I did a search and didn't find anything for Maprika. Last week I learned about an app called Maprika. I've never used it, so bear with me... It has an Android, iOs, and desktop version, and I believe they're all free. With it on your desktop, you can take any map, open it in the left pane, then open a geo-referenced map in the right pane of the same area. Using the geo-referenced map, you can geo-reference the map in the left pane. The map in the left pane can be (or maybe is supposed to be) an image. Using it, you can geo-reference historical and even hand-drawn maps of the area you're interested in. I can see tons of uses for this. I watched a lengthy video on youtube about a person who liked to treasure hunt, and geo-referenced a bunch of civil war camps (apparently both armies drew fairly accurate camp maps). With that, he's been able to go to those camps, and using his metal detector, look for buried relics. I have found that both WSU and UW have tons of maps imaged and they are free to access. Here's an example: http://content.libraries.wsu.edu/cdm/singleitem/collection/maps/id/956/rec/1 As for ADV, maybe you've got a paper map of an area, maybe you have an old hand drawn map (like the only official USFS trail map of Evans Creek in WA), maybe you want to draw a map for your buddies to find your camp or route, etc. Using Maprika, as I understand it, you can georeference those maps. http://www.maprika.com note: I am in no way affiliated with Maprika, and again I've not used it yet. I'd love to hear other people's experiences with Maprika.