You asked about Hardware
181 people built something like it. 31 are gone.
That is 18% of the ones whose fate we could settle, against 23% across the whole register. 13 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2017-06-01 | The first public safety operating system that eliminates crime. · flocksafety.com | still up |
| 2023-04-24 | rocket.jonh.net | still up |
| 2022-10-05 | hito.xyz | unverified |
| 2022-02-09 | creatorclub.com | gone |
| 2015-01-01 | YCMashgin Self-Checkout using Computer Vision. · mashgin.com | still up |
| 2019-06-01 | YCCoLab Human and AI design review for hardware · colabsoftware.com | still up |
| 2021-01-01 | YCGridware Protecting the grid today, preparing the grid for tomorrow · gridware.io | still up |
| 2015-06-01 | The sleep fitness company. · eightsleep.com | still up |
| 2023-06-27 | flux.ai | still up |
| 2022-01-01 | Robots for longer-lasting, better-tasting fish at scale. · shinkei.systems | still up |
| 2021-11-23 | unsafeperform.io | still up |
| 2020-01-01 | Robotic Automation for cancer diagnostics - Robotic Microscopes &… · morphlelabs.com | still up |
| 2016-01-01 | YCMason Mason is the fastest way to take smart devices from idea to end user · bymason.com | still up |
| 2016-01-01 | Home boxing gym with motion trackers that compute punches and reps. · joinfightcamp.com | still up |
| 2022-01-01 | Plug-and-play AI platform with sensors and dashboards that makes… · iotflows.com | still up |
| 2016-01-01 | YCPetcube Petcube is on the mission to improve lives of pets and pet owners… · petcube.com | still up |
| 2013-01-01 | YCNorth Wearable computing hardware: biosignal gesture recognition · bynorth.com | acquired |
| 2022-01-01 | Bluetooth to Space · hubble.com | still up |
| 2016-06-01 | YCXberts Xberts.com is a community-based marketplace for global hardware… · xberts.com | gone |
| 2019-01-01 | Unlocking the utility of genomics for the world. · voltalabs.com | still up |
| 2025-09-01 | YCIcarus Stratospheric birds for defense · icarus.one | still up |
| 2023-06-01 | hardwary.com | unverified |
| 2017-06-01 | YCZendar We make high definition radar allowing self-driving cars to see in… · zendar.io | still up |
| 2022-01-01 | Making all ships robots. · fleetzero.com | still up |
| 2017-01-01 | YCAON3D Additive Manufacturing with advanced materials · aon3d.com | still up |
| 2018-01-01 | Orangewood Labs makes worlds most affordable and easiest AI robot arms · orangewood.co | still up |
| 2019-01-01 | YCOverview Reshaping industrial quality with AI, hardware, and software · overview.ai | still up |
| 2020-06-01 | YCQuell Get fit fighting your way through a fantasy world. · playquell.com | acquired |
| 2019-01-01 | YCMobot Mobot is a QA-as-a-service platform using actual mechanical robots · mobot.io | still up |
| 2016-06-01 | YCSeerslab We are providing AR technologies and contents to app developers · argear.io | gone |
| 2019-01-01 | The Rocket Network: Sustainable & On-Demand Delivery Anywhere in Space · spaceryde.com | gone |
| 2019-06-01 | Green Canopy NODE builds sustainable homes fast. · greencanopynode.com | still up |
| 2021-06-01 | Turning space into a transportation layer for Earth · inversionspace.com | still up |
| 2018-06-01 | YCMytos Robotic human cell manufacturing · mytos.bio | still up |
| 2015-06-01 | AI-assisted electronics design · snapmagic.com | still up |
| 2020-06-01 | YCBlissway The tolling industry’s prime tech infrastructure · blissway.com | still up |
| 2022-01-01 | Multicolor lasers for ultrafast data transmission · enlightra.com | still up |
| 2017-01-01 | Decentralised broadband connectivity. · dabba.com | still up |
| 2025-01-01 | Software Enabled CNC Parts Supplier · forgeautomation.ca | still up |
| 2020-01-01 | YCRoboTire Robotire is automating vehicle maintenance for today and future… · robotire.com | gone |
| 2016-06-01 | YCProxy Smart ring digital wallet · proxy.com | acquired |
| 2017-06-01 | YCAirthium Decarbonized heat and power cheaper than fossil fuels · airthium.com | still up |
| 2017-06-01 | Social Construct designs and assembles large apartment buildings
… · socialconstructco.com | gone |
| 2017-06-01 | Your voice. Your health. We care. · cairns.ai | still up |
| 2015-06-01 | YCNebia Nebia is a breakthrough shower system, based on a premium experience,… · nebia.com | acquired |
| 2013-06-01 | YCSenic Simple Controls for Sonos, Philips Hue and other Smart Home products · senic.com | acquired |
| 2021-06-01 | YCFerveret Nuclear-inspired cooling that turns wasted power into more AI compute · ferveret.com | still up |
| 2018-01-01 | Next-gen blood testing to provide 1000x more data to pharma companies · correliabio.com | gone |
| 2025-01-01 | YCPickle Where your life context becomes understanding. · pickle.com | still up |
| 2022-01-01 | YCUNISON Live between worlds, in UNISON, using the headset we're building! · in-unison.com | still up |
| 2022-01-01 | YCCofactr Cloud pre-factory logistics and procurement for electronics · cofactr.com | still up |
| 2023-06-15 | hardwareteams.com | still up |
| 2022-01-01 | We go all out to Build the Smartest AI-Enabled Cameras! · avairsense.com | gone |
| 2021-01-01 | YCTilt Bringing the joy of cycling to millions of Indians · tilt.bike | still up |
| 2018-06-01 | We build artificial intelligence processors inspired by the brain. · rain-neuromorphics.com | acquired |
| 2025-01-01 | YCMentra Building the open source smart glasses operating system. · mentra.glass | still up |
| 2021-01-01 | YCAurabeat Providing clean, safe, virus free air for homes, buildings and cars · aurabeattech.com | still up |
| 2012-01-01 | Building Mission Critical Software Defined Radio products. · pervices.com | still up |
| 2011-01-01 | YCUpverter The future of hardware design. A marketplace for hardware engineering… · upverter.com | acquired |
| 2022-01-01 | YCAirMyne Building systems to remove carbon dioxide from air at industrial scale · airmyne.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.
Older launches have had longer to die, so this slope is expected. A year that broke it would mean something is wrong with the checking.
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.