Redgate is a database devops solutions provider for SQL Server, Oracle, PostgreSQL.

Devart provides database management software, data connectivity solutions, and developer productivity tools for SQL Server, MySQL, Oracle, and PostgreSQL.

SQLServerCentral is the #1 community and education site providing articles, forums, scripts, and news for SQL Server professionals and DBAs.

MSSQLTips is a database management company that provides SQL Server resources and solutions for DBAs, Developers, and BI Professionals.

Brent Ozar Unlimited provides expert Microsoft SQL Server consulting, performance tuning, and training to make databases faster and more reliable for frustrated DBAs.

SQL Shack provides articles and tutorials on database management, focusing on SQL Server, PostgreSQL, Oracle, and performance tuning for IT professionals.

SQLskills is a database management company that offers top-quality training and consulting services with real-world expertise in SQL Server.

ScaleGrid is a database hosting service for MySQL, PostgreSQL, Redis, MongoDB, and SQL Server.

Toad is the premier database developer tool suite for managing, developing, administering, and tuning Oracle, SQL Server, and DB2 environments.

Zencko appears to be a content or publishing platform focused on technology and business articles, with a strong emphasis on SQL Server Integration Services (SSIS) and ETL processes.

Dot Net Tutorials is a free educational platform offering comprehensive guides on .NET, Java, C#, SQL Server, and full-stack technologies for developers.

Database Star is a resource providing in-depth tutorials, guides, and tool comparisons for SQL users focusing on PostgreSQL, MySQL, and SQL Server skills.

Analyst Builder is an online learning platform for data analysts and is used by aspiring data analysts.

SQL Spreads is an Excel add-in for updating data in SQL Server used by data analysts and financial professionals.

jTDS JDBC Driver is the best JDBC driver for SQL Server and Sybase and is used by enterprise-level applications and developers.

SQL Authority is the best resource for SQL Server performance tuning and is used by database administrators and developers worldwide.