Skype
Skype is a stalwart of the video conferencing world. Despite new solutions coming out, it remains one of the most popular platforms for video calls. It has a robust feature set that gives you the ability to have multiple modes of communication. On top of that, it provides collaboration tools like image and document sharing.
Skype is also known for its ability to connect to landlines and mobile phones. The rates to take advantage of this functionality is low. Because of this, you can get people who are unable to join video calls onboard a conference without a hitch. You can also take advantage of Skype for free. It includes functionalities such as screen sharing, call recording, and live subtitles.