You asked about Climate
27 people built something like it. 27 are gone.
That is 100% of the ones whose fate we could settle, against 23% across the whole register.
| Launched | What it was | Today |
|---|---|---|
| 2021-01-01 | Mobile Energy Storage Technology · moxionpower.com | gone |
| 2016-01-01 | To make food a renewable resource, for everyone · inevitabletech.com | gone |
| 2021-06-01 | Home electrification at $0 upfront cost · solarmente.es | gone |
| 2021-01-01 | The fastest and easiest way to make home upgrades · homebreeze.ai | gone |
| 2017-06-01 | Sunfolding builds next generation infrastructure for solar farms. By… · sunfolding.com | gone |
| 2023-04-21 | usebend.com | gone |
| 2021-06-01 | YCPerfekto Grocery subscription service against food waste in Latam · perfekto.mx | gone |
| 2018-01-01 | YCOvipost Automated insect farming · ovipost.com | gone |
| 2016-01-01 | Carbon neutral packaging for ambitious businesses. · georgettepackaging.com | gone |
| 2021-06-01 | YCHeimdal Affordable and verified direct air carbon capture and storage · heimdalccu.com | gone |
| 2021-01-01 | YCNoya Radically reducing capital costs and build time for direct air capture · noya.co | gone |
| 2021-06-01 | YCJupe Just add land · jupe.com | gone |
| 2019-01-01 | AI driven professional engineering firm · traverse.ai | gone |
| 2022-01-01 | YCPelm Plaid for utilities · pelm.com | gone |
| 2021-06-01 | Revolutionizing digital selling within HVAC · onsitepro.co | gone |
| 2019-01-01 | We deliver affordable renewable energy direct to customers and are… · getgex.com | gone |
| 2022-01-01 | YCAklimate Software for enterprises to track and reduce supply chain emissions · getaklimate.com | gone |
| 2023-06-01 | Incentives and financing for energy efficiency upgrades · line.build | gone |
| 2023-01-01 | Revolutionary, Modern Wing Sails · outsailtech.com | gone |
| 2022-01-01 | First commodity marketplace for hydrogen. · phoenixhydrogen.com | gone |
| 2023-01-01 | YCChoppy! FAST FLAVORFUL PROTEIN · eatchoppy.com | gone |
| 2017-06-01 | YCWATERFX The world's first 100% sustainable water provider (aka alternative… · wacomet.com | gone |
| 2015-06-01 | YCOhm Never jump start your car again. · getohm.com | gone |
| 2018-06-01 | dairy reinvented from plants · sperofoods.co | gone |
| 2021-06-01 | YCCanopi API to measure and eliminate carbon emissions · canopi.cash | gone |
| 2008-06-01 | YCCO2Stats Social and environmental web analytics. Acquired in December 2016. · co2stats.com | gone |
| 2021-06-01 | Technologies for scaling up cultured/clean meat production · micromeat.com | gone |
How this compares
Y Combinator reports its own outcomes, including acquisitions. The other two are judged by asking the domain, so they are not measured the same way and are never averaged together.
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.