DBeaver - DBeaver - Universal Database Manager and SQL Client.
Supermetrics - Supermetrics condenses all the major vectors of data relevant to a user's marketing campaigns and helps them make sense of it all.
DataGrip - Tool for SQL and databases
Airbyte - Replicate data in minutes with prebuilt & custom connectors
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.
Fivetran - Fivetran offers companies a data connector for extracting data from many different cloud and database sources.