For large groups and we mean large, Free Conference comes handy. Here you can have just 5 video participants but about 1000 audio participants via telephone (a good choice for someone looking to host workshops, classes etc) for an unlimited duration. There's a catch though, although it says "free", this is a premium service. But with the above mentioned decent free options, it's worth trying. There's no option to record a call unless you're using the premium version. Free users can however download the app on their phones aside from using the browser.
Free Conference
