open source

Well I have been checking out all the free programs avalaible.  It is amazing to me how these programs are offered completely free.  I am still waitning for the CATCH?? I like to find you tube videos to show and I found teacher tube that is very similar.  However, it is produced by educators so you can feel more comfortable knowing that you are going to get better quality information and not something stupid that is not relevant to education.  I also found a few things relevant to physical education.  It is really neat becuase you can track various things with your fitness levels and make your own plans.  I will be checking into this more.