WAP - http://www.google.com/imode or http://www.google.com/wml
Google’s mobile site can be used to do search the web, images, news etc.,
GMail - can be accessed at http://m.gmail.com or the GMail application can be downloaded from http://gmail.com/app
Google Maps - Can be downloaded from http://google.com/gmm
YouTube - If your phone supports streaming, you can access the youtube mobile site at http://m.youtube.com
Google Photos - http://picasaweb.google.com
Mobango
URL - http://www.mobango.com
WAP - http://wap.mobango.com
An excellent site offering free ringtones, themes, 3gp/wmv videos, wallpapers, software and games.A one time registration enables one to keep all content in a wap locker from which the contents can be downloaded to the phone anytime.
Zedge
URL - http://www.zedge.net
WAP - http://mobile.zedge.net or http://wap.zedge.net
Zedge offers content similar to Mobango although requires a one time registration.
GetJar
URL - http://www.getjar.com
WAP - http://wap.getjar.com
Offers software and games for all kinds of mobiles - symbian, java etc.,
Ovao
URL - http://www.ovao.com
WAP - http://wap.ovao.com
Download wallpapers and video from here.
Both GetJar and Ovao offers a facility called "Quick Download". The content ID from the website.
Lasyk
URL - http://www.lasyk.net
WAP - http://wap.lasyk.net
For sony ericsson phones - tones, themes, wallpapers etc., If you are using the wap site, the ID of the content you wish to download should be known. This can be obtained by browsing the website in a PC.
