You asked about Next-gen Network Security
663 people built something like it. 77 are gone.
That is 12% of the ones whose fate we could settle, against 23% across the whole register. 30 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2025-06-01 | YCPangolin Open networking and security for your workforce, AI agents, and infra · pangolin.net | still up |
| 2021-01-01 | YCCyble Cyble - World’s First Intelligence-Driven, AI-Native Security… · cyble.com | still up |
| 2021-01-01 | Building the next generation AI creative studio · moonvalley.com | still up |
| 2022-01-01 | YCAgency Agency replaces traditional security and compliance headcount with AI. · getagency.com | still up |
| 2021-01-01 | DreamWorld is a next-gen Minecraft with generative AI building · playdreamworld.com | still up |
| 2017-06-01 | YCD-ID Enable creators and developers to generate realistic AI personas · d-id.com | still up |
| 2020-06-01 | YCSwif.ai Manage every device. Govern every AI agent. · swif.ai | still up |
| 2023-08-08 | allclues.ai | gone |
| 2024-06-01 | Automate security and privacy reviews · clearly-ai.com | still up |
| 2023-02-14 | grid.is | still up |
| 2021-06-01 | Security Delivery Platform to orchestrate AI agents for Service… · contraforce.com | still up |
| 2023-01-01 | The Control Plane for Enterprise Agents · credal.ai | still up |
| 2023-01-01 | YCVariance AI Agents for Fraud Review and Investigations · variance.com | still up |
| 2020-01-01 | YCSkypher AI agent for Compliance Questionnaires Automation · skypher.co | still up |
| 2022-01-01 | YCStrac Data Discovery, DLP, DSPM for SaaS, Cloud, Gen AI & Endpoints · strac.io | still up |
| 2025-09-01 | Zero-trust authentication, authorization, and auditing for AI agents · multifactor.com | still up |
| 2025-09-01 | YCAllus AI Transforming manufacturing with our next-gen Vision Foundation Model · allus.ai | still up |
| 2024-09-01 | YCSymphony Voice AI sims for next-gen employee training · getsymphony.co | still up |
| 2026-01-01 | The AI-native platform for next-generation protein characterization. · 10xscience.com | still up |
| 2021-06-01 | Web infra for AI agents · hyperbrowser.ai | still up |
| 2024-06-01 | YCcmux Open source applied AI lab building next-gen devtools · cmux.com | still up |
| 2023-01-01 | Detect every data leak into third-party GenAI tools · compliantllm.com | still up |
| 2021-06-01 | YCPatterns Next-Gen Financial Analysis and Reporting with AI Agents · patterns.app | gone |
| 2024-01-01 | YCAedilic Open-Source AI-generated image/deepfake detection · nonescape.com | gone |
| 2026-09-01 | YCUFO.ai Next-generation agent operating system · ufo.ai | still up |
| 2026-09-01 | Continuous security verification for AI agents in regulated industries · armorerlabs.com | still up |
| 2024-01-01 | Security for AI-native developers · superagent.sh | still up |
| 2026-01-01 | The control plane for AI agents. · agenticfabriq.com | still up |
| 2026-06-01 | YCFabraix The world's frontier hacker of AI agents. · fabraix.com | still up |
| 2025-06-01 | YCAlter Privileged Access Management for AI Agents · alterauth.com | still up |
| 2022-01-01 | YCAndi AI Search for the Next Generation · andiai.com | still up |
| 2025-09-01 | AI Agents for Platform Engineering · usekestrel.ai | still up |
| 2026-06-01 | CrowdStrike for AI Agents · traceforce.ai | still up |
| 2024-01-01 | LLM Security and Compliance · promptarmor.com | still up |
| 2022-11-02 | photoai.com | still up |
| 2022-08-23 | pornpen.ai | gone |
| 2022-11-30 | thegist.ai | gone |
| 2018-06-01 | YCLeena AI We at Leena AI build a virtual assistant that answers employee's… · leena.ai | still up |
| 2022-05-05 | supermeme.ai | still up |
| 2022-10-20 | durable.com | still up |
| 2022-10-24 | getitout.io | still up |
| 2012-06-01 | YCPlivo Voice AI Agents for customer engagement, including WhatsApp, SMS &… · plivo.com | still up |
| 2022-10-27 | snipd.com | still up |
| 2022-10-27 | astria.ai | still up |
| 2016-01-01 | YCSendbird The AI agent that doesn’t just support, it delights. · sendbird.com | still up |
| 2023-03-28 | regex.ai | still up |
| 2023-02-21 | phind.com | unverified |
| 2017-06-01 | YCJerry Jerry is building the AI agent to manage all your physical assets. · jerry.ai | still up |
| 2023-02-08 | stackoverflow.gg | unverified |
| 2022-10-31 | toolbox.nesslabs.com | still up |
| 2018-01-01 | Jasper is a leader in creating content using Artificial Intelligence · jasper.ai | still up |
| 2022-05-17 | urzas.ai | still up |
| 2022-01-06 | mailshake.com | still up |
| 2023-09-08 | rivet.ironcladapp.com | still up |
| 2022-01-31 | ideas-generator.com | gone |
| 2022-06-02 | yepic.ai | still up |
| 2022-10-30 | quizgecko.com | unverified |
| 2022-06-18 | ugurkilci.com | still up |
| 2022-02-09 | substrata.me | unverified |
| 2020-06-01 | YCTaktile Transform your decision-making with reliable AI agents in weeks, not… · taktile.com | still up |
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.