tagAR is an augmented reality tagging application developed for the Android operating system It allows you to tag locations in real time, and see tags posted by other users. It app encourages social networking between users from all walks of life, who can tag their favorite locations and post comments about the location. Anyone near that tag can see it on their mobile device.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.