RokSocialButtons is a basic content plugin to display social links such as Facebook, Google+ and Twitter, with options for manual or category level addition.
RokNavMenu Exporter allows you to bring your existing styled Joomla menu over to phpBB for a more seamless experience. It is a great way to keep your visitors engaged with your site in its entirety.
RokInjectModule is bundle installed with RokSprocket, but also standalone here. It allows for modules to be injected into content via the [module-#] command.
RokModule is a support extension to add ajax functionality to certain modules. Its used in older versions of RokStock, RokWeather and RokNewsPager.