Hmm.. The most advanced one from the ones I follow today is definitely Intelligent Hero - have you heard of the guys already? In few words, with the help of the platform you can earn educatively - get motivated professionally, share skills and knowledge with millions of others just like you. What is unique here - industry is pretty large, even though there are mot many solutions that would offer ultimate opportunities. And Intelligent Hero looks very professional. I recommend you to have a closer look at their website, a lot of useful info available there