BigBlueButton
5.0 tawm ntawm 5 hnub qub (raws li 1 kev tshuaj xyuas)
BigBlueButton yog qhov qhib qhov web conferencing system tsim los rau kev kawm online. BigBlueButton yog ib qho cuab yeej siv los ntawm cov kws qhia, uas pab lawv nkag mus rau Kev Tswj Xyuas Kev Kawm, cov cuab yeej kev koom tes thiab kev txheeb xyuas.
You can install BigBlueButton on your own server since it is open-source. There are definitely no ads, but they implemented this “Learning Analytics Dashboard” that is about analyzing the activity from the participants. That tool is used in schools and not for profit purposes I guess. Either way it is a trade-free video conferencing software.