https://www.mindfulleader.org/meditate-together This site offers no cost real time Zoom meditations 24 hours a day on the hour Monday through Friday. The group gathering is 15 minutes of silent meditation followed by 15 minutes of sharing with the group based on a daily theme. The “room” is hosted by rotating trained volunteer facilitators.
https://www.jeanvitrano.com/drop-in-meditations Jean Vitrano offers three donation based real time guided Zoom meetings three times a week. Tuesdays and Fridays from 10-10:30 am (guided) and Sundays, 7:30-8:45 (combination of guided and silent meditation followed by a short dharma talk and sharing.)
https://www.dharmapunxnyc.com/ Josh Korda offers donation based live zoom Dharma talks every Tuesday night at 7 pm. The talks blend a psychological and spiritual perspective. There is a talk followed by a meditation and then time for questions and sharing.