Show HN: WinZST > 7-Zip fork with first-class compressed tar support on Windows https://ift.tt/fDmnBVi

Show HN: WinZST > 7-Zip fork with first-class compressed tar support on Windows WinZST is a 7-Zip fork that extracts compressed tar archives directly to their final directory instead of materializing an intermediate `.tar`. In one 11.8 GiB `.tar.gz` test containing mostly video, WinZST took 51.87s from archive → `foo/`; 7-Zip took 103.53s across `.tar.gz` → `.tar` → `foo/`. https://ift.tt/uaRsmOp September 5, 2026 at 12:58AM

Show HN: Rubato – Retro-Mac desk device mirrors AI coding state-ESP8266 https://ift.tt/9BJYUgO

Show HN: Rubato – Retro-Mac desk device mirrors AI coding state-ESP8266 Hi everyone! I have built an AI health device (ESP8266 + 240*240 screen). It can show AI Agents' status in real time with breathing bubble. And remind user dringking water, toilet, streth, etc. support: DeepSeek Harness, opencode, OpenClaw, Claude Code, Cursor. Hardware design, firmware and plugins are all opensource. urls are here: https://ift.tt/5yA78Zi https://ift.tt/Ky0Gxcg Type-c power supply, 2.4G wifi. Online sell on Tindie: https://ift.tt/4mUADLi... . But building your own is also OK. Ask me anything. Thanks. https://ift.tt/5yA78Zi September 5, 2026 at 12:16AM

Show HN: A gravity simulator where forces propagate at the speed of light https://ift.tt/B4Vd15K

Show HN: A gravity simulator where forces propagate at the speed of light https://ift.tt/5GxKh6l September 3, 2026 at 01:54PM

Show HN: Interactive map of the Japanese address system https://ift.tt/MqvT4LH

Show HN: Interactive map of the Japanese address system I had a hard time understanding the Japanese address system. Parts of addresses have suffixes like fu, shi, ku, chōme, ban and gō. Which suffixes are used varies between regions in a way that seemed random to me. I couldn't find a map of the system with a modern visualization, so I made one. It also shows whether an area has a governor or a mayor. For example Tokyo's wards have mayors and Osaka's don't. You can click around or drop the pin to explore, or write an address in the search bar. https://japanmap.fyi September 4, 2026 at 03:42AM

Show HN: Word42, a wordprocessor inspired by MS Word and Abiword https://ift.tt/YtwTKr4

Show HN: Word42, a wordprocessor inspired by MS Word and Abiword https://word42.org/ September 4, 2026 at 01:39AM

Show HN: Reactor Atlas https://ift.tt/jC7GmoU

Show HN: Reactor Atlas Hi HN, I'm a nuclear engineer and tech entrepreneur. After working for 3 years in the National Atomic Energy Commision (CNEA) in HPC software for nuclear simulations, I co-founded ratherlabs.com, a software company providing blockchain solutions for startups. Rather Labs business reached ~6 million usd in annual revenue in 2024; now demand is decreasing as our niche clients are using AI to launch their MVPs. Now I'm joining my scientific background with my entrepreneurial inclinations to think of problems related to the energy industry. Nuclear is experiencing a renaissance now (it was in a dark age when I was studying after the Fukushima event) so I think this is the right moment for me to jump again into the field. Reactor atlas is an interactive nuclear reactor map and an intelligence layer on top of it. The basic layer indexes: - power reactors - research reactors - fuel facilities with their history and projection, by country. The project is solving a fragmented information ecosystem, where operational and commercial data is hard to conciliate. Also, I'm monitoring nuclear news associated with each of the facilities, political declarations that may affect the nuclear landscape and geo-phisical news (like earthquakes) that could affect operation. On top of the operational + news layer, I'm creating an intelligence layer that will help institutions of different types make faster decisions by subscribing to very specific alerts. As an engineer, I used to code in fortran and c++ when I was working at CNEA, and later I participated in the first Rather Labs projects architecting complex async systems, mostly using MERN stack. I'm no longer coding anymore. I'm focused on designing robust systems with AI agents. I mainly used Claude Fable 5.1 to develop reactoratlas.com, deploying on vercel and using mostly nextjs, threejs, postgreSQL and some cron jobs to query and update data. I miss coding as in the old days, but I haven't code a single line in this project. And I strongly believe we humans shouldn't code anymore: our responsibility is now on designing and supervising AI systems. Thanks for your attention! https://ift.tt/Ww3bdTC September 3, 2026 at 09:33AM

Show HN: Play Hide and Seek vs. a Self-Improving Agent Using WebMCP https://ift.tt/u2WO9rX

Show HN: Play Hide and Seek vs. a Self-Improving Agent Using WebMCP Hey, built a small game to learn about the WebMCP standard. Use the Codex app, start a new chat in Work mode using Sol or Terra, open the built-in browser (cmd+shift+b), navigate to the url, and paste these instructions "Play the WebMCP game at https://lightcone-webmcp.netlify.app/ . Read the briefing tool first, then start playing when you're ready." https://lightcone-webmcp.netlify.app/ September 3, 2026 at 08:12AM