I usually use SQL Developer for tuning and analyzing databases, to visualise results, create simple reports and to simplify work by using simple scripts. 

I am using Oracle SQL Developer for formulas to find results in the databases.

We use it daily to merge our databases. In my function, I use it as my client database.

I am also using a newer version. It is small client, which is new product. We use the GUI product daily. This is my daily tool for whatever I am doing. 

Right now I am using SQL Developer to install a database, and I use it as a client tool.

I use the product, and the many aspects of it, because it covers everything from querying a database to monitoring to making a conceptual model to getting the model from the database and producing diagrams. It has many uses.

The primary use case is developing and maintaining databases.

Database querying, curating scripts, and database tuning.

We use it for test queries, before implementing scripts for monitoring. Also, we use it for querying and getting data of the whole environment monitored with our products.

It's for monitoring the database and for PL/SQL Developer.

We manage user databases and we see execution plans for performance. It's performing very well.

We use it to support developers. Its main use is for developers to connect to a database.