Earlier this year, Google started offering a collection of plug-in filters under the name Nik Collection. Prior to this move, I was hesitant to spend the $499 for this software, which Google later lowered to $149, feeling that I could accomplish most of the looks it offered without spending the money. But Google’s offering is now free, so many photographers, myself included, downloaded and installed this software.
This software isn’t a stand-alone application, but a set of plug-ins that work with Adobe’s Photoshop and Lightroom, and Apple’s out-of-production Aperture.
I have only begun to play around with these filters, but so far, I’ve found them to be capable and fun, and I recommend you get them here (link) and try them. The only caveat is one I have stressed since the days of high dynamic range (HDR) overuse: these filters are just a tool in the toolbox, and can easily be used too often and too strongly. But with discretion and taste, they are a good tool.