Pgface is a project mainly written in ..., it's free.
PostgreSQL ncurses UI for database administration
Hotkeys:
Menu: Open - 'F1' or 'ESC' Close - 'F1' or 'ESC' Navigation - arrows
List of databases/namespaces/tables: Navigation - arrows Choice - 'Enter'
Table data: Navigation - arrows Edit record - 'e' Append record - 'a' or 'i' Delete record - 'd' Close - 'x'
Record editing: Next column - 'Tab' or 'Ctrl+N' Previous column - 'Ctrl+P' Confirmation - 'Enter'