You can't fault posts like this, listing some of the top recent Python applications written for S60-powered phones. Whether you're after some very useful example code for your own Python masterpiece or just some ideas for cool freebies to install and use, from a GPS tracker to game controller to equation solver, this is a good starting point, as will be the hosting Croozeus PyS60 Applications section, as it accumulates the results of similar choices and postings. In each case, there's full source code.
Read on in the full article.