Recently tried the GUI tool for ducks, forgot what's it called, something like 'Tab' and was quite disappointed. I feel duckdb needs a good tool like sqliteviewer to really take off.
I think you're referring to Tad (https://www.tadviewer.com), which I developed. Tad isn't "the GUI tool for DuckDb"; it's a desktop app that provides a pivot table based viewer for tabular data files (CSV, Parquet, and DuckDb/SQLite database files). It uses DuckDb as its engine, but pre-dates DuckDb and was developed independently. It's listed in the DuckDb docs along with several others tools that work with or use DuckDb. All that said, I'm sorry you found it disappointing, and would welcome any constructive feedback on what specifically you found lacking, either here or to tad-feedback@tadviewer.com.
Then I think I used it wrong, happens often. Thank you for your work. I was/am new to duckdb and since it was listed in the docs I assumed it was something like SQL viewer