OsmAnd - Global mobile map viewing and navigation for online and offline OSM maps
Mobile Trail Explorer - Mobile Trail Explorer is an application where user can view and record tracks using the mobile...
MAPS.ME - Fast, detailed and completely offline maps for mobile devices
Maplorer - Mobile Atlas Creator. Free software for Windows CE and Windows mobile based GPS systems and smartphones.
HERE WeGo - HERE WeGo - Maps - Routes - Directions - All ways from A to B in one
Navmii - Navmii was first launched in 2010 as Navfree, a free navigation app for iPhones. Since that release, more than 20 million iPhone and Android users have downloaded Navfree or Navmii. Read more about Navmii.