DBeaver - DBeaver - Universal Database Manager and SQL Client.
PuTTY - Popular free terminal application. Mostly used as an SSH client.
DataGrip - Tool for SQL and databases
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.
iTerm2 - A terminal emulator for macOS that does amazing things.