Sugar Sell - Sugar Sell is a customer relationship management and sales automation software that can be used by salespeople, marketers, account executives, and support teams.
DBeaver - DBeaver - Universal Database Manager and SQL Client.
Goldmine CRM - Goldmine CRM is a Customer Relationship Management software that helps you build and manage your contact list, send follow-up emails, track your results and build better customer relationships using customer data and insights.
DataGrip - Tool for SQL and databases
Apptivo CRM - CRM for managing customer accounts
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.