Add backpex (#4880)

README.md

@@ -737,6 +737,7 @@ There are [other sites with curated lists of elixir packages](#other-awesome-lis
 * [access pass](https://github.com/AppDoctorIo/accesspass) - Authentication framework that can be used with or outside of phoenix. Similar to Addict but geared towards API usage.([Docs](https://hexdocs.pm/access_pass/api-reference.html#content)).
 * [addict](https://github.com/trenpixster/addict) - User authentication for Phoenix Framework.
 * [airbrake_plug](https://github.com/romul/airbrake_plug) - Report errors in your Plug stack or whatever to Airbrake.
+* [Backpex](https://github.com/naymspace/backpex) - Highly customizable administration panel for Phoenix LiveView applications. ([Docs](https://hexdocs.pm/backpex/), [Demo](https://backpex.live/)).
 * [better_params](https://github.com/sheharyarn/better_params) - Elixir Plug for cleaner request params in web apps.
 * [blaguth](https://github.com/lexmag/blaguth) - Basic Access Authentication in Plug applications.
 * [commanded](https://github.com/slashdotdash/commanded) - Command handling middleware for Command Query Responsibility Segregation (CQRS) applications.