You asked about Computational Storage
24 people built something like it. 4 are gone.
That is 20% of the ones whose fate we could settle, against 23% across the whole register. 4 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2018-06-01 | Database for AI · activeloop.ai | still up |
| 2021-01-01 | Mobile Energy Storage Technology · moxionpower.com | gone |
| 2021-06-01 | YCStownest Flexible On-Demand Storage Space for Household, SMEs & Travellers. · stownest.com | still up |
| 2014-01-01 | Enabling li-ion batteries to charge ultra fast without compromising… · gbatteries.com | still up |
| 2019-01-01 | We use solar and wind power to make zero net carbon electrofuels · prometheusfuels.com | still up |
| 2017-06-01 | YCAdvano Advano is a battery technology company that improve the longevity of… · advano.io | still up |
| 2017-06-01 | YCAirthium Decarbonized heat and power cheaper than fossil fuels · airthium.com | still up |
| 2018-01-01 | Computational antibody design · macromoltek.com | still up |
| 2021-06-01 | YCHeimdal Affordable and verified direct air carbon capture and storage · heimdalccu.com | gone |
| 2021-01-01 | Electricity price forecasts for energy storage, ev charging, etc. · inbalanceresearch.com | acquired |
| 2022-01-01 | YCPosh Rapidly deployable energy solutions for modern commercial and… · poshenergy.com | still up |
| 2025-01-01 | Computational Law · sammylabs.com | still up |
| 2019-06-01 | SaaS that helps renewables & energy storage operate more profitably · gaia-scope.com | acquired |
| 2024-01-01 | YCSpark AI-powered workflows for energy infrastructure · sparkhq.ai | still up |
| 2020-01-01 | YCOpenUnit Software for managing self-storage facilities. · openunit.com | still up |
| 2020-06-01 | YCOneKey Find the most profitable sites to build EV charging station · getonekey.io | gone |
| 2025-09-01 | YCAspect Intelligent media storage for creative teams. · aspect.inc | still up |
| 2024-01-01 | Batteries and solar for $0 upfront to help businesses save money · vistapower.com | still up |
| 2022-06-01 | YCPoly Intelligent Personal Cloud Storage · poly.app | still up |
| 2023-01-01 | YCAtmeto We develop ML that optimizes how batteries in the grid store energy · atmeto.com | still up |
| 2017-01-01 | YCTerark Fastest Storage Engine with the Best Compression, we enables direct… · terark.com | acquired |
| 2012-01-01 | YCLoom Cloud storage for photos and videos (acquired by Dropbox). · loom.com | acquired |
| 2022-01-01 | First commodity marketplace for hydrogen. · phoenixhydrogen.com | gone |
| 2025-09-01 | YCAxial Accelerated Physics Kernels for Computational Engineering · axialcompute.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.