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Show HN: Real-time raytracing around a black hole

https://rivendell.dmitrybrant.com/blackhole/
2•dmitrybrant•2h ago
Another visualization that I've been wanting to make for a long time, and is now over the finish line with some agentic assistance. This is actual raytracing inside a curved spacetime, following geodesics given by a (simplified) solution to the field equations.

Show HN: Lathoa, a math app for kids where the AI is wrong on purpose

https://lathoa.ai/en
21•thanouil1411•9h ago•8 comments

Show HN: Ledge.sh – Runnable Markdown Notes

https://ledge.sh
76•dancablam•1d ago•40 comments

Show HN: JBR-001 – An open-source 3D printable desktop robot

https://projecthub.arduino.cc/syntheticaidata/jbr-001-a-desktop-companion-robot-powered-by-arduin...
121•gvuksic•1d ago•29 comments

Show HN: Perspica – A semantic diff for reviewing code

https://github.com/sshah03/perspica
4•sshah03•3h ago•1 comments

Show HN: A working 3D model of an Enigma machine

https://enigma.design
94•primitivesuave•1d ago•37 comments

Show HN: Dental Scope – Interactive 3D dental anatomy

https://dental-scope.com/
114•Zeruxe•1d ago•62 comments

Show HN: Strata – an expressive semantic layer that can say no to your LLM

https://strata.do/
18•ajoski9•9h ago•8 comments

Show HN: DragomanD – local language translator for Linux

https://dragomand.l10n-bg.dev/
3•eniac111•2h ago•0 comments

Show HN: Real-time raytracing around a black hole

https://rivendell.dmitrybrant.com/blackhole/
2•dmitrybrant•2h ago•0 comments

Show HN: Parrot – Open-Source Smart Meeting Recorder with Co-Pilot on Mac

https://openparrot.app
26•turantekin•8h ago•10 comments

Show HN: Using 2D DFT, dithering, etc. to maximize eInk manga image quality

https://github.com/ciromattia/kcc
76•seam_carver•2d ago•20 comments

Show HN: CLI and TUI control for dps150 power supply

https://github.com/hmldns/dps150ctl
2•Homo__Ludens•3h ago•0 comments

Show HN: NSL – WSL for Linux

https://frostyard.github.io/nsl/
161•bketelsen•1d ago•101 comments

Show HN: Domainpuff.com – Find memorable domain names within your budget

https://domainpuff.com/
2•brunoelylemon•4h ago•1 comments

Show HN: Real-time Solar System with 526k asteroids and all tracked satellites

https://space.bl2.net/
376•wanick•1d ago•104 comments

Show HN: Kyno – Direction as a first-class primitive for AI agents

https://cizambra.github.io/kyno/
4•cizambra•6h ago•0 comments

Show HN: I built a free Burp/Caido alternative but, zero setup - API Testing

https://apiaxess.dev
30•coding-maniac•6h ago•5 comments

Show HN: Token compression CLI to save Codex/Astra costs

7•yolandac•6h ago•4 comments

Show HN: TurboGPT: train 22KiB transformer in 13s

https://github.com/lostmsu/TurboGPT
53•lostmsu•1d ago•10 comments

Show HN: Datastory, Data storytelling with AI and an open knowledge graph

https://www.datastory.tech
6•DanielLapidus•7h ago•0 comments

Show HN: WattzGOAT – an intentionally vulnerable web app for security training

https://github.com/wattzgoat/wattzgoat-web
3•wattzgoat•7h ago•0 comments

Show HN: HN.watch – Videos of all Hacker News posts

https://hn.watch/
215•mrborgen•2d ago•97 comments

Show HN: I built a calendar where each event has its own tasks

https://apps.apple.com/ph/app/daily-planner-zesfy/id6479947874
3•waitinside•8h ago•1 comments

Show HN: Destroy Any Website with Stickman

https://destroy.spritefusion.com/
182•HugoDz•2d ago•40 comments

Show HN: Mingbird – an agent harness that makes a 2B model finish real tasks

https://github.com/Mingbird/Mingbird-agent
5•Gustor•9h ago•0 comments

Show HN: Jevstiller – Distill Jev into a local model, with a disagreement bound

https://jevstiller.pages.dev/posts/the-guarantee/
65•tgluck•1d ago•15 comments

Show HN: BreachProbe, find out if your app leaks its database

https://breachprobe.thecompound.tech
3•kyisaiah47•9h ago•0 comments

Show HN: Riffle – Switch between windows of the current Mac app with Option-Tab

https://github.com/voising/riffle
5•voising•9h ago•1 comments

Show HN: Free alternative to graphics design giants

https://scissor.studio/
139•sia_xi•2d ago•50 comments

Show HN: Fast, Lightroom-compatible RAW photo editor for Linux and macOS

https://github.com/pch/rawmakase
7•pchm•14h ago•0 comments