SeekBeak is another easy to use cloud-based 360 image editor (with video editing in beta) that allows the addition of interactive content. The tags aren't quite as fancy as ThingLink's, but Seek Beak tags can include text, which makes it very clear to the user what would be triggered by each tag. Tags can trigger embedded video, text, links to other web sites, documents, spatial audio recordings, and transitions into other 360 scenes.
Selling points for SeekBeak include mobile/VR readiness and robust reporting and metrics, including A/B testing of hotspots and CSV file export of clicks, interaction time, user location, social media shares, browser and device data. Tags include a phone icon that will initiate a phone call or Facetime or Skype session to the number of your choice. Pricing ranges from free to $50 per month to custom pricing for heavy users who need more than 10GB of storage.