Hi all. I recently put together this overview of embeddable HTML/JS photo viewers that support content in 360 format. It’s not super comprehensive but it has live demos of each, so you can try them live. There are free and paid options, I tried to find most popular. If you think some cool (especially if it’s free) viewer is missing, let me know and I’ll possibly add it later.
Here is the link: https://360photo-to-video.com/360-photo-viewers-comparison.html