Firefoo is a sophisticated GUI tool for Firebase Cloud Firestore. View and edit your data in a table, tree or JSON, export to JSON and CSV, and run queries from a JavaScript shell.
I saved so many hours using firefoo. Firebase GUI is a pain and I am grateful to have found this solution.
Support is very supportive and answered within 1min when I had an issue. The support button is a bit hard to find (bottom left when you are in the desktop app), could be more prominent.
