[abetusk]

This is not open source.

From the site [0]:

"""

You must not:

* Republish material from nest2d

* Sell, rent or sub-license material from nest2d

* Reproduce, duplicate or copy material from nest2d

* Redistribute content from nest2d

"""

There is also no license described on their GitHub page [1].

At best this is "source available" and the service is free as in "gratis".

[0] https://nest2d.online/terms-and-conditions

[1] https://github.com/VovaStelmashchuk/nest2D

[DistractionRect]

The licensing around the project is unclear, but the ToS is plainly for the website.

[dimava]

Backend says its MIT in LICENSE

Frontend says it's PRIVATE in package.json