Show HN: Kindlefall a 3D ARPG in the browser, built with Three.js https://ift.tt/FcBpSfL

Show HN: Kindlefall a 3D ARPG in the browser, built with Three.js https://ift.tt/b58KWYc October 12, 2026 at 01:38AM

Show HN: HarmoNova: A modern, customizable Hacker News reader for Chrome https://ift.tt/h7nuevV

Show HN: HarmoNova: A modern, customizable Hacker News reader for Chrome https://ift.tt/8DMPl0d October 12, 2026 at 01:42AM

Show HN: OpenClear – Self-hosted check and ACH fraud screening for small banks https://ift.tt/hbrfiIN

Show HN: OpenClear – Self-hosted check and ACH fraud screening for small banks https://ift.tt/uDb5VYF October 11, 2026 at 11:14PM

Show HN: Throw Alice and Bob into Sagittarius A* https://ift.tt/8gCGPxr

Show HN: Throw Alice and Bob into Sagittarius A* Black Hole Lab is an open source physics simulation of a rotating black hole and two observers, Alice and Bob. You can launch Alice and Bob on paths around or into the black hole and watch events play out. The simulation lets you see a slice of the physics with one or two dimensions of space plus one of time. As a fun extra, Alice and Bob each have a beacon that can transmit a radio wave in all directions. The simulation calculates and shows the wavefront of these signals, accounting for the warping of space and time by the black hole. The simulation also records whenever Alice and Bob receive each other's transmission. The simulation takes pains to respect Einstein's equations of general relativity. To the precision of the numerical integration, the effects shown in Black Hole Lab are really what the math of general relativity says will happen. Black Hole Lab specifically uses the Kerr metric, which is an exact solution to Einstein's equations of general relativity for a rotating mass. That said, physicists agree that general relativity cannot be the final word on black hole physics. Nobody can say what would really happen to Alice and Bob. My original goal for black hole lab was to try to understand the strange time compression effects at the inner horizon, which physicists call infinite blueshift. IMHO, Black Hole Lab succeeds in showing this effect in an understandable way. I added a specific discussion of infinite blueshift in the readme. https://ift.tt/L1VdtNm October 11, 2026 at 04:28AM

Show HN: A functioning Celery Man computer https://ift.tt/a0Jls46

Show HN: A functioning Celery Man computer Hi HN! It dawned on me that the latest AI models (Minimax H3 Max / Audio, GPT-6 Luna) can finally recreate the computer from the classic Tim & Eric Celery Man sketch. I spent a few days creating it: it has 100% parity with the original script, plus anything you ask for (doggy woof woof man or potato boy). Happy to answer any questions about the pipeline! https://celeryman.fun/ October 11, 2026 at 01:08AM

Show HN: An agent harness for long-running pentests and code audits https://ift.tt/VpaAz4t

Show HN: An agent harness for long-running pentests and code audits https://ift.tt/xNu7rB5 October 10, 2026 at 10:59PM

Show HN: Let your AI agents paint big arrows, boxes and text on your screen https://ift.tt/Gwj6Pbg

Show HN: Let your AI agents paint big arrows, boxes and text on your screen https://ift.tt/SBvYbOV October 9, 2026 at 06:03PM

Show HN: Coolphabets – Teaching kids to read and write in their mother tongue https://ift.tt/tremJUW

Show HN: Coolphabets – Teaching kids to read and write in their mother tongue COOL + ALPHABETS = COOLPHABETS COOLPHABETS teaches you to read and write in your mother tongue - for kids who are just starting, and adults who never did. Millions of families live outside the country they were born in. While parents can read and write in their native language, their kids - the second generation - can barely do so. Kids often speak their mother tongue fluently because it is the language they use at home. But reading and writing is rarely a "felt need" for them. And kids are unlikely to feel that need unless parents nudge them - preferably at an early age. Many parents genuinely want their kids to be able to read and write in their mother tongue. This usually means a textbook or a weekend language class. Both can feel like a chore. Most language apps teach you to 'speak' a language. COOLPHABETS teaches you to 'read' and 'write'. Reading and writing are a genuinely difficult problem to solve - especially on an app. Getting a child to write letters correctly is the harder part. That's where we built CoolphaSense - a collection of tiny AI models that run entirely on the device and provide instant feedback on handwriting. COOLPHABETS is designed for kids. No ads. No tracking. COPPA compliant. The apps are designed to work fully offline. No cloud roundtrips to a 'Mothership AI model'. COOLPHABETS is currently available in Indian languages. - Telugu - Kannada - Hindi - Tamil - Marathi Most other Indian languages will be onboarded by December 2026. Other world languages (Asian, Middle Eastern, European) are early next year. The bigger motivation is cultural. A language can survive for several generations as a spoken language, but if its script is lost, something important is lost with it. If one generation stops reading and writing in its native script, reconnecting with that part of the culture becomes much harder. If you are a parent who feels this way, COOLPHABETS is for you and your kids. https://ift.tt/OX0q3pG Android: https://ift.tt/t91oB7F... iPhone: https://ift.tt/Ml60bDJ We would love to hear from parents settled outside their native countries, parents raising kids in multilingual households, and from people working on handwriting recognition, on-device AI/ML, and language learning. October 9, 2026 at 11:05PM

Show HN: Pocketty – iPhone SSH terminal that pings you when an agent is blocked https://ift.tt/ErMOfZe

Show HN: Pocketty – iPhone SSH terminal that pings you when an agent is blocked Hello~! pocketty is an SSH terminal for iPhone and iPad, made for herdr. herdr keeps your agent panes alive on your computer and knows the state of each one: working, needs you, or done. I made this in anger/desperation for the latter half of my recent paternity leave. Nap traps are sweet, but there's only so much doom-scrolling and movie-watching I can handle... In any event, I've been using it for the last couple months and no longer have to be my desk anymore to be productive. Now the nap-traps are still productive (when i want them to be) ! How it works: - The app talks to your computer directly over plain SSH. Tailscale is the easy way to reach it from anywhere but any SSH host you can reach works. - A small Rust daemon on the host watches herdr. When a pane needs you, it seals the alert to your phone's key with HPKE (X25519, ChaCha20-Poly1305). A stateless relay (pocketty's) on Cloudflare Workers passes the sealed bytes to APNs (Apple Push Notification servers), and a notification extension opens them on the phone. The relay can't read them and keeps nothing. - Your SSH key is made in the Secure Enclave and can't be exported. - The terminal uses libghostty-vt for state and draws with wgpu on Metal, so full-screen TUIs look like they do on your desk, albeit narrower. - Diffs for each agent turn, a file browser, and previews of `localhost` dev servers your agent starts, all through the same SSH connection. No port forwarding to set up. herdr and the daemon are optional. Without them, it's a normal SSH client. There's no account to set up and no analytics or tracking in the app. The app runs a 14-day free trial, with full feature access. Then, if you're as happy as I am with it, then it can be yours forever with a one-time purchase: $99 for the first two weeks (launch promo) then $129 after that. Happy to answer anything about the sealed push setup or running libghostty on iOS. https://pocketty.app/ October 9, 2026 at 01:11AM

Show HN: K10s – A Clickable Kubernetes TUI (Go, Bubble Tea) https://ift.tt/R3CDsUB

Show HN: K10s – A Clickable Kubernetes TUI (Go, Bubble Tea) https://ift.tt/CpIjw5M October 9, 2026 at 01:29AM

Show HN: Porch – a Mac menu bar work log for Claude Code and Codex sessions https://ift.tt/Ouhvoql

Show HN: Porch – a Mac menu bar work log for Claude Code and Codex sessions https://ift.tt/ciUmGKf October 8, 2026 at 08:57PM

Show HN: AI SRE Arena, an Open Benchmark for AI SRE Agents on Kubernetes https://ift.tt/BhK1oi5

Show HN: AI SRE Arena, an Open Benchmark for AI SRE Agents on Kubernetes https://ift.tt/e4TYzvn October 9, 2026 at 12:13AM

Show HN: Durable Actors – OSS Durable Objects with configurable compute https://ift.tt/BuKpvCD

Show HN: Durable Actors – OSS Durable Objects with configurable compute Hi HN, we're Thomas and Olivier from Terse ( https://ift.tt/Zu0DlU1 ) We've built Durable Actors, an open-source alternative to Cloudflare's Durable Objects. A Durable Object/Actor is a tiny server that handles one request at a time and has its own SQLite database. There's exactly one of each in the world and it is addressed by name. This is the perfect primitive for deploying multiplayer agents. Each agent can have its own Durable Actor, and each user can connect to that Actor via websocket. This is fully horizontally scalable. Your users can deploy and share agents at will without putting pressure on a central DB or websocket server. Durable Actors are also great for coordinating agents within a system. Since only one request is handled at a time, you can protect critical data such as a CRM and allow multiple agents to run concurrently without worrying about data races. The only alternative to this is Cloudflare's Durable Objects. However, there is extreme lock in (they pull you into D1, R2 + workers as well) and it wasn't originally built for agentic workfloads when it was released 5 years ago. Some notable projects built on Durable Objects include RampInspect, OpenInspect as well as the multiplayer frameworks Liveblocks and PartyKit. You can now build these kinds of projects on Durable Actors. Durable Actors is a version of DO that is built for concurrent agentic workloads. It is fully open source (MIT License) and includes a helm chart for you to easily self-host. Some key features: - Configurable compute: Specify CPU, RAM, data residency, idle-timeouts all in a decorator - No outer worker: We generate a type-safe client that you can just plug into your existing tech stack. - (coming soon, like today) Export SQLite table via CLI + MCP for exposing OLTP logs to your agent to help you debug. And our Performance Numbers (all p95): - Durable write: 85.6ms - Stateful Read (data in sqlite): 2.14ms - Actor Warm up: 334ms Here is a little counter demo so you can see the latency yourself: https://ift.tt/fDhOSqr Would love your feedback! https://ift.tt/7PXQnEa October 6, 2026 at 10:58PM