Show HN: I built a context layer for our home https://ift.tt/0AbqXN5

Show HN: I built a context layer for our home Rosey started as a grocery list. My wife and I kept losing track of which phone the list was on. So I built a number we could both text, a shared little assistant that just remembered. Once it remembered groceries, it was a small step to remembering the wifi password, the pediatrician's number, what we usually buy at our grocery store, what the plumber said. From there, the obvious idea: this is the household's context layer, the thing that knows the shared facts so neither person has to be the one who remembers. https://rosey.house April 30, 2026 at 08:15PM

Show HN: WhatCable, a tiny menu bar app for inspecting USB-C cables https://ift.tt/7Aepk0P

Show HN: WhatCable, a tiny menu bar app for inspecting USB-C cables USB-C cables can be a mess. One cable charges at 5W, another does 100W and Thunderbolt 4, and they look identical in the drawer. WhatCable sits in your menu bar and reads the cable data your Mac already has access to. Plug in a cable and it tells you in plain English what it can actually do: charging wattage, data speed, display support, Thunderbolt, etc. Built in Swift/SwiftUI. Open source, free, no tracking. GitHub: https://ift.tt/E9yRBUP https://ift.tt/E9yRBUP April 30, 2026 at 10:43PM

Show HN: Multiplayer Voronoi https://ift.tt/yKhgt97

Show HN: Multiplayer Voronoi A multiplayer hommage to Jean-Michel Sanejouand's Jeu de Topo (1963), a game with no winner or loser where partners arrange stones until both points of view are satisfied. Here, stones become colored points in a game based on Voronoi diagrams. The original opposing points of view become each player's screen: everyone shares the same points, but phones, tablets, and browser windows frame the space differently, so each player is likely seeing a different Voronoi view. https://ift.tt/8AsYmwn April 29, 2026 at 11:21PM

Show HN: Throwaway – open-source disposable email checker and API https://ift.tt/mgjZrPX

Show HN: Throwaway – open-source disposable email checker and API https://ift.tt/KBZsnhu April 30, 2026 at 12:34AM

Show HN: Bin collection calendars for the entire UK https://ift.tt/cKf7ohT

Show HN: Bin collection calendars for the entire UK Hi HN, I built ukbinday to provide a nicer way to find your bin collection days and actually remember when to put them out. It shows your upcoming collections and generates a calendar that updates automatically as the schedule comes out. Coverage is at about 85% of the UK so far and I'm working on getting that to 100%. There is also an API for the Home Automation community. This was built on top of two amazing open-source projects without which this would not exist: https://ift.tt/VdCMJq1 & https://ift.tt/RqvfTIw Thank you to all the contributors of those repositories! https://ukbinday.co.uk/ April 29, 2026 at 11:29PM

Show HN: A private-ish bookmark app that uses GitHub Gist as its back end https://ift.tt/Uwm1g8B

Show HN: A private-ish bookmark app that uses GitHub Gist as its back end https://ift.tt/rMKzvSV April 29, 2026 at 03:04AM

Show HN: Adblock-rust Manager – Firefox extension to enable the Brave ad blocker https://ift.tt/mGPaMzc

Show HN: Adblock-rust Manager – Firefox extension to enable the Brave ad blocker Firefox 149 ships adblock-rust (Brave's Rust engine, MPL-2.0) completely disabled with no UI. It's controlled by two about:config prefs with no WebExtension API, so you can't touch them programmatically from a standard extension. This extension gives it a UI: ETP toggle (via browser.privacy API, instant), filter list manager with clipboard helpers for the manual about:config steps, and 8 preset lists. You can also add your own if you so desire. https://ift.tt/ScdRho2 April 29, 2026 at 02:24AM