Mobile London Street Map - This is a searchable street map of London. Image data is from streetmap.co.uk. Street index is from openstreetmap.org. In contrast to almost every other mapping midlet, the map data on your phone rather than retrieving it at huge cost via GPRS.
UPDATE: 0.3 brings better accuracy with the street locations, supports two streets with the same name, and lets you reselect the location of the map file. You can also now go to Charring Cross by pressing #. Oh and it's slightly faster.
META friend locator META friend locator is an online mobile map application with social features
Wisepilot GPS navigation system for mobile phones with clear voice guidance. With Wisepilot you get access to the latest maps and information available, it also now includes safety camera warnings in seventeen European countries
GpsMid Netherlands GpsMid is a free, fully offline, vector based map application for your mobile phone
amAze (LG) AmAze is a first of its kind free navigation and local search service. It is free to download and use and it contains wide coverage of maps including aerial photo in Europe, North America, Australia and parts of Asia and Africa
GpsMid Italy North GpsMid is a free, fully offline, vector based map application for your mobile phone
MunichTransport Map of Munich public transportation network, both sw and data under GPL License. Source code and other maps provided