You asked about Next-gen Network Security
804 people built something like it. 0 are gone.
That is 0% of the ones whose fate we could settle, against 23% across the whole register.
| 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 |
| 2017-01-01 | AI company transforming enterprise physical security to prevent… · ambient.ai | 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 | YCauthzed Authorization Infrastructure securing AI at OpenAI, Zoom, & more · authzed.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 |
| 2025-09-01 | YCBolna AI Voice AI to enable India's next billion · bolna.ai | still up |
| 2020-06-01 | YCSwif.ai Manage every device. Govern every AI agent. · swif.ai | still up |
| 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 |
| 2019-06-01 | YCTraces Transform your video monitoring with AI · traces.ai | still up |
| 2022-01-01 | IndustrialNext builds the AI brain for manufacturing –… · industrialnext.ai | still up |
| 2026-01-01 | The Networking Layer of AI · pirislabs.io | still up |
| 2022-01-01 | YCStrac Data Discovery, DLP, DSPM for SaaS, Cloud, Gen AI & Endpoints · strac.io | still up |
| 2024-06-01 | YCUnbound Use AI tools without fear of data leakage · getunbound.ai | 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 |
| 2026-06-01 | Network for Physical AI Data Business · deepreach.ai | still up |
| 2024-09-01 | YCSymphony Voice AI sims for next-gen employee training · getsymphony.co | still up |
| 2023-06-01 | We get patients to their next appointment · simbie.ai | 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 | YCAffil.ai AI Affiliate Network For Financial Companies · affil.ai | still up |
| 2024-06-01 | YCcmux Open source applied AI lab building next-gen devtools · cmux.com | still up |
| 2025-06-01 | AI infrastructure for biosecurity · twentytwo.bio | still up |
| 2024-01-01 | YCRisotto Risotto auto-solves IT support requests using AI · tryrisotto.com | still up |
| 2023-01-01 | Detect every data leak into third-party GenAI tools · compliantllm.com | still up |
| 2024-06-01 | YCwinfunc ai-native security engineering for mission critical codebases · winfunc.com | still up |
| 2026-06-01 | CrowdStrike for AI Agents · traceforce.ai | still up |
| 2025-09-01 | AI Agents for Platform Engineering · usekestrel.ai | still up |
| 2026-06-01 | YCFabraix The world's frontier hacker of AI agents. · fabraix.com | still up |
| 2022-06-01 | YCAtlas AI contract agent: Fill a template, get signed, and run next actions. · atlaswork.ai | still up |
| 2026-06-01 | Scale AI scientists whose own breakthroughs accelerate the next. · rekursiv.ai | still up |
| 2025-09-01 | The sensitive data redaction layer for AI · logosguard.com | still up |
| 2026-01-01 | The control plane for AI agents. · agenticfabriq.com | still up |
| 2022-01-01 | YCAndi AI Search for the Next Generation · andiai.com | still up |
| 2024-01-01 | Security for AI-native developers · superagent.sh | still up |
| 2026-06-01 | YCDecawork Training company-specific models that approve AI actions. · decawork.ai | still up |
| 2024-01-01 | LLM Security and Compliance · promptarmor.com | still up |
| 2015-01-01 | Rebuilding healthcare with AI at the core · akidolabs.com | still up |
| 2022-11-02 | photoai.com | still up |
| 2016-01-01 | AI-First Creative Partner for Enterprise Teams · superside.com | still up |
| 2018-06-01 | YCLeena AI We at Leena AI build a virtual assistant that answers employee's… · leena.ai | still up |
| 2016-06-01 | YCScale AI Data-centric infrastructure to accelerate the development of AI · scale.com | still up |
| 2022-05-05 | supermeme.ai | still up |
| 2024-01-01 | YCLegora The AI workspace for lawyers · legora.com | 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 |
| 2016-06-01 | Harnesses business activity to unlock growth. · people.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 |
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.