Software developer Jonas Wagner has just created a free online analog film editor based on Pat David's 2013 set of color lookup tables, which were also used as the basis for a film emulation plug-in for The GiMP. The site, http://29a.ch/film-emulator/ (NOTE: link has been corrected), is a Java app that runs on most browsers. It also runs on portable devices, such as iPhones and iPads. Note: access to the internet is required to use the app.
I've played around with a few of the emulations, and they're quite tasty. I'm especially impressed with the Ilford HP5+ emulation (called Hypersensitive 5 + 400 to avoid copyright or trademark issues), as well as some of the Polaroid stock emulations. You can also tweak the settings to your liking, using the sliders on the side of the screen (they're accessed by tapping the menu selector in the lower left of the screen on an iPhone).
There are a couple of caveats to the app. First, you must be connected to the internet to use it. Second, raw files are not supported (however 24-bit PNG files are supported, and they're pretty darned good).
Thanks to Jonas for providing a great, free resource, and saving me the cost of buying something like VSCO. I know I'm going to add it to my arsenal of cheap-or-free photo editing tools.