You asked about Time Series
11 people built something like it. 1 is gone.
That is 9% of the ones whose fate we could settle, against 23% across the whole register.
| Launched | What it was | Today |
|---|---|---|
| 2024-06-01 | Foundation models for time series · theforecastingcompany.com | still up |
| 2024-01-01 | YCPointOne AI Time Platform for Law Firms · pointone.com | still up |
| 2024-01-01 | Real-time and two-way sync between CRMs and Databases · stacksync.com | still up |
| 2024-09-01 | Real-time B2B data via simple APIs · crustdata.com | still up |
| 2024-06-01 | Ultra-low latency inference cloud for real-time workloads · pipeshift.com | still up |
| 2024-01-01 | YCSonia Validated mental health support in your pocket, anytime. · soniahealth.com | still up |
| 2024-01-01 | YCMarblism AI Employees who love overtime · marblism.com | still up |
| 2024-09-01 | YCattimet Building the Prime Radiant · attimet.com | still up |
| 2024-09-01 | YCLuthor Real-time governance for enterprise communications · luthor.ai | still up |
| 2024-01-01 | One-time, device-based treatment for heart failure · seleramedical.com | gone |
| 2024-09-01 | YCISSEN AI realtime voice companion for language learning · issen.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.