Here are a few WordPress plugins I've made. If you run across any bugs let me know. (Click the title to download as a zip file.)

Custom HTML
Exactly what it sounds like, a plugin that allows you to insert custom HTML code into any page or post using a shortcode. Originally made for a large WordPress Network site so site owners can add HTML without needing to mess with permissions.

Insert YouVersion
The YouVersion plugin currently in the WordPress plugin directory doesn't work any more, so I made a new one. Pick the version, book, chapter, chapter and verse and click insert. A shortcode is added that creates a link to the verse(s) on YouVersion.