Here are some Homebridge plugins that I have considered as possible candidates for the integrated version of Homebridge that is packaged with HBB. If there's one you would like to see that is not on the list then post a reply to the thread. Keep in mind that not all plugins are possible (i.e., camera requires the full Homebridge-Indigo implementation from Webdeck to function) but if they don't require a lot of additional libraries to run then it may be possible to integrate them.
You can research any of the proposed options at the NPM Homebridge Plugin List by browsing the list or searching for Homebridge-??? where ??? is the plugin name you are researching (i.e., Homebridge-ifttt).