If you are searching for free tools and software (legal freeware or demo software), a nice website worth looking at is here;
A great collection of useful software. I just downloaded the virtualPhotographer photoshop plugin;
VirtualPhotographer is a Photoshop compatible plug-in that allows you to create a variety of photographic styles with the greatest of ease. VirtualPhotographer features many presets, all of which can be fine tuned to fit your requirements. Effects such as Film Grain, Soft Focus, B/W, B/W tinting, High Contrast etc. are all just a click away. No more struggling to get to grips with the steep learning curve of your photo editor.