Graphical administration tools are often requested by system administrators. PostgreSQL has a range of tool options. In this book, we'll cover pgAdmin4, and also OmniDB, which offers access to PostgreSQL and other databases.
Both of these tools are client applications that send and receive SQL to PostgreSQL, displaying the results for you. The admin client can access many databases servers, allowing you to manage a fleet of servers. Both tools work in standalone app mode and within web browsers.