Virtual Classroom

Commercial versus open source for a virtual classroom. I don't see the need in paying for a virtual classroom in today's market. Edmodo, Google classroom, Schoology and many more provide free virtual classroom. I also think that the virtual classroom or programs should be web based and not downloads for your computer. Downloading on a computer in a school system can be a big pain when you have to get permission or takes up server space. There are to many free options to be paying for most services.