You can learn a lot about how b2evo plugins work by installing the Test plugin and looking at it’s source. This can be very helpful if you want to create your own Plugin.

This Renderer plugin allows several formatting options for your text and also provides a toolbar to quickly insert BB Code into your posts and comments. This is especially useful on collections where HTML is not allowed.

This plugin provides a widget that displays a navigable calendar.

For more information on the widget provided by this plugin, please see: Calendar Widget

This plugin allows you to add CAPTCHAs to your site in the form of simple questions requiring simple text answers.

For example the site would ask "What animal is Bugs Bunny?" and the user would need to type in "rabbit" or "a rabbit".

The Generic ping plugin can be used to add a generic RPC ping service to your blog.