You asked about Hard Tech
126 people built something like it. 0 are gone.
That is 0% of the ones whose fate we could settle, against 23% across the whole register.
| Launched | What it was | Today |
|---|---|---|
| 2025-01-01 | Software Enabled CNC Parts Supplier · forgeautomation.ca | still up |
| 2025-01-01 | Reusable Satellites · reditus.space | still up |
| 2025-06-01 | Tiny Edge AI For Tiny Devices · cactuscompute.com | still up |
| 2025-01-01 | AI performance monitoring for factory workers · optifye.ai | still up |
| 2025-09-01 | The Modular Interceptor Platform · wardstone.us | still up |
| 2025-01-01 | Fusion reactors for ships · maritimefusion.com | still up |
| 2025-01-01 | Building lunar landers · instinct-space.com | still up |
| 2025-06-01 | YCb12 Labs Making hard molecules for Pharma and Biotech · b12-labs.com | still up |
| 2025-09-01 | YCNorra Automating equipment operations for nursing facilities · norra.io | still up |
| 2025-09-01 | YCThesis Humanoid robots · thesislabs.ai | still up |
| 2025-09-01 | Robots with soul · lightberry.com | still up |
| 2025-09-01 | Powering tomorrow's industrial revolution in space · zephyrfusion.com | still up |
| 2025-06-01 | The Cursor for Chip Design - Delivering Silicon-Ready Chip Designs… · sigmanticai.com | still up |
| 2025-09-01 | YCIcarus Stratospheric birds for defense · icarus.one | still up |
| 2025-01-01 | YCSpott AI-native ATS/CRM for recruiting firms · spott.io | still up |
| 2025-01-01 | YCHarper AI-native commercial insurance brokerage · harperinsure.com | still up |
| 2025-01-01 | Agents for Accelerated Clinical Trial Design · delineate.pro | still up |
| 2025-06-01 | Secure frontier AI for government & adjacent knowledge work · vulcan.ai | still up |
| 2025-01-01 | YCPickle Where your life context becomes understanding. · pickle.com | still up |
| 2025-06-01 | YCSolva Automates insurance claims and stops incorrect payouts · solvatechnology.com | still up |
| 2025-01-01 | AI for insurance verification & billing at dental clinics · toothy.ai | still up |
| 2025-09-01 | YCLexi AI Operating System for Legal Teams · getlexi.io | still up |
| 2025-06-01 | YCFreya Voice AI for Enterprises · freyavoice.ai | still up |
| 2025-01-01 | YCMentra Building the open source smart glasses operating system. · mentra.glass | still up |
| 2025-09-01 | YCAmera Automating claims processing workflows for health insurance payers. · amerahealthsolutions.com | still up |
| 2025-06-01 | YCDuranium Reshoring critical metal production · duranium.co | still up |
| 2025-01-01 | YCCardamon AI compliance co-pilot for regulated financial businesses · cardamon.ai | still up |
| 2025-01-01 | YCClosure We help law enforcement solve crime · closure-intel.com | still up |
| 2025-06-01 | YCRuvo The Global Dollar App for Brazil · ruvo.com | still up |
| 2025-01-01 | YCYouShift The OS for hospital workforce management · you-shift.com | still up |
| 2025-09-01 | YCComplyDo Global Compliance for Enterprises · complydo.io | still up |
| 2025-09-01 | YCZalos Hire Zalos AI workers to run your finance department · zalos.ai | still up |
| 2025-06-01 | YCVeritus AI agents for the consumer lending industry · veritus.com | still up |
| 2025-06-01 | YCFinto AI accounting for enterprise finance teams · gofinto.com | still up |
| 2025-09-01 | YCMOVEdot AI Agents for Hardware Engineering · movedot.ai | still up |
| 2025-01-01 | YCBild AI AI estimating & detailing for Division 8 doors, frames & hardware · bild.ai | still up |
| 2025-01-01 | YCBlindPay Stablecoin API for global payments · blindpay.com | still up |
| 2025-01-01 | AI drug discovery platform for neurotherapeutics · exintherapeutics.com | still up |
| 2025-01-01 | Manufacturing the most powerful chips, 15x faster · inversionsemi.com | still up |
| 2025-09-01 | Superintelligent financial advisor · becomeautonomous.com | still up |
| 2025-09-01 | AI agents for your healthcare back-office operations. · goclicks.ai | still up |
| 2025-06-01 | Replacing the restaurant phone line with Voice AI · certus-ai.com | still up |
| 2025-01-01 | YCAsteroid The integration layer for healthcare: EHRs, payer portals & more · asteroid.ai | still up |
| 2025-09-01 | YCZavo AI Operating System for Restaurants · zavopay.com | still up |
| 2025-09-01 | YCTornyol We build micro-drones that kill mosquitoes. · tornyol.com | still up |
| 2025-09-01 | YCSava Building the future of trusts · savahq.com | still up |
| 2025-06-01 | YCLuminal Making AI run fast on any hardware. · luminal.com | still up |
| 2025-06-01 | YCEmbedder Hardware-Aware AI for Embedded Software Development · embedder.com | still up |
| 2025-06-01 | YCBlue Your phone finally has someone to run it. Plug in Blue, just ask. · heyblue.com | still up |
| 2025-09-01 | AI for detecting patent infringements · patentwatch.ai | still up |
| 2025-01-01 | More 𝛼, less latency: exchange and HFT on one chip. · pax.markets | still up |
| 2025-06-01 | Build AI agents for field technicians to diagnose and sell 10x better · noso.so | still up |
| 2025-01-01 | AI-driven exam prep · alice.tech | still up |
| 2025-06-01 | The GD&T Analysis Platform for Engineering Drawings · f4.dev | still up |
| 2025-01-01 | Next-Generation Power Electronics · steinmetzmotors.com | still up |
| 2025-01-01 | YCRally Financial OS for Modern Fleets · getrally.com | still up |
| 2025-09-01 | YCCasey Casey is an AI-native commercial insurance brokerage · caseyinsure.com | still up |
| 2025-06-01 | YCAstor AI advisor for retail investors · astor.app | still up |
| 2025-06-01 | YCTesora Frontier AI for Actuaries · tesora.ai | still up |
| 2025-01-01 | Pending CFTC regulation to be the first cash and physically settled… · liquidcompute.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.