Yet another database editor, but optimized for postgres specific features
(and it's free & open source)

Powerful features while keeping it simple and minimalistic.
Save multiple database connections and easily switch between databases.
Quickly navigate through your tables, views and schemas.
Built-in SQL editor syntax highlighting, and auto-complete.
Save and import your SQL queries directly on your local filesystem.
Edit your json and jsonb data with a powerful VSCode-like editor.
Interactive foreign key selection with table visualization.
Perform action with fast shortcuts and use command palette for quick actions.
Filter your data with a visual editor or by writing where statments.
Export your table or data selection in JSON, CSV and SQL.
It's still a very early stage project, so the best way to help is to give it a try and report some bugs or suggest features through issues.
You can also give it a star on Github if you feel like it :)