There are several synchronous session delivery tools available on the market.
Adobe Connect, Cisco WebEx and GoToMeeting are the ones that not only work with the computer but also have mobile apps so students can access the session on the go.
I am personally using Adobe Connect while teaching at Georgia Virtual School. In the past I have used Blackboard Collaborate when I taught at Georgia Cyber Academy, conducted meetings using GoToMeeting as well as Cisco WebEx as well as tutoring using a different tool WizIQ (which also contains some CMS features)
Which one do I like the best? I really couldn’t tell you. They all have different components that I like. They all rely on internet connection so the complaints that I might have would mainly be attribute to internet connection issues which might not always be the fault of the application.
The mobility of Adobe Connect, Cisco WebEx and GoToMeeting makes them a cut above the rest as well as Adobe Connect’s features which enable you to edit the recordings.