You asked about Developer Tools
107 people built something like it. 107 are gone.
That is 100% of the ones whose fate we could settle, against 23% across the whole register.
| Launched | What it was | Today |
|---|---|---|
| 2022-02-06 | wunderbucket.io | gone |
| 2022-01-31 | magistrate.khanna.law | gone |
| 2022-04-03 | secondhand.dev | gone |
| 2021-01-09 | convier.me | gone~19mo |
| 2021-05-28 | fusebot.io | gone |
| 2023-03-28 | airwalker.io | gone |
| 2023-12-07 | recompyle.com | gone |
| 2021-07-02 | hetchr.com | gone |
| 2012-06-01 | Acquired by Xenon Ventures.We enable website developers to hook into… · filestack.com | gone |
| 2022-07-31 | devraven.io | gone |
| 2021-06-09 | usegarnet.com | gone |
| 2021-01-01 | YCAXAR AI Multi-agent orchestration platform · axar.ai | gone |
| 2016-06-01 | YCSeerslab We are providing AR technologies and contents to app developers · argear.io | gone |
| 2021-06-30 | leapp.cloud | gone |
| 2022-10-26 | keyboardjobs.com | gone |
| 2021-04-12 | openresume.dev | gone |
| 2020-01-01 | YCDatree Datree prevents Kubernetes misconfigurations from reaching production · datree.io | gone |
| 2022-11-09 | nabaz.io | gone |
| 2021-04-14 | flutterchallenge.dev | gone |
| 2021-11-09 | dev.page | gone |
| 2020-06-01 | YCShuttle Build Backends. Fast. · shuttle.dev | gone |
| 2023-06-01 | YCAtla The improvement engine for AI agents · atla-ai.com | gone |
| 2020-06-01 | Data Quality & Playback Platform · streamdal.com | gone |
| 2020-01-01 | YCDropbase AI app builder for internal tools. Build back-office software faster… · dropbase.io | gone |
| 2021-03-23 | coursemaker.org | gone |
| 2023-02-03 | tools.9revolution9.com | gone |
| 2021-06-01 | Never code alone. · squire.ai | gone |
| 2023-10-05 | news.aiapipro.com | gone |
| 2021-03-16 | citonhub.com | gone |
| 2021-01-18 | fastlyn.com | gone~12mo |
| 2021-02-20 | logname.dev | gone~11mo |
| 2022-01-01 | YCPloomber Heroku for AI · ploomber.io | gone |
| 2021-01-29 | connectdome.com | gone |
| 2021-04-13 | codewrite.io | gone |
| 2023-07-02 | vairflow.com | gone |
| 2021-11-19 | gettrici.com | gone |
| 2018-06-01 | YCXkit Universal CRM integration for B2B SaaS apps · xkit.co | gone |
| 2012-06-01 | Eve is our way of bringing the power of computation to everyone, not… · kodowa.com | gone |
| 2023-01-01 | YCLynx AI platform for investigating and resolving engineering incidents · uselynx.ai | gone |
| 2022-01-01 | YCVessel Developer-first, native integration platform for GTM tools · vessel.dev | gone |
| 2023-07-25 | web-feed.dev | gone |
| 2021-06-01 | YCAbbot Your Customer Success Co-Pilot · ab.bot | gone |
| 2020-06-01 | YCDuckly Video chat with real-time collaboration. · duckly.com | gone |
| 2020-01-01 | YCEnveloop Design and send messages from your app with a simple API. · enveloop.com | gone |
| 2019-06-01 | YCUnflow The next generation CMS built for mobile apps · unflow.com | gone |
| 2023-11-20 | geogit.tech | gone |
| 2022-04-07 | codespread.io | gone |
| 2024-01-01 | YCTesseral The open source platform for managing identity in business software · tesseral.com | gone |
| 2023-06-01 | The publishing layer for the agentic internet · structuredlabs.com | gone |
| 2022-06-01 | No-code data curation for LLM fine-tuning and evaluation. · airtrain.ai | gone |
| 2022-06-01 | The IAM Policy Copilot · slauth.io | gone |
| 2022-06-01 | API for Retrieval Augmented Generation · superpowered.ai | gone |
| 2020-06-01 | YCReploy Instant, shareable staging environments · getreploy.com | gone |
| 2019-06-01 | YCLunaSec An Open Source dependency security tool that is smarter than the rest · lunasec.io | gone |
| 2023-06-01 | Aide is an AI-native , privacy-first IDE built on top of VSCode · aide.dev | gone |
| 2018-06-01 | YCContrast Developer Handoff - Reimagined for Storybook · mismatch.app | gone |
| 2019-06-01 | Turn any website into an API · dashblock.com | gone |
| 2012-01-01 | YCMarft Marft creates embeddable machine learning models for application… · marft.com | gone |
| 2019-06-01 | YCFlow Improve your browsing experience by staying organized and intentful · enterflow.app | gone |
| 2020-01-01 | YCPashi Pashi builds software to operate and optimize production lines. · pashi.com | gone |
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.