Stackray

A tool for viewing a website's technology stack and target history in one dashboard.

A self-hosted, open-source tool that lets teams scan websites to identify their technologies and review a target site's history.

Prove Together

Let G be a finite bridgeless cubic graph (every vertex has degree 3 and no edge is a bridge).

One wave along the edge of the screen.

Sealed Rose

A detection tool that checks videos frame by frame for deepfakes and traces of AI generation

Users checking a video's authenticity can upload a clip or paste a direct link to analyze face swaps and traces of AI synthesis, and see a likely generation source.

A service for practicing English grammar and pronunciation with Azure speech technology

A web service where English learners aged 18 or older can practice grammar and pronunciation, then press a record button to say a prompted English phrase.

Special relativity simulator in which light crawls along at a human speed, so Lorentz contraction, aberration and Doppler shift happen at walking pace.

hcker.news

A Hacker News reader for searching stories and comments while filtering out noise

A reader for people following Hacker News stories and discussions who want to search stories and comments and filter out material they are not interested in.

TokenDelivery.ai

A model service that provides byte-for-byte identical answers to the same request.

It says it runs open-weight models deterministically to deliver the same answer every time for users who need consistent results from repeated requests.

Most Penalized HN Stories

A list of heavily penalized Hacker News stories

A page for readers who want to examine heavily penalized posts that ordinary Hacker News rankings may not reveal, alongside information such as points, comment counts and penalty multipliers.

Session Context

Everything a single web page can work out about the browser, device and person that requested it — stated in plain English, with the raw values behind every claim.

WinDuo

A tool that uses a webcam to detect laptop lid movement and add a folding transition effect to the screen

Users of supported Windows laptops can measure vertical movement in the webcam image without a separate hinge sensor to apply a folding effect that tilts, blurs and darkens the screen as the lid closes.

asdesai

An explanation of how to rotate arbitrary ASCII art in 3D using only C and printf

Technical content for programmers who want to understand or implement 3D rotation of ASCII graphics with simple C code.

Bodily Oddities

A collection, normal things human bodies can (sometimes) do: reflexes, illusions, sounds, tricks and rare abilities.

See Sounds on Your Webcam

A tool for visually examining sound direction in a webcam image

An experimental and demo tool for seeing sound through motion visible when clapping or speaking in front of a camera and through directional microphone input.

copperhead

An open-source AI agent that turns natural-language requirements into validated PCB deliverables

An AI engineering platform for hardware teams that want to generate board specifications, components, schematics, layouts, manufacturing files, firmware and test plans with validation at each stage.

Asm Editor

Write, learn and run M68K, MIPS, RISC-V, X86 and Z80 assembly code in your browser.

creepy

Creepy is a private AI agent for Android.

game-design-ai-practice-en

Free book: AI Workflow for Game Designers — No Fabricated Numbers.

Vertumnus

Printable posters of what's in season at your local farmers' market.

Dry Diving Club · 旱地跳水俱乐部

A browser diving game with comical stunts off a desert cliff

Players looking for a short, comical physics game can choose a character in the Karakum Desert, perform aerial stunts and tumbles, and view judges' scores and replays from multiple cameras.

chess960v2

Chess960v2 is an open experiment in engine chess: thousands of games from player‑chosen Chess960 starts, with full open data and code.