GUI

DPG is by far the best UI framework for Python! The only downside is that the community is still very small, and there's no governance model for it yet. Hopefully the two creators will donate it to PSF or some other community to manage.

Glade is a free and open-source RAD (Rapid Application Development) tool for development of user interfaces with the GTK+ toolkit. By using GtkBuilder, Glade XML files can be used cross-platform in programming languages like C, C++, C#, Vala, Java, Perl, Python,and others.

Visualize SQL queries as you type and make fewer mistakes. With autocompletion that understands your database structure. Supports MySQL, PostgreSQL, and Microsoft SQL Server. Free for personal use.

best free and opensource

Free open source Electron based SQL client that also supports NoSQL databases.

Very good in most cases, will not search and install dependencies

I'm trying to get the "I recommend" widget to go away and so I randomly picked this option

one of the oldest customizing sites