Styles & Plugins
Linkinus is still young, so it already comes with most add-ons that are available for it. There will eventually be a list of user-created styles and plugins here, but for now check the forums to see what people have come up with, or download the SDKs below and make your own!
Linkinus Style SDK
You can use the Linkinus Style SDK to create or modify styles for Linkinus.
Styles are a combination of HTML, CSS and JavaScript that is rendered by WebKit. A Linkinus style is simply a bundle, so if you would like to edit the files with your favorite editor instead of the SDK above just control-click or right-click a style and choose "Show Package Contents."
Linkinus Plugin SDK
With the Linkinus Plugin SDK you have the power to extend the functionality of Linkinus! You can create preference panes, capture incoming or outgoing IRC data from the Linkinus Agent and modify it, and more!
If you have questions about developing plugins you can talk with other plugin developers in the forums or check out the documentation that comes with the SDK.