|The galleria window|
Using it is simple. Just browse to the folder containing your wallpapers and it displays thumbnails of each wallpaper in the iconview. Select the wallpaper you want and set your wallpaper with the "Set As Wallpaper" button. Can't get much easier than that.
If you select multiple wallpapers, then a wallpaper slideshow is created. It defaults to a one hour wallpaper change interval.
This is still very much a work in progress (I haven't even made an icon for this!). If you have a fairly large collection in the folder, it'll take some time to generate the thumbnails so the app may appear to not respond while it's doing that. Rest assured it's running fine.
There're alternatives available as posted in comments to previous posts on this topic, of course. This is just something a hobby project of mine, if you will.
Comments and ideas welcome.