WeFi is a free application with over a million users. It lists 17 million WiFi hot-spots in a massive database and you can locate them easily and automatically connect anywhere Wi-Fi is available.
Find hotspots around the globe, chat with friends and see where they are on the WeFi map. You can also update Facebook and Twitter with your location or contribute towards the building of the database by adding new WiFi hotspots as you move around.
This sounds a little like Navizon but it’s certainly worth a try.
Update – Hmm – I think this is causing a bit of grief in the WinMo community – have a read of this if you’re having issues with your WiFi once you’ve un-installed it (thanks jeremyash).
Link – WeFi.com