Many plugins offered by NativeScript's Technical Steering Committee (TSC) are listed in the sidebar/sub navigation to help with your developments. For example, everything from biometrics, camera handling, contacts management, Firebase integration, Google Maps, to payment management using Apple Pay, Google Pay, or IAP and Subscription handling and many more can be found here.
If you are interested in building your own plugins, we recommend following our Getting Started with Plugin Workspaces guide which uses our plugin workspace seed (the exact same setup the TSC uses to develop it's own plugins) as a starting point because it provides the following:
You may also find these resources helpful: