You asked about 3D Printing

Nobody in the register described anything this way.

Matching
4
Gone
Median life
Acquired
4

Matching launches

checked 10 hours ago · 250 probed today
LaunchedWhat it wasToday
2013-06-01
Acquired by MakerBot in February 2014. A marketplace for 3D… · layerbylayer.com
acquired
2012-01-01
Turn physical objects and environments into 3D models in seconds. · matterport.com
acquired
2020-06-01
Combining 3D cell culture & AI to translate drugs to clinical success · knownmed.com
acquired
2015-06-01
Patient-derived 3D tissue reconstruction models for preclinical… · zpredicta.com
acquired

How this compares

How this was made. Show HN entries are every post from 2021 to 2023 with at least five points that linked to its own domain; code hosts and free hosting are excluded, because a repository outlives the effort behind it. Product Hunt entries needed 100 votes — a far higher bar, so they are the promoted top slice rather than a like-for-like sample. Both are judged by asking the domain whether it still answers: gone means it no longer resolves, refuses the connection, serves a parking page, or says plainly that it shut down. An HTTP error is not counted as gone — a server answering 404 is one somebody still pays for, and an audit of 25 gone-calls found two such sites alive with only a moved homepage. Y Combinator entries use the status YC publishes itself, which is why only those can say acquired. Squatted domains — a lapsed name now serving somebody else's site — are not detected, so these figures run slightly low.