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22 people built something like it. 4 are gone.
That is 19% of the ones whose fate we could settle, against 23% across the whole register. 1 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2021-06-01 | YCDatlo Datlo helps companies increase sales and expand through data · datlo.com | still up |
| 2021-06-01 | Project management on a live map · matidor.com | still up |
| 2021-01-01 | YCEstoca The Logistics Operating System for E-commerce in LatAm · estoca.com.br | still up |
| 2021-01-01 | YCgaiia all-in-one operating system (OS) for telcos · gaiia.com | still up |
| 2021-01-01 | Operating System for Hotels and Vacation Rentals · business.stayflexi.com | still up |
| 2021-01-01 | The all-in-one startup operating system · firstbase.io | still up |
| 2021-01-01 | YCPer Diem The AI operating system for restaurants · tryperdiem.com | still up |
| 2021-06-01 | Using the immune system to cure disease · parallel.bio | still up |
| 2021-06-01 | YCAtlas Operating system for restaurants, focusing on Southeast Asia · atlas.kitchen | still up |
| 2021-06-01 | YCJestor Saving OPS from SLOPS. Jestor builds internal systems that last. · jestor.com | still up |
| 2021-06-01 | YCInfer Operating system for insurance agencies · infer.so | still up |
| 2021-06-01 | YCEpinoma We engineer proteins that control the operating system of biology. · epinoma.com | still up |
| 2021-06-01 | YCAlgofi Building the new financial system · algofi.org | gone |
| 2021-06-01 | YCCumbuca Bare-metal access to Brazil's Open Finance and Pix systems · cumbuca.com | still up |
| 2021-06-01 | Increasing restaurant profitability through our AI Operating System · bytekitchen.io | acquired |
| 2021-06-01 | Regulating the immune system to block cancer & autoimmune diseases · sfatherapeutics.com | still up |
| 2021-01-01 | YCPlatypus The Distributed Data Operating System · getplatypus.com | gone |
| 2021-06-01 | YCStrideQ Automated phone ordering system for restaurants · strideq.com | still up |
| 2021-06-01 | YCMiniloop AI workflow engine for reliable systems · miniloop.ai | still up |
| 2021-01-01 | YCLunatic Operating System for server-side apps · lunatic.solutions | gone |
| 2021-01-01 | Building the operating system for diagnosis. · bewelldigital.com | gone |
| 2021-01-01 | YCGreywing The Operating System for Maritime · grey-wing.com | still up |
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.