You asked about Monitoring

67 people built something like it. 13 are gone.

That is 22% of the ones whose fate we could settle, against 23% across the whole register. 9 were acquired.

Matching
73
Gone
22%
Median life
—
Acquired
9

Matching launches · 60 of 73

checked 3 hours ago · 6,184 probed today
LaunchedWhat it wasToday
2010-06-01
Real-time visibility into critical apps and services all in one place. · pagerduty.com
acquired
2022-03-15
zipy.ai
still up
2022-10-20
playerzero.app
unverified
2022-04-12
pulsetic.com
still up
2023-10-02
openstatus.dev
still up
2022-05-10
iter8app.com
gone
2022-10-03
ohdear.app
still up
2022-05-24
reviewflowz.com
still up
2022-03-25
flagright.com
still up
2022-01-08
cronly.app
still up
2022-06-14
getchestr.com
still up
2019-01-01
First IoT reliability platform for debugging, monitoring, OTA updates · memfault.com
acquired
2020-06-01
At-Home health monitoring with silicon photonic chips for data centers · siphoxhealth.com
still up
2022-03-15
zipy.ai
still up
2015-01-01
Remote patient monitoring for lung disease patients. · spirehealth.com
acquired
2018-06-01
AIoT monitoring, workflow, and evidence systems for regulated labs. · ilabservice.ai
still up
2022-07-31
devraven.io
gone
2022-06-23
nerdcrawler.com
unverified
2023-06-26
kadeck.com
still up
2024-01-01
Open-source, extensible AI gateway with observability and evals · respan.ai
still up
2021-06-14
monika.hyperjump.tech
still up
2022-02-24
kordon.io
still up
2023-06-13
brotandgames.com
still up
2023-05-10
wolfia.com
still up
2023-08-09
hawkflow.ai
unverified
2021-05-21
odown.io
moved
2023-03-09
swishjam.com
moved
2016-01-01
Network monitoring from the end-user perspective · netbeez.net
still up
2014-06-01
A self-healing platform to enrich and fix server alerts automatically · neptune.io
gone
2019-06-01
Transform your video monitoring with AI · traces.ai
still up
2024-06-01
Simulation & Evaluation that scales voice and chat AI agents · coval.dev
still up
2021-08-08
beta.rocketcompute.com
gone
2024-01-01
Sentry for AI Agents · raindrop.ai
still up
2021-07-27
bitcoind.observer
gone
2025-01-01
AI performance monitoring for factory workers · optifye.ai
still up
2023-01-01
The open source, fullstack monitoring platform: stop guessing why… · highlight.io
acquired
2023-09-05
kshivendu.dev
still up
2025-01-01
Production Monitoring & Evals for AI Agents · confident-ai.com
still up
2022-06-20
tunnelhub.io
still up
2023-12-13
pandapatrol.io
gone
2026-09-01
The world's most advanced security monitoring service · verdun.ai
still up
2021-07-15
checkify.io
unverified
2026-09-06
openmonitor.website
still up
2023-09-06
watchmyssl.com
still up
2022-04-28
leafnode.nl
still up
2023-05-17
printnanny.ai
gone
2018-01-01
iPhone-based driver monitoring for commercial fleets. · observantai.com
still up
2023-06-15
priceincheck.com
gone
2023-11-08
uptimefunk.com
still up
2023-01-01
The open-source AIOps platform · keephq.dev
acquired
2022-07-21
cast.ai
still up
2019-06-01
User behavior monitoring for modern product teams · lantern.so
gone
2025-06-01
Implantable microchips and AI for cattle monitoring · nexa.farm
acquired
2015-06-01
Open-source tools for deploying, managing, and monitoring cloud… · convox.com
acquired
2018-06-01
Distributed AI for Industrial Process Monitoring and Optimization. · numericcal.com
gone
2026-06-01
AI that runs factories. · controlseat.com
still up
2026-06-01
We find where AI agents fail, then train better models to run them. · agnost.ai
still up
2013-06-01
Remote monitoring & activity tracking system for seniors. · amulyte.com
gone
2024-01-01
Modern patient engagement and remote therapeutic monitoring platform · copperhealth.co
still up
2021-01-01
Software for remote monitoring of cancer patients · zealth-ai.com
still up

How this compares

Where they launched

share gone · line is the 23% average
  1. Product Hunt 813%
  2. Show HN 2030%
  3. Y Combinator 3020%

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.

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.