I'd like to know about as popular as possible software for drawing ERDs, like MS Visio. It has to use Crow's Foot notation, and it doesn't have to be the most popular program, just very popular (because I want to be able to find much information about it online). Also, it would help if it's the most popular free software for drawing ERDs, I will also take into account other free options like Paint and MSSQL (because I'll be using MSSQL for the database).

I'm doing a coursework on this and I'd be thankful for any help, especially if the reply is quick, because I'm getting close to the deadlines.

Perhaps this thread is worth stickying?

Software to create ERD

I saw that thread before I posted this, but it didn't say anything about the popularity. However, I found my answer from the Sticky: Database Design Resources. I picked ER Studio.