This list of simple extensions aims to guide new developers to simple MediaWiki extensions, for hacking or learning. Some of the code from these extensions can provide insight into how to approach an implementation task, or even be cannibalized for your purposes.
On those pages, please check the MediaWiki version of those extensions:
- BoilerPlate: A blank extension template. Doesn't do anything but provides "skeleton" example for an actual MediaWiki extension.
- Examples: contains examples of codes, highly commented, to read, understand, be copied, providing basis functions for your own extension. Complementary to BoilerPlate.