You asked about Next-gen Network Security
154 people built something like it. 3 are gone.
That is 2% of the ones whose fate we could settle, against 23% across the whole register. 4 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 |
| 2025-09-01 | YCAllus AI Transforming manufacturing with our next-gen Vision Foundation Model · allus.ai | still up |
| 2025-09-01 | Zero-trust authentication, authorization, and auditing for AI agents · multifactor.com | still up |
| 2025-09-01 | YCAntigen Continuous offensive security for the enterprise. · antigen.sh | still up |
| 2025-01-01 | Next-Generation Power Electronics · steinmetzmotors.com | still up |
| 2025-09-01 | AI Agents for Platform Engineering · usekestrel.ai | still up |
| 2025-06-01 | Next generation robot deployer · physicalturing.ai | still up |
| 2025-06-01 | Visibility and Controls for Browser Agents · contextfort.ai | still up |
| 2025-06-01 | YCAlter Privileged Access Management for AI Agents · alterauth.com | still up |
| 2025-01-01 | YCMundo AI The data layer for perceptual intelligence · mundoai.world | still up |
| 2025-01-01 | YCMastra The Javascript framework for building AI agents, from the Gatsby devs · mastra.ai | still up |
| 2025-06-01 | YCKERNEL Crazy fast, open source infra for AI agents to use the Internet · kernel.sh | still up |
| 2025-09-01 | YCUplane Replace marketing agencies with AI · uplane.com | still up |
| 2025-09-01 | YCBolna AI Voice AI to enable India's next billion · bolna.ai | still up |
| 2025-01-01 | Agents for Accelerated Clinical Trial Design · delineate.pro | still up |
| 2025-01-01 | Supply chain superintelligence for distribution and procurement · salespatriot.com | still up |
| 2025-06-01 | YCSolva Building the new superintelligence for insurance · solvatechnology.com | still up |
| 2025-01-01 | YCPickle The personal AI agent for Korea. · pickle.com | still up |
| 2025-01-01 | YCCalltree Enterprise-grade AI support reps for call centers · calltree.ai | still up |
| 2025-06-01 | YCMetis Infrastructure to build reliable agents · withmetis.ai | acquired |
| 2025-01-01 | AI voice and texting agents · leapingai.com | still up |
| 2025-01-01 | YCFuse AI Agentic Sales Platform · fuseai.com | still up |
| 2025-09-01 | Agentic AI for Society Builders · brickanta.com | still up |
| 2025-09-01 | YCMOVEdot AI Agents for Hardware Engineering · movedot.ai | still up |
| 2025-06-01 | Persistent computers for AI agents · dedaluslabs.ai | still up |
| 2025-06-01 | Email Inboxes for AI Agents · agentmail.to | still up |
| 2025-06-01 | YCVeritus AI agents for the consumer lending industry · veritus.com | still up |
| 2025-09-01 | YCComplyDo Global Compliance for Enterprises · complydo.io | still up |
| 2025-01-01 | Autonomous patrol-boats for National Security · splash9.com | still up |
| 2025-09-01 | Superintelligent financial advisor · becomeautonomous.com | still up |
| 2025-06-01 | YCComena AI agents for distributors and manufacturers to automate order entry. · comena.ai | still up |
| 2025-09-01 | AI agents for your healthcare back-office operations. · goclicks.ai | still up |
| 2025-06-01 | AI agents that automate administrative work across college campuses. · risely.ai | still up |
| 2025-09-01 | YCLeadbay Qualified leads for agentic workflows. · leadbay.ai | still up |
| 2025-06-01 | We help products get discovered & used by AI agents. · promptingcompany.com | still up |
| 2025-09-01 | YCRedapto Intelligence that moves the world · redapto.com | still up |
| 2025-01-01 | Production Monitoring & Evals for AI Agents · confident-ai.com | still up |
| 2025-01-01 | Agents that use the browser. · browser-use.com | still up |
| 2025-01-01 | Artificial Specialized Intelligence · zeroentropy.dev | acquired |
| 2025-01-01 | YCawen awen translates intent into exceptional visuals through conversation · awen.ai | still up |
| 2025-01-01 | YCOsmosis Reinforcement Learning (RL) for AI Agents · osmosis.ai | still up |
| 2025-01-01 | AI agents for CX teams, starting with training and QA. · solidroad.com | still up |
| 2025-09-01 | YCTrelium AI Agents for Enterprise Wide Operations · trelium.com | still up |
| 2025-01-01 | Reasoning Fine-Tuning · trainloop.ai | still up |
| 2025-06-01 | RNA intelligence for precision medicine · blank.bio | still up |
| 2025-09-01 | YCAbsurd The production canvas for AI film teams · absurd.com | still up |
| 2025-06-01 | Automatically blocking risky behavior with real-time governance agents · truthsystems.ai | still up |
| 2025-01-01 | YCBud Agent with a computer · bud.app | acquired |
| 2025-06-01 | YCAcrely Enterprise Voice Agents · acrely.ai | gone |
| 2025-06-01 | YCGhostEye Your always-on red team. · ghosteye.ai | still up |
| 2025-09-01 | Simulate your customers with AI agents · expectedparrot.com | still up |
| 2025-06-01 | YCAltur Voice AI Agents for Debt Collection · altur.io | still up |
| 2025-01-01 | An AI teammate that automatically updates your customer-facing docs · promptless.ai | still up |
| 2025-01-01 | YCMosaic Frontier Video Agents · mosaic.so | still up |
| 2025-01-01 | AI-driven exam prep · alice.tech | still up |
| 2025-06-01 | YCAstor Your personal investing agent · astor.app | still up |
| 2025-09-01 | YCKoyal Agentic AI Filmmaking Platform · koyal.ai | still up |
| 2025-01-01 | Voice AI teams for medicare agencies. · carecycle.ai | still up |
| 2025-06-01 | YCNotte Browser infra for AI agents: sessions, auth, proxies, payments · notte.cc | still up |
| 2025-06-01 | YCAutosana AI agents for E2E testing across mobile & web · autosana.ai | 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.