Show HN: DRM-Free Books https://ift.tt/jC3fAq1

Show HN: DRM-Free Books After several years of mandatory DRM lockdowns from most commercial book sources, now authors have a choice when it comes to DRM for their books. Pick authors and books that are DRM-free, or download DRM-free classics that are out of copyright. https://ift.tt/Qd3FKU6 https://ift.tt/Qd3FKU6 June 28, 2026 at 11:58PM

Show HN: Starglyphs - A constellation puzzle game based on Euler paths https://ift.tt/uPFYsq4

Show HN: Starglyphs - A constellation puzzle game based on Euler paths I am a big Dragon Age fan and sunk hundreds of hours into Inquisition. It had this minigame called astrariums where you had to solve these shapes based on constellation guides by tracing stars. I'm a hobby game dev and wondered if I could procedurally generate these puzzles so they were always solvable. Turns out you can, so I built a space puzzle game around it with a colorful aesthetic. I released it in web form here but I'm currently working on getting it on Steam and mobile. https://starglyphs.com June 28, 2026 at 04:50AM

Show HN: Wind particles on Mapbox from a single EXIF JPEG https://ift.tt/PyalHx1

Show HN: Wind particles on Mapbox from a single EXIF JPEG https://ift.tt/PkTWzYt June 28, 2026 at 01:16AM

Show HN: A Living Neural Web in HTML5 Canvas https://ift.tt/JEuR8AZ

Show HN: A Living Neural Web in HTML5 Canvas https://techoreon.github.io/verpad/canvas-playground.html June 27, 2026 at 11:35PM

Show HN: Puzzle with Strangers. A free multiplayer jigsaw https://ift.tt/pN4ghfb

Show HN: Puzzle with Strangers. A free multiplayer jigsaw I built this over the last few days. Me and handful of friends are successfully hooked. I recently went to a — for lack of a better word – social/collaborative performance at an art gallery in Berlin where a group of artists filled a huge industrial hall with wooden 10x10cm cubes for people to build structures with. It was beautiful how universal the concept of playing with wooden blocks is and how ephemeral the structures were, people of all ages were put back into a childlike play. The thought about what kind of games need zero explanation stuck with me and i built an anonymous multiplayer jigsaw. We've already spent hours in there and you're invited now as well. Hope you enjoy. https://ift.tt/gMmKZRH June 26, 2026 at 11:47PM

Show HN: I built a hardware quantum RNG and wired it into a Magic 8-Ball https://ift.tt/D8gIXN3

Show HN: I built a hardware quantum RNG and wired it into a Magic 8-Ball Gday, author here! I've wanted to hack together a "real" quantum random number generator for another upcoming project, and I got carried away a bit, and went down the 'over-engineering' cliff. So, for your nerdy enjoyment, I have documented it all up, and I added something cool for fellow "Multiple World Interpretation" followers in the Quantum Mechanics debate. This QRNG uses sexy bits: Each is the decision of a photon to go left or right after hitting a 50:50 beam splitter. Standard kinda device, where you attenuate a light source down to single photons, offer them semi-mirror to bounce off, and see which PMT detector they hit (or which universe we ended up in ;) ). Basically, Through → bit=0. Bounce → bit=1. As I take the MWI interpretation of Quantum Mechanics (its the more fun options), I have also built a Quantum Magic 8-Ball. Ask it a questions, and you get and receive exactly one answer here, plus every possible answer across the multiverse. https://quantumlever.stream/oracle Enjoy! https://dnhkng.github.io/posts/building-the-beam-universe-splitter/ June 27, 2026 at 01:05AM

Show HN: A map of every UK railway, including stations that no longer exist https://ift.tt/uOrc5Hi

Show HN: A map of every UK railway, including stations that no longer exist Author here (Nathan). The goal for this site was to map the entire UK rail network: not just the parts a journey planner surfaces, but heritage lines, freight-only curves, named tunnels and viaducts, and the thousands of stations that have closed and were never mapped. The project is built entirely on open data. Lines and current stations come from OpenStreetMap via Overpass, closed stations from Wikidata (approximately 6,100 that fall outside a 250 m radius of a live OSM station), and postcode lookups from postcodes.io. The main challenge is that the sources rarely agree with one another, or even with themselves, so much of the work involved small reconciliation rules. For example, the heritage flag is propagated across every segment sharing a line name, so the Swanage Railway is coloured consistently. I shared an early version with a railway enthusiast community, and a large share of the fixes came from people who know the network considerably better than I do. A full write-up of the data challenges is available here: https://ift.tt/5dJPTvN No account or app is required. You can search by postcode, station name, three-letter code, or line name. Corrections are very welcome, as there is always a station someone knows I have got wrong. https://ift.tt/pYOXfT0 June 27, 2026 at 12:44AM

Show HN: Smart model routing directly in Claude, Codex and Cursor https://ift.tt/m5dw3QN

Show HN: Smart model routing directly in Claude, Codex and Cursor We built a model router that plugs into coding agents (e.g. Claude Code, Codex, Cursor, etc.) and intelligently sends requests to the best model to serve them. Here's a quick demo of running it locally: https://www.youtube.com/watch?v=isKhAyivtfM . At Weave, we write ~all our code with AI, and it's been getting more expensive. This came to a head when Opus 4.7 was released and, thanks to its tokenizer changes, our costs shot up. We knew we didn't need Opus for everything but we didn't want to lose out on the intelligence for the cases where you really need it. So we decided to build a model router to handle this for us. The Weave Router acts as an Anthropic/OpenAI endpoint specifically for coding agents. It looks at every inference request and intelligently (more on that in a sec) decides what model to send it to, handling all the translations required along the way. So it can use faster/cheaper models (e.g. DeepSeek v4, GLM 5.2, Kimi K2.6) when possible, and frontier models (Opus 4.8 & GPT 5.5 (& Fable whenever it's back)) when necessary. How do we know what model to route to? We trained an RL model on tens of thousands (so far!) of agent traces. We reward the routing model when it selects an LLM that successfully completes the given task. Here's an example: if you ask the router to plan a complex change, it will (probably) route that request to Opus 4.8. Subagents exploring the codebase to gather context will be routed to more suitable models (e.g. DeepSeek V4 Flash). Then when you have the plan ready to implement, it will be (most likely) be handed to a quicker model (e.g. GLM 5.2) to carry it out. We've been using this internally for the last month or so. We've saved 40% on tokens vs. what we otherwise would have paid, with no noticeable differences in quality or velocity. The router is source-available under Elastic License 2.0, so you can self-host it. Or if you prefer, you can also use our hosted version: weaverouter.com. I'll be here to answer any questions you may have! https://ift.tt/0EhpkNu June 26, 2026 at 11:40PM

Show HN: Hikaru Labs – Bulk image and file processing, 100% in-browser https://ift.tt/P0ngztS

Show HN: Hikaru Labs – Bulk image and file processing, 100% in-browser https://hikarulabs.xyz June 25, 2026 at 10:48PM

Show HN: Bible as RAG Database https://ift.tt/FuMYhno

Show HN: Bible as RAG Database Made this in a free evening. Index an permissive license translation of the Bible (WEB) into a RAG database to allow returning passages of similar semantic meaning. Lots of fun. For example, "more money more problems" returns Ecclesiastes 5:9-13 which, I'll just say, is spot on.. "Moreover the profit of the earth is for all. The king profits from the field. He who loves silver shall not be satisfied with silver, nor he who loves abundance, with increase. This also is vanity. When goods increase, those who eat them are increased; and what advantage is there to its owner, except to feast on them with his eyes? The sleep of a laboring man is sweet, whether he eats little or much; but the abundance of the rich will not allow him to sleep. There is a grievous evil which I have seen under the sun: wealth kept by its owner to his harm." Anyway - thought it was fun enough to share. It's slow and I vibe coded it so I haven't sorted out how to make it not take 15 seconds to vector search against the full 4GB index. https://ift.tt/OxhmjaJ June 25, 2026 at 08:42AM

Show HN: Top' for Redis Using eBPF https://ift.tt/bVuRtZQ

Show HN: Top' for Redis Using eBPF https://ift.tt/moIVgAh June 26, 2026 at 12:01AM

Show HN: iOS Apps on Linux https://ift.tt/isPmcQ9

Show HN: iOS Apps on Linux We developed and tested SwiftUI for Linux (and AppKit, NSFoundation, etc.) -- looking for more Swift apps to test on Linux! https://ift.tt/IgNSofv June 25, 2026 at 10:29PM

Show HN: DBOSify – Drop-in Temporal replacement built on Postgres https://ift.tt/LF6mgEb

Show HN: DBOSify – Drop-in Temporal replacement built on Postgres https://ift.tt/l0q4vRB June 25, 2026 at 12:20AM