You asked about SaaS
19 people built something like it. 5 are gone.
That is 29% of the ones whose fate we could settle, against 23% across the whole register. 2 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2014-01-01 | YCAlgolia A developer-friendly and enterprise-grade search API. · algolia.com | still up |
| 2020-01-01 | YCBelvo Open Finance API platform for Latam. · belvo.com | still up |
| 2019-06-01 | Financial connectivity API for consumer liabilities · methodfi.com | still up |
| 2021-06-01 | YCMalga Malga is an API to accept payments with multiple payment providers · malga.io | still up |
| 2021-06-01 | YCCoast Demo Platform for API-First Companies · trycoast.com | still up |
| 2023-01-01 | YCFern Instantly offer SDKs and API Docs · buildwithfern.com | acquired |
| 2021-01-01 | API for developers and AIs to access health data · tryterra.co | still up |
| 2022-01-01 | YCVelt SDK for adding an agent and human governance layer to your product · velt.dev | still up |
| 2020-01-01 | YCRevenir First API solution for tax returns. · revenir.ai | still up |
| 2016-01-01 | YCElucify Elucify is an API that plugs into your CRM which automatically cleans… · getelucify.com | gone |
| 2022-06-01 | The Unified API for Business Financial Data · integrationlabs.co | gone |
| 2019-01-01 | YCFuse Unified API for financial data aggregators. · letsfuse.com | gone |
| 2023-01-01 | YCNango A single API for all your integrations · nango.dev | still up |
| 2020-01-01 | YCEnveloop Design and send messages from your app with a simple API. · enveloop.com | gone |
| 2020-01-01 | YCQuill Fullstack API and management platform for dashboards and reporting · quill.co | still up |
| 2022-06-01 | API for Retrieval Augmented Generation · superpowered.ai | gone |
| 2018-01-01 | Dental Insurance API · onederful.co | acquired |
| 2022-01-01 | Open-source API & UI test automation · karatelabs.io | still up |
| 2021-01-01 | YCWaypoint The email API built for product teams · usewaypoint.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.