DBeaver - DBeaver - Universal Database Manager and SQL Client.
Dabble Writer - Writing software for novelists.
MySQL Workbench - MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.
FriendlyData - Communicate with databases like a human
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.
Endaga - Build your own cellular network. Just add power & internet.