🛠️ All DevTools

Show HN: Maillune – Embeddable drag-and-drop email editor as a single component Alot of companies (Including the one i work at fulltime) use third party email builders to provide custom email functionality to users. However this is a niche sector and the prices are... insane?<p>So to try and fix this i built Maillune, a embeddable emailbuilder sdk that is alot cheaper with a usable free tier for hobby projects. The entire goal was to make the features transparent and logical. With lower focus on feature paywalls and aiming on a more &quot;Out of the box&quot; approach.<p>This is one of my recent projects ive built in parallel with my fulltime job. All feedback is welcome, good or bad!

Show HN: BibTeX-format, an Emacs compatable BibTeX formatter

Show HN: OpenYabby, voice-controlled multi-agent orchestrator for Claude Code

Grit: Rewriting Git in Rust with Agents

The LD_DEBUG environment variable (2012)

Claude Fable 5 System Card [pdf]: <a href="https:&#x2F;&#x2F;www-cdn.anthropic.com&#x2F;d00db56fa754a1b115b6dd7cb2e3c342ee809620.pdf" rel="nofollow">https:&#x2F;&#x2F;www-cdn.anthropic.com&#x2F;d00db56fa754a1b115b6dd7cb2e3c3...</a>

Apple decided not to roll out Siri in EU after denied request for exemption

Show HN: Claw Patrol, a security firewall for agents At Deno we&#x27;ve been using OpenClaw and other agents increasingly for addressing production problems in Deno Deploy - when a PagerDuty alert fires, the agent starts researching the cause and making fixes.<p>In order to do this, the agent needs access to real production systems - postgres, kubernetes, gcp, clickhouse, github, etc. But this is dangerous to say the least - we want destructive actions to be reviewed by other LLMs, approved by humans, and logged appropriately.<p>Claw Patrol terminates TCP connections over WireGuard or Tailscale, then parses application protocols (eg http, postgres, ssh) to apply rules that allow you to deny&#x2F;allow requests.<p>There are a few projects that sit as a proxy in front of agents to do secret injection or apply various guardrails, but none met our needs (LLM gateways, MCP proxies, sandboxes), particularly the need to handle low-level protocols, or handle complex real world situations like tunneling postgres through k8s.<p>Written in Go, configured in HCL, MIT licensed. Happy to answer any questions.

Pyodide 314.0: Python packages can now publish WebAssembly wheels to PyPI

Show HN: ChromiumFish – Open-source fingerprint-hardened Browser for Scraping

FCC Wants to Kill Burner Phones by Forcing Telecoms to Get All Customers' IDs

macOS 27 Beta breaks the ability to boot Asahi Linux <a href="https:&#x2F;&#x2F;social.treehouse.systems&#x2F;@AsahiLinux&#x2F;116719749555082847" rel="nofollow">https:&#x2F;&#x2F;social.treehouse.systems&#x2F;@AsahiLinux&#x2F;116719749555082...</a>

Show HN: Cate – open-source canvas IDE for agentic coding workflows

Build a Basic AI Agent from Scratch: Long Task Planning

US publishers tell Common Crawl to stop scraping and delete archive

Show HN: 3D print Z reinforcement via injected loops Commodity FDM print strength is limited by poor Z-axis layer bonding. Parts crack along Z under stress. MAGMA tries to fix this in software that works on any FDM 3D printer.<p>It&#x27;s a fork of OrcaSlicer with a new infill type that creates paired U-shaped vertical channels inside the print, plus G-code that injects molten plastic into those channels to bridge Z layer interfaces with continuous plastic.<p>Big caveat: I have a junky Ender 3 and haven&#x27;t gotten a clean physical print yet. Don&#x27;t expect this to work out of the box! After months of tinkering, I&#x27;m releasing the software so the 3DP community can experiment with nozzles, multi-material, weird hardware, and other print parameters I can&#x27;t. There&#x27;s around 40 MAGMA-specific settings to fiddle with, plus some general quality-of-life features (e.g. printing thin infill sections as solid, and a &quot;dual infill shell&quot; feature that applies MAGMA only to the outer shell to save print time).<p>THIS CODE IS ALPHA. Around 50 prints old. The injection G-code is novel. Some printer firmware won&#x27;t like extruding without movement. In extreme cases it could damage your printer or start a fire. DON&#x27;T WALK AWAY WHILE PRINTING.<p>Why MAGMA? &quot;Lava tubes&quot; is a misnomer. Molten rock is magma underground, lava only after it surfaces. The injected tubes are buried inside the print, so &quot;magma tubes&quot; is the correct term.

Show HN: UK sold house prices, uncapped, by postcode/county (Land Registry)

Show HN: Learn from 30 historical figures, open source, nonprofit, self-hosted Hello HN, I am the founder of Agora Cosmica.<p>This started about three years ago. On a walk I asked a chatbot to interpret the cave dream from Cormac McCarthy&#x27;s book &quot;The Road&quot; as C.G. Jung. It gave me a perspective I had not thought of. But for my own dreams the policies of the big providers felt wrong for so personal conversations, as zero data retention is not available. So I started building.<p>The project evolved to a German nonprofit and we published the code (AGPL-3.0) last month. The content is still copyright, but will be opened to CC-BY 4.0 in the next 6 to 12 months.<p>Agora Cosmica is a library to learn from 30 historical figures. Each one has 12 narrated stories about their teachings &#x2F; life wisdom, speech to speech conversation. Four learning modes and a council where you can gather the figures to discuss or reflect on a topic. Each figure is an AI Echo, an interpretation grounded in primary works, historical context, with a factcheck per figure to show what&#x27;s verified versus recreated. On privacy: The speech is self hosted on Hetzner GPU servers, Qwen3-TTS for German, Kokoro TTS for English, Faster-Whisper for transcription. 30 free messages per day (EU-hosted for GDPR), BYOK, or you can run it in a full local self-hosted mode.<p>No conversation is stored, no tracking cookies, no profiling, no signup.<p>The app is slow on purpose. Cosmic, no dopamine rush.<p>The mission is to be a doorway, a first step, an introduction to get people interested and outgrow the app to move to primary texts and human teachers.<p>Live at: <a href="https:&#x2F;&#x2F;agoracosmica.org" rel="nofollow">https:&#x2F;&#x2F;agoracosmica.org</a>

Show HN: Gravity – interactive solar-system simulator, from Newton to Einstein Just for fun and self education, I&#x27;ve built this over a weekend to teach myself why orbits exist, not just show planets going around. Something that was never clearly explain to me in school. It opens with a guided tour that builds the idea up step by step: two bodies and the equal&#x2F;opposite force, inertia (the Sun is removed and Earth just drifts straight), then &quot;an orbit is falling and continuously missing,&quot; cosmic velocities with a little rocket, Voyager 1 &amp; 2&#x27;s real gravity assists (the clock runs the actual 1977–1989 dates so the planets orbit into their grand-tour alignment and the slingshots line up), and it ends on Einstein — gravity as curved spacetime, the classic rubber-sheet well. What&#x27;s real: every body uses its real radius&#x2F;mass and J2000 orbital elements; positions come from solving Kepler&#x27;s equation each frame. You can toggle to an N-body mode (symplectic leapfrog) that shows live energy drift (~1e-6%) so you can see the integrator is honest. The only thing faked is scale — at true scale you can&#x27;t see anything — so there&#x27;s a toggle between true scale and a log-remapped &quot;visual&quot; scale, with physics always running in real AU. Tech: TypeScript + Three.js + Vite, fully client-side, no backend, works offline (surface textures are generated procedurally from value-noise; only Earth uses a real image). Source: <a href="https:&#x2F;&#x2F;github.com&#x2F;qunabu&#x2F;Gravity" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;qunabu&#x2F;Gravity</a><p>Happy to answer questions — and feedback on the physics or the explanations is very welcome. This project might be totally inaccurate in terms of real physics, this is how i do understand this on my own - i&#x27;m happy to confront this with reality

Test-case reducers are underappreciated debugging tools