transforming images into works of art using various classic styles.
The program is easy to install on a Mac, but we found the Windows setup gave us repeated error messages. Fortunately it pointed us to a log saying "An error occurred trying to download 'https://style.hunterinthewoods.com/Style.application'", and when we manually pointed Internet Explorer at the file it downloaded and installed correctly. (If you're using another browser, the file downloads and you must double-click it to install.)
Style has a very basic interface. All you have to do is click Load to select an image, then choose a style and resolution, and click Process to transform the picture.
The program has a long list of styles to choose from, including Acrylic, Ascii, Ballpoint, Colored Pencil Lines, Composition, Cubist, Dot Drawing, Edtaonisl, Finger Painting, Jagged, John Constable, Kanagawa, Kandinsky, Mandelbrot, Moving Castle, Oil Painting, Outline, Pencil Drawing, "Sand from Gobi Desert", Seurat, Starry Night, Stone Art, The Scream and Watercolor.
The results don't always match up with the name - "Oil Painting" didn't produce anything paint-like at all - and the styles often did very similar things, but the program did occasionally deliver interesting artwork.
Please note, the free version adds a watermark to your image, limits the output to a maximum 1024x1024 resolution, and displays an occasional nag screen.
Style offers plenty of art styles, but the results can be very similar: an embossed or smoothed effect, added texture and a colour shift. Try it anyway if you're interested in this kind of tool, but stick to something like Fotosketcher for the best possible quality.