news.ycombinator.com
Show HN: A music player built for Steam Deck with full gamepad navigationhttps://news.ycombinator.com/item?id=47675416Hi everyone, my name is Oleg. I’ve been using the Steam Deck OLED for over a year and a half, and I love it. It’s not perfect, but as a portable gaming PC it’s revolutionary in hardware and software design.I use it for gaming both portable and on my TV, sometimes connected to a NAS and even a GPU dock for heavier titles. It’s basically my main gaming machine now.One thing has always bothered me: there’s no decent audio player for Steam Deck. Yes, there are dozens of Linux music players, but they either have terrible interfaces, are overloaded, or just don’t feel right with a gamepad. Moving a mouse with the joystick works, but it’s tedious on the couch, especially when the Deck is connected to a TV. Fonts are tiny, navigation is awkward.So I decided to build my own player. I’ve been coding for personal projects for 12+ years, including two music players (for VK and Yandex Music), a movie streaming app, a terminal ChatGPT assistant, and other tools. My goal is to make a player that workApr 7, 2026 1:52 PM
alternatelife.xyz
Show HN: I built a site that turns your Steam gaming hours into a RL skill treehttps://alternatelife.xyz/Hey,A bit of context..So I think last week was my last straw, I hit 8k hours with dota and holy ** It finally hit me how much time I wasted on that game.I'm a software developer, I always wanted to develop something and put it out but was scared shitless to do so, I was kinda afraid to get bad traction, to fail or even worse to be completely ignored.so I decided to address two of these issues at once, stop playing dota and spend the weekend building a website that let you see what you could've done with your gaming hours.As an avid gamer for the last 20+ years, I know that it's only theoretical, cause sometimes, after a long day u just wanna chill infront of a game and you wouldn't go get a pilot license, obviously.but, a lot of other times, I would spend my days off, weekend, just gaming 10 hours straight like a mad man.In any case, hope u like it and maybe it sparks something in u!Apr 6, 2026 8:59 PM
play.google.com
Show HN: I built an app for comparing grocery prices across UK supermarketshttps://play.google.com/store/apps/details?id=com.wistfulcreations.GroceryCompare&hl=en_GBI'm a first year CS student at Sheffield and built this over the past year because I thought I could do better than Trolley.Stack: React Native & Typesense for vector search and filtering. An ETL pipeline runs in the background handling scraping and automatic product categorisation using embeddings.Covers Aldi, Tesco, Sainsbury's, Asda, Morrisons, Waitrose, Iceland, Ocado / M&S and Co-op. Clubcard and Nectar prices included. Sort by price per unit, filter by category and stores near you.This was fun to make, and I have a lot planned, with some WIP:- Basket Generation based on entering a shopping list and getting cheapest products for each store, and cheapest collection of stores for the cheapest total shop. Feels quite magical even in dev mode right now- Local price estimates. Local stores differ from online prices by up to 20% depending on store fascia. I'm thinking to record a basket of goods for each local store and use it to estimate local prices- Crowdsourced prices. Tricky one, dApr 6, 2026 11:26 AM
news.ycombinator.com
Tell HN: YouTube history setting privacy implicationshttps://news.ycombinator.com/item?id=47636933As user viewer (not channel owner) I have setup YouTube history to be only for max 3 months. Then auto-delete. Today I checked that this setting applies only to users' Video Watch History.One has to manually go https://myactivity.google.com/page?page=youtube_comment_likes to delete Your Likes and Dislikes on YouTube anddelete comments at https://myactivity.google.com/page?hl=en&utm_medium=web&utm_source=youtube&page=youtube_comments for deleting Youtube Comments.Apr 4, 2026 8:01 AM
science.nasa.gov
Meet NASA’s New Artemis II Science Officershttps://science.nasa.gov/missions/artemis/meet-nasas-new-artemis-ii-science-officers/NASA’s first Artemis II science officers—Kelsey Young, Trevor Graff, and Angela Garcia—are pioneering a new era of mission operations by integrating advanced lunar science directly into Mission Control. Their work will shape how future Artemis crews observe, analyze, and deepen our understanding of the Moon.Apr 3, 2026 5:35 PM
reinhardt-web.dev
Show HN: Reinhardt – Django/DRF-inspired full-stack web framework for Rusthttps://reinhardt-web.dev/quickstart/Reinhardt is a full-stack web framework for Rust inspired by Django and DRF. It bundles HTTP, ORM, auth, DI, and background tasks into one crate — feature flags let you pull in only what you need (minimal/standard/full), or use individual crates.Published as `reinhardt-web` on crates.io, imported as `reinhardt` in your code.I built it after moving from Django/DRF to Rust and repeatedly assembling the same Axum + ORM + migrations + auth stack.Two things I'd especially like feedback on: a built-in WASM+SSR reactive frontend (Pages), where a DSL-to-Rust codegen step (page!/head!/form! macros) produces both client WASM and server HTML from one source; and auto-generated migrations from #[model(...)] definitions.Quickstart is here for anyone who wants to try it immediately: - Website: https://reinhardt-web.dev - Crates.io: https://crates.io/crates/reinhardt-webv0.1.0-rc.15 (https://github.com/kent8192/reinhardt-web/releases/tag/reinh...), BSD 3-Clause. Looking for feedback on the API designApr 2, 2026 2:07 PM
spacenews.com
Creating near-term lunar settlements: lessons from space historyhttps://spacenews.com/creating-near-term-lunar-settlements-lessons-from-space-history/March 16, 2026, was the 100th anniversary of Robert Goddard’s first flight of a liquid fueled rocket. It reached an altitude of 41 feet. 31 years later, in 1957, Sputnik began a lonely beep as the first satellite in orbit. In 1969, 12 years after Sputnik and 43 years after Goddard’s first flight, Neil Armstrong […] The post Creating near-term lunar settlements: lessons from space history appeared first on SpaceNews.Apr 1, 2026 1:00 PM
github.com
Show HN: Memv – Memory for AI Agentshttps://github.com/vstorm-co/memvmemv is an open-source Python library that gives AI agents persistent memory. Feed it conversations; it extracts knowledge.The extraction mechanism is predict-calibrate (Nemori paper): given existing knowledge, it predicts what a new conversation should contain, then extracts only what the prediction missed.v0.1.2 adds the production path: - PostgreSQL backend (pgvector for vectors, tsvector for text search, asyncpg pooling). Single db_url parameter — file path for SQLite, connection string for Postgres. - Embedding adapters: OpenAI, Voyage, Cohere, fastembed (local ONNX).Other things it does: - Bi-temporal validity: event time (when was the fact true) + transaction time (when did we learn it), following Graphiti's model. - Hybrid retrieval: vector similarity + BM25 merged with Reciprocal Rank Fusion. - Episode segmentation: groups messages before extraction. - Contradiction handling: new facts invalidate old ones, with full audit trail.Procedural memory (agents learning from past runsMar 30, 2026 5:09 PM
spacenews.com
The race to build orbital data centers is missing its biggest variable: powerhttps://spacenews.com/the-race-to-build-orbital-data-centers-is-missing-its-biggest-variable-power/Here’s the version of the orbital data center story you keep reading: Elon Musk says space will be the cheapest place to run AI within 36 months. LoneStar announces plans for a lunar data center. NVIDIA’s Vera Rubin Space-1 makes headlines. These are real announcements, and they all have one thing in common. Nobody talks about the source of electricity. While […] The post The race to build orbital data centers is missing its biggest variable: power appeared first on SpaceNews.Mar 30, 2026 1:00 PM
simfic.net
Show HN: SimFic – A multi-agent narrative simulation for interactive fictionhttps://simfic.netHello HN,I'd like to share a hobby project I'm working on called SimFic: a multi-agent interactive fiction simulation engine. Many of you like to read. But have you wanted to do more than just follow through someone's story? What if you could step into their shoes, and play it out yourself in a simulated environment?The problem: simply prompting an AI chatbot (e.g. ChatGPT) directly with a world/story-building prompt and expecting a rich, non-linear output is fundamentally flawed; in the real world, information asymmetry, Theory of Mind, non-determinism, etc. affect how people think and act. Asking a single LLM like ChatGPT to mentally simulate these constraints is flawed because of Transformer attention, as it is omniscient by technical design. Furthermore, LLMs are heavily tuned to be helpful and finish things early. If you've tried writing a book with an LLM, you know that the result is laughably short and shallow. If we use an LLM as-is, every action will succeed, every path will bMar 27, 2026 3:07 PM
nasa.gov
NASA to Unveil Complete Roman Telescope, Host Media Briefinghttps://www.nasa.gov/news-release/nasa-to-unveil-complete-roman-telescope-host-media-briefing/Media are invited Tuesday, April 21, to NASA’s Goddard Space Flight Center in Greenbelt, Maryland, for a look at the agency’s Nancy Grace Roman Space Telescope, which recently completed construction and is wrapping up prelaunch testing. This will be one of the last opportunities to view the fully integrated flagship telescope before it ships to […]Mar 26, 2026 8:18 PM
news.ycombinator.com
XReplicator – eBPF-based server backups that track only changed disk sectorshttps://news.ycombinator.com/item?id=47527328I've been in cloud/platform engineering for a decade. One thing that always frustrated me: every backup tool either relies on fragile kernel modules for change block tracking, or does full-disk scans even when 1% of data changed. So we built XReplicator. It uses eBPF tracepoints to track dirty sectors at the block device layer — no kernel modules, no hypervisor APIs, no cloud-specific hooks. The agent runs inside the VM and works on any platform. Kernel devs called me mad for using eBPF for disk data replication. But the numbers speak for themselves:Full backup: ~17 minutes Incremental after 1.4% change: ~2 minutes Incremental after 0.4% change: ~56 seconds 71x less data scanned vs full backup 65–72% storage savings (LZ4 + block-level dedup)No kernel module compilation per kernel version, no reboots, sandboxed execution via the eBPF verifier. Restore at file, partition, or full disk level from any point in the chain. Honest caveat: the eBPF path only works on Linux kernel 5.10+. For leMar 26, 2026 6:46 AM
apps.apple.com
Show HN: Visualizing Apple Health workout data (stats, trends, insights)https://apps.apple.com/us/app/streakout-workout-stats/id6758457318I've just launched this little iOS app as an alternative to Apple Fitness, which is cluttered and chaotic when it comes to visualizing basic workout stats and metrics.The idea is to focus on a clean, minimalistic design and only show high-level metrics that are actually useful, e.g. how often did I work out this week/month/year, cardio vs strength vs mobility, surf session count in February, etc.It's free and offline. Also, no signup, no ads, no data sharing, no social feeds, and no notifications.Just open it and get a quick glance at the state of your workout game within 2s.It's built in native Swift with liquid glass.Feedback is quite good so far, but it seems hard to get initial traction in the App Store, especially with all the AI slob these days. Would deeply appreciate some early downloads and honest reviews.Mar 24, 2026 3:56 PM
github.com
Show HN: Minimalist library to generate SVG views of scientific datahttps://github.com/alefore/mini_svg/Just wanted to share with HN a simple/minimal open source Python library that generates SVG files visualizing two dimensional data and distributions, in case others find it useful or interesting.I wrote it as a fun project, mostly because I found that the standard libraries in Python generated unnecessarily large SVG files. One nice property is that I can configure the visuals through CSS, which allows me to support dark/light mode browser settings. The graphs are specified as JSON files (the repository includes a few examples).It supports scatterplots, line plots, histograms, and box plots, and I collected examples here: https://github.com/alefore/mini_svg/blob/main/examples/READM...I did this mostly for the graphs in an article in my blog (https://alejo.ch/3jj).Would love to hear opinions. :-)Mar 23, 2026 5:54 PM
nasa.gov
NASA’s Hubble, Webb Telescopes Survey Pinwheel Galaxyhttps://www.nasa.gov/image-article/nasas-hubble-webb-telescopes-survey-pinwheel-galaxy/This March 16, 2026, image from NASA’s Hubble Space Telescope and the James Webb Space Telescope takes a closer look at the core of Messier 101, also known as the Pinwheel Galaxy. At 25 million light-years away, M101 is one of the closest “face-on” spiral galaxies to us. With that in mind, Hubble’s ultraviolet, visible, […]Mar 23, 2026 4:32 PM
aliveui.dev
Show HN: CSS primitives for product videos, no render pipelinehttps://www.aliveui.dev/video-blocksMost product demo videos are made in screen recorders or tools like Remotion that render frames to MP4. I wanted something different: drop a CSS class on any HTML element and get cinematic motion that's ready for a product video, entirely in the browser. AliveUI Video Blocks is a set of CSS utility classes for common video UI primitives: animated metric cards, toast notifications, typewriter text, kinetic typography, lower thirds, scene backgrounds (aurora, starfield, bokeh), device frames, 3D effects, and particle FX. The interesting technical bit: there's no render pipeline. Animations run as native CSS keyframes. A small runtime (~2KB) handles declarative scene sequencing via data attributes, restarts animations on scene activation via an offsetHeight reflow trick, and drives CSS transition classes between scenes. The tradeoff vs Remotion: you can't do frame-perfect programmatic video or export a standalone MP4 without a headless browser. What you get instead is instant playback, zeMar 23, 2026 10:57 AM
spacenews.com
Holistic space observation: the shift from SSA to SDAhttps://spacenews.com/holistic-space-observation-the-shift-from-ssa-to-sda/Recent reporting on SpaceX’s proposal to deploy up to one million satellites in low Earth orbit — paired with a vision of AI-enabled, autonomous orbital infrastructure — marks a decisive moment for the space community. Regardless of whether these numbers ultimately materialize, the direction is unmistakable: space is moving toward unprecedented scale, autonomy and strategic […] The post Holistic space observation: the shift from SSA to SDA appeared first on SpaceNews.Mar 20, 2026 1:00 PM
esa.int
Proba-3’s Coronagraph is alive!https://www.esa.int/Enabling_Support/Space_Engineering_Technology/Proba-3_s_Coronagraph_is_aliveA month after an anomaly onboard the Proba-3 mission caused ground control to lose contact with the Coronagraph spacecraft, the mission team shares great news: the spacecraft has phoned home, re-establishing the lost connection.Mar 19, 2026 2:00 PM
github.com
Show HN: PingCRM – Open-source personal networking CRMhttps://github.com/sneg55/pingcrmHey HN,Robin Dunbar figured the human brain caps out at roughly 150 stable relationships. After that, people just fall off. Not because you stop caring, but because you can't track that many threads at once. I built PingCRM to push past that limit, not by making you remember more, but by handling the part you're bad at: noticing who's going cold and drafting something worth sending.CRMs exist, but they're built for sales teams. I wanted something for one person maintaining their own network. Specifically:(1) Pull in conversations I'm already having. Gmail threads, Telegram DMs, Twitter DMs, LinkedIn messages, no manual logging.(2) Tell me who's going cold. A relationship score (0–10) based on recency, frequency, reciprocity, and breadth of interaction.(3) Draft the message for me. Claude reads your conversation history, picks the right tone (formal vs. casual), and writes a follow-up that references why now is a good time, like a job change, a long silence, or a fundraising announcemenMar 18, 2026 10:33 AM
helpmarq.com
Show HN: Helpmarq – Submit any project, get structured feedback from real usershttps://www.helpmarq.com/I built this after noticing a pattern: founders and developers share things they've built, get back vague or overly positive responses, and have no real signal on what to fix. Helpmarq lets you submit any project — landing page, app, side project, pitch deck — and get structured feedback from real users. The review process is guided by specific questions (clarity, value prop, UX, conversion blockers) so reviewers can't just say "looks good." The core insight: feedback quality is a framework problem, not a motivation problem. Most people want to give useful feedback — they just don't know what to look for. Still early. Would love brutal, honest feedback from this community — on the product and on the idea itself. helpmarq.comMar 17, 2026 8:45 PM
