>a while ago, there were discussion about frameworks, and their comparison. I have a misty idea about that, but can somebody make it clear for me?

If your question is what is a framework then it is a tool to do RAD development, have standards, something you can build on from project to project, normalisation, etc.

If your question is what frameworks are available then here's a few: Visual FoxExpress, CodeBook, AppMaker, ProMatrix, Visual FoxExtend, etc.