DBeaver - DBeaver - Universal Database Manager and SQL Client.
MxToolBox - All of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool.
DataGrip - Tool for SQL and databases
pgAdmin - pgAdmin Website
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.
IBM Cloud Bare Metal Servers - IBM Cloud Bare Metal Servers is a single-tenant server management service that provides dedicated servers with maximum performance.