You asked about Big Data
483 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 |
|---|---|---|
| 2016-01-01 | AI + Robotics for the Built World · geckorobotics.com | still up |
| 2020-06-01 | YCSupabase Build in a weekend. Scale to millions. · supabase.com | still up |
| 2025-01-01 | Applied research lab curating data solutions for foundation model… · afterquery.com | still up |
| 2022-06-01 | Turning the web into a structured database of real world events. · newscatcherapi.com | still up |
| 2024-09-01 | YCArchil The high-performance file system that connects AI to data · archil.com | still up |
| 2023-06-01 | AI that audits AI — catching hallucinations before you ship them. · energent.ai | still up |
| 2021-06-01 | YCEndla Software that increases the value of oil & gas wells · endla.com | still up |
| 2025-09-01 | YCSciloop Expert STEM reasoning data for frontier AI labs. · sciloop.dev | still up |
| 2024-06-01 | YCVoker The Agent Analytics Platform · voker.ai | still up |
| 2024-01-01 | Deploy trustworthy data agent that know your business · upsolve.ai | still up |
| 2021-10-22 | influence.danielbeeke.nl | still up |
| 2025-09-01 | YCParse Build an API to interact with any website. · parse.bot | still up |
| 2025-06-01 | YCLiva AI Audio & Video Data · theliva.ai | still up |
| 2024-06-01 | YCSharpe Agents for quantitative research and financial data science. · sharpe.sh | still up |
| 2026-06-01 | YCLyon Foundation models on enterprise transaction data. · lyon.so | still up |
| 2026-06-01 | YCCoArena The biggest crowdsourced benchmark for Computer-Use · coarena.ai | still up |
| 2024-09-01 | Build full-stack applications for business operations with AI · vortexify.ai | still up |
| 2026-06-01 | YCAtlia The AI-native property management company for short-term rentals · atlia.com | still up |
| 2026-06-01 | YCMaingen Simulating Agents Running Industrial Companies · maingen.ai | still up |
| 2025-06-01 | YCPleom Agentic Business Intelligence · pleom.com | still up |
| 2013-01-01 | YCFivetran The leader in automated data movement · fivetran.com | still up |
| 2022-12-02 | sqlfordevs.com | still up |
| 2022-06-01 | typedream.com | still up |
| 2022-01-01 | Data driven neobank for SMBs in LATAM · kapital.mx | still up |
| 2016-06-01 | YCScale AI Data-centric infrastructure to accelerate the development of AI · scale.com | still up |
| 2009-06-01 | YCMixpanel Mixpanel is event analytics for builders that need answers. · mixpanel.com | still up |
| 2019-06-01 | YCTRM Labs TRM is building a safer world for billions of people. · trmlabs.com | still up |
| 2022-02-11 | boltic.io | still up |
| 2022-02-16 | anania.ai | still up |
| 2022-01-10 | databar.ai | still up |
| 2022-11-29 | baserow.io | still up |
| 2023-07-23 | cc.dev | still up |
| 2022-04-05 | datagridxl.com | still up |
| 2022-05-19 | apitracker.io | still up |
| 2023-01-05 | clickhouse.com | still up |
| 2022-03-17 | livedocs.com | still up |
| 2022-07-14 | revenuewatcher.com | still up |
| 2022-01-13 | heybooster.ai | still up |
| 2023-10-06 | dotbigbang.com | still up |
| 2022-10-25 | visme.co | still up |
| 2021-05-05 | csweapons.com | still up |
| 2021-04-20 | manuzoid.com | still up |
| 2022-03-15 | upstash.com | still up |
| 2022-01-26 | tomcritchlow.com | still up |
| 2022-10-13 | polytomic.com | still up |
| 2023-08-08 | airbyte.com | still up |
| 2022-10-12 | rye.com | still up |
| 2022-02-16 | rutter.com | still up |
| 2013-01-01 | The platform for building and operating time series applications. · influxdata.com | still up |
| 2014-06-01 | Rebuilding data in advertising to protect privacy · permutive.com | still up |
| 2022-10-23 | outstatic.com | still up |
| 2023-09-13 | docs.lantern.dev | still up |
| 2022-03-02 | dreamdata.io | still up |
| 2022-02-23 | raekdata.com | still up |
| 2023-12-03 | onsites.fyi | still up |
| 2022-06-23 | marketingminer.com | still up |
| 2022-02-19 | notion2charts.com | still up |
| 2022-02-02 | climatiq.io | still up |
| 2022-01-23 | bignews.app | still up |
| 2019-06-01 | YCProlific Making diverse, high-quality data easily available to anyone, anywhere · prolific.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.