You asked about Next-gen Network Security
252 people built something like it. 3 are gone.
That is 1% of the ones whose fate we could settle, against 23% across the whole register. 3 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 | YCBolna AI Voice AI to enable India's next billion · bolna.ai | still up |
| 2025-01-01 | We build networks of AIs to simulate high-value audiences · societies.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 |
| 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 |
| 2025-06-01 | AI infrastructure for biosecurity · twentytwo.bio | still up |
| 2025-06-01 | YCAlter Secure access control and authorization platform for agent workflows · alterauth.com | still up |
| 2025-09-01 | The sensitive data redaction layer for AI · logosguard.com | still up |
| 2025-06-01 | Visibility and Controls for Browser Agents · contextfort.ai | still up |
| 2025-09-01 | AI Agents for Platform Engineering · usekestrel.ai | still up |
| 2025-01-01 | YCSpott AI-native ATS/CRM for recruiting firms · spott.io | still up |
| 2025-01-01 | Applied research lab curating data solutions for foundation model… · afterquery.com | still up |
| 2025-01-01 | YCMastra The Javascript framework for building AI agents, from the Gatsby devs · mastra.ai | still up |
| 2025-01-01 | YCMundo AI High Quality Multilingual Training Data for AI Models · mundoai.world | still up |
| 2025-09-01 | YCUplane Replace marketing agencies with AI · uplane.com | still up |
| 2025-06-01 | YCKERNEL Crazy fast, open source infra for AI agents to use the Internet · kernel.sh | still up |
| 2025-01-01 | Agents for Accelerated Clinical Trial Design · delineate.pro | still up |
| 2025-01-01 | YCPickle Where your life context becomes understanding. · pickle.com | still up |
| 2025-01-01 | YCHUD Platform for building RL environments and evals · hud.ai | still up |
| 2025-01-01 | YCConntour AI to monitor thousands of security cameras. · conntour.com | still up |
| 2025-01-01 | AI for insurance verification & billing at dental clinics · toothy.ai | 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 | YCMentra Building the open source smart glasses operating system. · mentra.glass | still up |
| 2025-01-01 | YCFuse AI Agentic Sales Platform · fuseai.com | still up |
| 2025-06-01 | YCLanesurf Book any load in 10 minutes · lanesurf.com | still up |
| 2025-06-01 | Optimizing fleet planning with data driven algorithms · fleetline.ai | still up |
| 2025-09-01 | Agentic AI for Society Builders · brickanta.com | still up |
| 2025-09-01 | The AI drawing review platform for architects and engineers. · getstructured.ai | still up |
| 2025-06-01 | Compute substrate for AI agents · dedaluslabs.ai | still up |
| 2025-06-01 | YCFinto AI accounting for enterprise finance teams · gofinto.com | still up |
| 2025-01-01 | YCYouShift The OS for hospital workforce management · you-shift.com | still up |
| 2025-06-01 | Email Inboxes for AI Agents · agentmail.to | still up |
| 2025-09-01 | YCComplyDo Global Compliance for Enterprises · complydo.io | still up |
| 2025-01-01 | Making humanoids dexterous enough to thread a needle · proception.ai | still up |
| 2025-06-01 | YCVeritus AI agents for the consumer lending industry · veritus.com | still up |
| 2025-06-01 | YCReacher We automate creator marketing for the world's largest brands · reacherapp.com | still up |
| 2025-09-01 | YCMOVEdot AI Agents for Hardware Engineering · movedot.ai | 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 | Tiny Edge AI For Tiny Devices · cactuscompute.com | still up |
| 2025-09-01 | YCLeadbay Qualified leads for agentic workflows. · leadbay.ai | still up |
| 2025-01-01 | YCScout AI-powered student information system for K-12 schools · scoutforschools.com | still up |
| 2025-06-01 | AI agents that automate administrative work across college campuses. · risely.ai | still up |
| 2025-06-01 | Replacing the restaurant phone line with Voice AI · certus-ai.com | still up |
| 2025-09-01 | AI agents for your healthcare back-office operations. · goclicks.ai | still up |
| 2025-01-01 | YCWoz Claude Code plugin that reduces token consumption and cost by 50% · wozcode.com | still up |
| 2025-01-01 | YCAsteroid The integration layer for healthcare: EHRs, payer portals & more · asteroid.ai | still up |
| 2025-06-01 | YCComena AI agents for distributors and manufacturers to automate order entry. · comena.ai | still up |
| 2025-09-01 | YCZavo AI Operating System for Restaurants · zavopay.com | still up |
| 2025-06-01 | We help products get discovered & used by AI agents. · promptingcompany.com | still up |
| 2025-06-01 | YCLuminal Making AI run fast on any hardware. · luminal.com | still up |
| 2025-01-01 | The LLM Eval and Observability Platform for AI Quality · confident-ai.com | still up |
| 2025-09-01 | YCRedapto Intelligence that moves the world · redapto.com | still up |
| 2025-01-01 | Agents that use the browser. · browser-use.com | still up |
| 2025-06-01 | YCAcrely Enterprise Voice Agents · acrely.ai | still up |
| 2025-06-01 | YCKnowlify The AI Explainer Video Maker · knowlify.com | 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.