ERD Lab is an online ER Diagram Tool that allows you to visually design your database.
You can import existing SQL or create a new database without writing any code. Visualize your schemas and collaborate with your team. When you are done, export SQL or PDF/Image. All this for free
DataGrip - Tool for SQL and databases
Slip.so - With Slip you can monetize your programming knowledge. Build engaging and interactive programming courses for your audience
Skill Focus - Choose your focus in Skill Focus.
Coding List - Find the best programming courses
Airforms - Got a database?
CoursePlanet - CoursePlanet is an up-skilling platform for developers and designers.