Here are a few that come to mind, while many others abound also.
- https://sortablejs.github.io/Sortable/
- https://shopify.github.io/draggable/
- https://haltu.github.io/muuri/
- https://bevacqua.github.io/dragula/
- https://anseki.github.io/plain-draggable/
- https://greensock.com/draggable/
- https://draggabilly.desandro.com/
Most of these are pretty vanilla yet very extensible further with user logic as desired. Some are similar while others have specific features which make them unique. I would say a few of these are quite relative to questions that have been asked regarding drag and drop from your tutorials. All of which would be a worthwhile review for consideration by users seeking drag and drop capabilities, some may prove useful to someone.
