Essential for any .NET developer working with LINQ technology for data extraction and query generation against SQL Server databases in my case. It is a query simulator that is very easy and simple to use; you just need to configure the connection or connections to the databases you need and choose the language in which the statements are written. Once that's done, you just need to write or paste the query if you already have it created and want to test it, and execute to see the results. The results can be easily exported. It should also be noted that the free version is somewhat limited. I say this because the paid version includes a query generator with LINQ code from SQL queries, which means that it is not necessary to have an in-depth knowledge of this technology to work with it as long as you have this tool at hand and can pay for the license. Version by version, new features are added that make it even more attractive. I could add more things, but basically, it serves the purposes already mentioned.

Incredible tool for converting SQL Server queries to LINQ. The free version does not include this feature. It also allows executing queries on a database through direct connection to it, and is capable of detecting available servers to facilitate the connection. It is very simple and intuitive and makes generating LINQ queries easy and almost without needing to know it.

Simple application to execute code of .Net developement in LINQPAD