Popular productivity tools for our webinar hosts at https://www.acsom.edu.dm/ include Zoom, Google Slides, Trello, Calendly, and Slack always work for us.
Zoom for hosting like others have said. Another thing is post-webinar marketing - record your webinars, and promote the content relentlessly on social media. Get extra eyeball and engagement and help you build an active social media profile in a relatively effortless way.
Check out Vizard - one of our core use case is webinar repurposing. Would love to hear what you think!
We are also launching next week - would love your support!