You asked about Hard Tech
304 people built something like it. 48 are gone.
That is 17% of the ones whose fate we could settle, against 23% across the whole register. 26 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2021-01-01 | Software orchestrated mass production of plastics · atomic.industries | still up |
| 2021-01-01 | Physical AI for Warehouses and Factories · fluxauto.ai | still up |
| 2021-01-01 | YCAlbedo Full-stack VLEO satellite missions · albedo.com | still up |
| 2021-06-01 | YCLuminate We make cancer care at home possible. · luminatemed.com | still up |
| 2021-01-01 | YCRemora Carbon capture for vehicles · remoracarbon.com | still up |
| 2021-06-01 | YCVedaBio CRISPR powered Diagnostics with results in minutes. · vedabio.com | still up |
| 2021-06-01 | Turning space into a transportation layer for Earth · inversionspace.com | still up |
| 2021-06-01 | Automated e2e screenshot testing without writing or maintaining tests · meticulous.ai | still up |
| 2021-06-01 | Vertical takeoff and landing aircraft for major airlines · odysaviation.com | still up |
| 2021-01-01 | We make satellites to image everywhere on Earth, every 15 minutes · albaorbital.com | still up |
| 2021-01-01 | Desktop DNA Printer. The Nespresso Machine for DNA. · kilobaser.com | still up |
| 2021-06-01 | Portable cryoablation to prevent cervical cancer · ananya.health | still up |
| 2021-06-01 | YCPotion AI for product formulation · potion.ai | still up |
| 2021-06-01 | YCJupe Just add land · jupe.com | gone |
| 2021-06-01 | Programmable biology company for psychoactive effect design · mindstate.design | still up |
| 2021-06-01 | A platform to make artificial viruses as cancer therapeutics. · humanegenomics.com | still up |
| 2021-01-01 | Autonomous street sweeping as a service by retro-fitting vehicles · hermes-robotics.com | still up |
| 2021-01-01 | Building robots to automate commercial concrete construction. · rointech.com | acquired |
| 2021-01-01 | YCAuricle Neurostimulation implant to restore hearing & speech understanding · auricle.com | still up |
| 2021-01-01 | The highest-accuracy global weather data from low-cost flat satellites · careweather.com | still up |
| 2021-01-01 | YCGreywing The Operating System for Maritime · grey-wing.com | still up |
| 2021-06-01 | Technologies for scaling up cultured/clean meat production · micromeat.com | gone |
| 2021-01-01 | Redcliffe Labs is India's Largest Omni-channel Diagnostics platform · redcliffelabs.com | still up |
| 2021-06-01 | YCLemFi Fair, simple and accessible financial services · lemfi.com | still up |
| 2021-07-06 | sidequestjobs.com | unverified |
| 2021-01-01 | YCHoum All-in-one real estate marketplace for Latin America · houm.com | still up |
| 2021-01-01 | Mobile Energy Storage Technology · moxionpower.com | gone |
| 2021-07-20 | sioyek.info | still up |
| 2021-01-01 | YCDjamo Challenger Bank for consumers in French speaking Africa. · djamo.com | still up |
| 2021-11-15 | textframe.app | still up |
| 2021-03-05 | relocate.me | still up |
| 2021-06-01 | Global platform for employee engagement with rewards&flexible benefits · advantageclub.co | still up |
| 2021-02-03 | ytt-tech.com | unverified |
| 2021-06-01 | YCOnebrief Onebrief makes military headquarters run seamlessly · onebrief.com | still up |
| 2021-04-03 | bilbof.com | still up |
| 2021-06-01 | IP operating software for brands and content companies · marqvision.com | still up |
| 2021-01-01 | YCOntop Simplifying hiring and payments for the global workforce · getontop.com | still up |
| 2021-01-01 | YCclicOH Amazon-like logistics for e-commerce companies in Latam · clicoh.com | still up |
| 2021-06-01 | YCBaubap Smart micro financing for everyone · baubap.com | still up |
| 2021-01-01 | YCGigs The OS for Embedded Telecom · gigs.com | still up |
| 2021-06-01 | YCToku Account Receivables Platform for Latin American Enterprises · trytoku.com | still up |
| 2021-01-07 | leetresumes.com | unverified |
| 2021-06-01 | Corporate Card solution for Indian businesses · karboncard.com | still up |
| 2021-01-01 | We help US tech companies hire and manage software engineers in LATAM · howdy.com | still up |
| 2021-01-01 | YCGridware Protecting the grid today, preparing the grid for tomorrow · gridware.io | still up |
| 2021-01-01 | YCPibit.ai The fastest path from submission to better decisions. · pibit.ai | still up |
| 2021-01-01 | YCCamber Admin automation for healthcare · camber.health | still up |
| 2021-01-01 | YCR2 Embedded lending infrastructure · r2.co | acquired |
| 2021-06-01 | YCARQ The global financial platform for affluent consumers in the Americas. · arqfinance.com | still up |
| 2021-01-01 | YCCodingal Leading online after-school for kids & teens to learn AI & coding · codingal.com | still up |
| 2021-06-01 | Learning platform for job seekers with job applications automation · careerist.cc | still up |
| 2021-06-01 | YCChari B2B e-commerce and fintech platform for traditional proximity stores · chari.com | still up |
| 2021-01-01 | YCGroMo App for independent agents to sell financial products in India · gromo.in | still up |
| 2021-01-01 | YCDarrow Bring Justice to Light · darrow.ai | still up |
| 2021-01-01 | Aviron transforms workouts with game-based exercise machines, making… · avironactive.com | still up |
| 2021-01-01 | YCpeopleCQ Employer backed payroll advances for employees in Egypt · peoplecq.com | still up |
| 2021-01-01 | YCZ1 Digital bank for teenagers in LatAm connected to prepaid card · z1.app | still up |
| 2021-06-01 | YCDouble We make software for bookkeepers. · doublehq.com | still up |
| 2021-06-01 | YCStownest Flexible On-Demand Storage Space for Household, SMEs & Travellers. · stownest.com | still up |
| 2021-01-01 | The new wealth manager for Europe · finary.com | still up |
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.