It is free and open-source GUI client and available for Ubuntu including Windows and Mac OS X.
PgAdmin is one of the most popular and feature-rich database administration and development platform especially developed for PostgreSQL. So in this article I’m going to give you 5 best GUI clients for PostgreSQL which you can download and install on Ubuntu and other Linux distributions. Easy to use user interface, shortcut keys, easy access to files and databases are one of the key features that make GUI clients popular over command-line methods.
Even though I feel working in command-line is best way to learn anything in the world of application and software development, there are some limitations while working with databases in command-line.