What tools exist for mobile phone programming?

Hello,
I would be very happy if somebody can help me (by sharing experience, web links, white papers, etc. ) to find the (latest)development techniques that exist for programming mobile phones.

(I am searching for topics other than WAP.) In brief, what programming languages, tools, etc. exist for progtamming mobile phones?

Even if you know 1 technique for progrmming mobile phones I would be very thankful for sharing a link to it or description.

Thanks.