Open source cartridges are a great way for people to learn how to create their own Wherigo experiences. However, the site still lacks the ability to filter the cartridge list by this attribute. Therefore, I am creating an exhaustive list of all open source cartridges to date (as of November 15, 2012). If you come across a recent cartridge that is open source, or one that has become open source, please post a link to it in this topic. Be sure to thank those who have offered their cartridges a