Franchise – An Open-Source SQL Notebook
Co-creator here! We wanted  * A simple, flexible SQL client
  * A notebook interface that lets you drag stuff around and view things side-by-side
  * Query CSVs, JSON, and XLSX documents fully in-browser with Emscripten + SQLite
  * Postgres, MySQL and BigQuery through a local connection bridge. Your data never touches a third party server.

I’ll be here with @antimatter15 for the rest of the morning answering questions!