Phun - 2D physics sandbox
Why the open web links it
Demonstrates a 2D physics sandbox where users can experiment with gravity, collisions, and fluid dynamics.
Linked by 28 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including inf.ua, over-blog.org, spreeblick.com, factornews.com, art-talk.ru.
Cited in 1 Wikipedia article, including Algodoo.