You asked about Nanotechnology
11 people built something like it. 3 are gone.
That is 27% of the ones whose fate we could settle, against 23% across the whole register.
| Launched | What it was | Today |
|---|---|---|
| 2016-06-01 | Bringing 3rd generation, nanopore sequencing to healthcare to solve… · shieldbio.com | gone |
| 2014-06-01 | YCAlchemy Nanotechnology-enabled coatings for automotive and defence sectors · alchemynano.com | still up |
| 2020-01-01 | Nomic is doing for proteins what Illumina has done for DNA · nomic.bio | still up |
| 2017-01-01 | Next-generation mRNA platform to solve cancer, COVID and climate. · helixnano.com | still up |
| 2023-01-01 | YCInvitris Creating new protein-based drugs at scale · invitris.com | still up |
| 2023-01-01 | Developing long-lasting drug formulations 50% faster · persist-ai.com | still up |
| 2019-06-01 | Repellent coatings without PFAS · industry.spotlessmaterials.com | still up |
| 2017-01-01 | YCArylla We connect products to the internet using an invisible, chip-less tag · arylla.com | gone |
| 2019-06-01 | Using DNA to store data. · kernsystems.com | still up |
| 2022-06-01 | YCKeylika Redefining the Standard of Care for Iron Deficiency Anemia · keylika.com | still up |
| 2016-01-01 | YCSilver Low cost consumer device for toxin detection. · scansilver.com | gone |
How this compares
The register re-probes every domain it holds. Some that answered last month stop answering. We send that list — what went quiet, and what it was — once a month. Nothing else.
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.