CommunityWalk
loc.alize.us - Explore your world through everyone's eyes
A smart way to browse and locate Flickr images on large map of the world. Filter photos by selecting a specific tag or searching for your buddy's user name. All navigation is done without any page refresh. An app that may save your boring afternoons.
Extension:Google Maps - MediaWiki
maps WiKI - SWiK
ÖROK-ATLAS Österreich - Atlas Infosystem Austria
Platial.com
Mindomo - Web-based mind mapping software
Mapillary