I need you to develop Video conferencing and video calling proprietary software for my company . I would like video conferencing & video calling for my website and mobile app that does not require downloading, can be opened from any mobile and computer. The video conferencing will be for interviewing so must have classroom/ reviewing of documents and lessons for teaching. We will also need it for viewing concerts and gym classes live. The video calling on the mobile app will need just to push a button for both parties with no downloading required for any type of mobile device. I will want this to be done specifically for my company as a proprietary software. Must be able to show samples of this type of software that I can test.