You asked about Data Labeling
45 people built something like it. 11 are gone.
That is 28% of the ones whose fate we could settle, against 23% across the whole register. 5 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2021-06-01 | YCLightly Help ML teams label the right data · lightly.ai | still up |
| 2021-01-01 | YCEncord The data layer for physical AI · encord.com | still up |
| 2021-06-01 | YCAnakin One API to get clean data from any website for your AI agents at scale · anakin.io | still up |
| 2021-06-01 | YCDatlo Datlo helps companies increase sales and expand through data · datlo.com | still up |
| 2021-01-01 | YCSigNoz Open source alternative to DataDog · signoz.io | still up |
| 2021-06-01 | YCPluggy Plaid for Brazil: we allow developers to access users' financial data · pluggy.ai | still up |
| 2021-01-01 | YCauthzed Authorization Infrastructure securing AI at OpenAI, Zoom, & more · authzed.com | still up |
| 2021-06-01 | YCKodex Easiest way for companies to process data requests from governments · kodexglobal.com | still up |
| 2021-06-01 | YCAleph One source of truth for financial data. · getaleph.com | still up |
| 2021-06-01 | YCSecoda Secoda is the AI layer for your Analytics · secoda.co | still up |
| 2021-01-01 | YCSpruceID SpruceID lets users control their data across the web. · spruceid.com | still up |
| 2021-01-01 | API for developers and AIs to access health data · tryterra.co | still up |
| 2021-06-01 | AI Agents for Data Operations · oneschema.co | still up |
| 2021-06-01 | YCEnso Self-Service Data Prep and Blend Built for Data Teams. · ensoanalytics.com | still up |
| 2021-01-01 | Embed NL-to-SQL into your Product 📈 · dataherald.com | gone |
| 2021-06-01 | YCScispot The Best Data Infrastructure for Biotechs · scispot.io | still up |
| 2021-01-01 | YCVoosh Making Restaurants more data-driven! · voosh.ai | still up |
| 2021-06-01 | YCTelmai Automated data observability and quality for Data Lake · telm.ai | still up |
| 2021-06-01 | YCTarsal Data pipeline for your security data lake. · tarsal.co | acquired |
| 2021-01-01 | YCDayra Data-driven embedded Financial Services for Gig Workers · dayra.co | still up |
| 2021-01-01 | YCPrequel Helping B2B co's sync data to their customers · prequel.co | still up |
| 2021-06-01 | YCPipekit Pipekit scales data & CI pipelines for enterprises · pipekit.io | still up |
| 2021-01-01 | Using infection data to keep organizations safe · coverified.us | gone |
| 2021-01-01 | Build better computer vision models by building better datasets · segments.ai | acquired |
| 2021-06-01 | YCEndla Software that increases the value of oil & gas wells · endla.com | still up |
| 2021-06-01 | Manage your website from your favorite tools like Airtable and Notion · whalesync.com | still up |
| 2021-01-01 | Analyzing EHR and messaging data to predict disease before it occurs. · quadrant.health | still up |
| 2021-01-01 | YCAvenue Observability platform for operations teams · avenue.app | acquired |
| 2021-06-01 | YCEvidence Business intelligence as code · evidence.dev | still up |
| 2021-01-01 | YCJune June is the new way to do product analytics · june.so | gone |
| 2021-06-01 | YCGetDot Your AI Data Analyst · getdot.ai | still up |
| 2021-06-01 | YCSatsuma Reliable blockchain indexing & querying for web3 engineering teams. · satsuma.xyz | acquired |
| 2021-01-01 | YCeqtble Turning HR data into actionable insights · eqtble.com | acquired |
| 2021-01-01 | Synthetic data for better vision. · sbxrobotics.com | gone |
| 2021-06-01 | YCShape Get data insights without writing SQL · shape.xyz | still up |
| 2021-06-01 | YCWhaly Whaly is building a self-service analytics platform · whaly.io | still up |
| 2021-01-01 | YCTriplit The best database for app developers · triplit.dev | gone |
| 2021-06-01 | Observability for Data Engineering Teams · lariatdata.com | gone |
| 2021-01-01 | YCNimbus Nimbus reduces Datadog costs by more than 60% without Manual Effort · nimbus.dev | gone |
| 2021-01-01 | YCPlatypus The Distributed Data Operating System · getplatypus.com | gone |
| 2021-01-01 | The highest-accuracy global weather data from low-cost flat satellites · careweather.com | still up |
| 2021-06-01 | YCPatterns Next-Gen Financial Analysis and Reporting with AI Agents · patterns.app | gone |
| 2021-01-01 | YCClear The unbiased AI and data layer for skin health. · getclearapp.com | still up |
| 2021-01-01 | YCObserva Catch accidental database exposures before the bad guys · observa.com | gone |
| 2021-06-01 | Analytics for builders. Record and query billions of datapoints with… · scratchdata.com | gone |
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.