2,437 results for free

nasa.gov
NASA-Supported Space Tech Advances Earthly Constructionhttps://www.nasa.gov/technology/tech-transfer-spinoffs/nasa-supported-space-tech-advances-earthly-construction/An innovative 3D printing process that advanced NASA’s approach to outfitting a lunar habitat is making buildings on Earth beautiful, efficient, and strong. Instead of building structures layer by layer, Branch Technology Inc. of Chattanooga, Tennessee, has developed a process the company calls Freeform 3D Printing, which creates shapes with lightweight lattice structures that can be filled or covered. The company uses the technique to manufacture […]
May 13, 2026 7:47 PM
mosaicqr.com
Show HN: MosaicQR – QR codes that double as pixel art of any simple imagehttps://mosaicqr.comI wanted to make a QR code for a separate business (a software company for MEP engineers) where the QR code itself looked like the logo. I found several tools online, but none that produced the result I was looking for.I made a tool that powers MosaicQR.com to achieve the balance of aesthetics and functional scanning that I wanted. This website generates QR codes where the module layout looks like the inputted image. The free version auto-fetches the favicon from any URL you enter.Curious what people think.
May 12, 2026 2:21 PM
science.nasa.gov
Hubble Survey Sets Up Roman’s Future Look Near Milky Way’s Centerhttps://science.nasa.gov/missions/roman-space-telescope/hubble-survey-sets-up-romans-future-look-near-milky-ways-center/The Milky Way’s galactic bulge, the bulbous region that surrounds the galactic center, contains a dense collection of stars, planets, and other free-floating objects. This region has been studied for decades with numerous ground-based and space-based telescopes, including NASA’s Hubble and James Webb space telescopes. Soon, NASA’s Nancy Grace Roman Space Telescope will be the […]
May 11, 2026 2:00 PM
nasa.gov
New NASA Technology Mimics Extreme Cold of the Lunar Nighthttps://www.nasa.gov/general/nasa-technology-mimics-extreme-lunar-night/As NASA looks to explore the Moon, Mars, and beyond, researchers must develop materials capable of withstanding the extreme temperatures found in space and on other planets and their moons. In frigid conditions, rubber can shatter like glass, circuit boards may fail, and electrical connections can freeze and fracture. Gaining a deeper understanding of how […]
May 6, 2026 2:00 PM
pulsepages.co
Show HN: PulsePages – Multi-page websites for $9/year (Carrd alternativehttps://www.pulsepages.coCarrd is good at one thing: one page. The moment you need a second page — a /pricing, an /about, a /blog — you're either hacking single-column scroll or jumping to Squarespace ($192/yr) or Wix ($192/yr+). Neither is proportionate for a portfolio, indie project, or small business that just needs a few pages.So I built PulsePages. Drag-drop block editor, unlimited pages, custom domains with auto-SSL, all for $9/year. Free tier covers unlimited single-page sites with no credit card.What's in it: - Block editor: text, images, video, embeds, contact forms - Custom domains + automatic SSL provisioning - AI writing assistant (drafts and rewrites page copy in context) - Version history: roll back any page to any saved state - Gated content: password-protect individual pages or sections - Free tier: unlimited single-page sites, no account required to tryStack: Next.js, Supabase, Stripe, Render, Resend.Live at pulsepages.co. Break things, leave feedback here or at pulsepages@polsia.app.
May 5, 2026 11:50 AM
chess-cheaters.vercel.app
Show HN: Vim and centaur chess inspired app, where you choose from top moveshttps://chess-cheaters.vercel.app/The chess app built with Next.js, Convex, and Clerk, where Stockfish (WebAssembly) runs entirely in the browser. Instead of playing freely, you're limited to the engine's top suggested moves — but their evaluations are hidden until you pick one. Human intuition guides the choice; the engine does the heavy lifting.revealed.You can select from two types of move selections 1-5 and jkml; vim style
May 2, 2026 6:29 PM
news.ycombinator.com
Show HN: Weekly Log, Old-school journaling social mediahttps://news.ycombinator.com/item?id=47843663Weekly Log is a minimalistic social media website designed for you to do journaling and creative writing.A lot of modern social media apps are set up in a way that addicts and detriments the users, meanwhile profiting off of their data. I really wanted to make a site that doesn't operate in that way.Some of its distinctions: - You can create one post per week. This encourages care and consideration. - Nobody knows who you follow or what posts you react to, besides you and the other user. These stats are personal, so people view your logs free of outside influence. - Posts are rich text-only, no images or videos, in an effort to reduce mental clutter. - Your feed only features users you follow, to give you increased control of what you see, unless you click the "global" checkbox to see all posts.quick demo: https://www.youtube.com/watch?v=7CTnORsGnL8 overview page: https://www.weekly-log.com/about/overview---I have soft-launched this website, and a handful of my friends have signed up a
Apr 21, 2026 2:02 AM
github.com
Show HN: Forkrun – NUMA-aware shell parallelizer (50×–400× faster than parallel)https://github.com/jkool702/forkrunforkrun is the culmination of a 10-year-long journey focused on "how to make shell parallelization fast". What started as a standard "fork jobs in a loop" has turned into a lock-free, CAS-retry-loop-free, SIMD-accelerated, self-tuning, NUMA aware shell-based stream parallelization engine that is (mostly) a drop-in replacement for xargs -P and GNU parallel.On my 14-core/28-thread i9-7940x, forkrun achieves:* 200,000+ batch dispatches/sec (vs ~500 for GNU Parallel)* ~95–99% CPU utilization across all 28 logical cores, even when the workload is non-existant (bash no-ops / `:`) (vs ~6% for GNU Parallel). These benchmarks are intentionally worst-case (near-zero work per task) because they measure the capability of the parallelization framework itself, not how much work an external tool can do.* Typically 50×–400× faster on real high-frequency low-latency workloads (vs GNU Parallel)A few of the techniques that make this possible:* Born-local NUMA: stdin is splice()'d into a shared memfd, the
Mar 27, 2026 12:12 PM
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
news.ycombinator.com
Show HN: Chat – Another open-source chat UI for MCP Serverhttps://news.ycombinator.com/item?id=47398628i built this because i’ve been experimenting with MCP and felt there was a need lightweight version for ecosystem.most existing clients felt a bit too noisy and bundled into larger ecosystems, so i wanted simplest/ near plain version that just focuses on end-user chat experience.stack(main): NextJS(App Router) + Vercel AI SDKcapabilities:+ set single MCP endpoint and brand mode(bring your own brand asset) on ENV+ prepare local db or external endpoint(SQLite, PostgreSQL, MySQL)+ choose in-memory(default) or external/ local Redis endpoint+ built-in auth via Better Auth & Resend(optional)+ support file upload with Cloudflare R2+ support location-sharing with LeafletJS and Browser Geolocation or Google Maps Platform+ automatic data cleanup with Trigger(free-tier trigger.dev is ENOUGH)+ auto-detect user location so they dont need to set timezone manually+ locale currently support 10 languages(EN, ID, KR, JP, ES, ZH, DE, NL, FR, IT)+ plain/minimalist interface+ install with single interactiv
Mar 16, 2026 1:17 PM
news.ycombinator.com
Looking for Partner to Build Agent Memory (Zig/Erlang)https://news.ycombinator.com/item?id=47356098I’m working on a purpose-built memory platform for autonomous AI agents.Right now, agent memory is stuck between two hohum options: RAG (which loses relational topology) and Graph Databases (which require massive pointer chasing and degrade under heavy recursive reasoning).I'm building an alternative using Vector Symbolic Architecture (Hyperdimensional Computing). By mathematically binding facts, sequences, and trees into fixed-size high-dimensional vectors (D=16,384), we can compress complex graph traversals into O(1) constant-time SIMD operations…and do some quasi brain-like stuff cheaply, that is, without GPUs and LLMs.The design is maturing nicely and strictly bifurcated to respect mechanical sympathy:• The Data Plane (Zig): Pure bare-metal math. 2GB memory-mapped NVMe tiles via io_uring. Facts are superposed into lock-free 8-bit accumulators strictly aligned to 64-byte cache lines. Queries are executed via AVX-512 popcount instructions to calculate Hamming distances at line-rate.
Mar 12, 2026 7:46 PM
github.com
Show HN: Open-source browser for AI agentshttps://github.com/theredsix/agent-browser-protocolHi HN, I forked chromium and built agent-browser-protocol (ABP) after noticing that most browser-agent failures aren’t really about the model misunderstanding the page. Instead, the problem is that the model is reasoning from a stale state.ABP is designed to keep the acting agent synchronized with the browser at every step. After each action (click, type, etc), it freezes JavaScript execution and rendering, then captures the resulting state. It also compiles the notable events that occurred during that action loop, such as navigation, file pickers, permission prompts, alerts, and downloads, and sends that along with a screenshot of the frozen page state back to the agent.The result is that browser interaction starts to feel more like a multimodal chat loop. The agent takes an action, gets back a fresh visual state and a structured summary of what happened, then decides what to do next from there. That fits much better with how LLMs already work.A few common browser-use failures ABP hel
Mar 11, 2026 2:39 PM
github.com
Show HN: PolyClaude – Using math to pay less for Claude Codehttps://github.com/ArmanJR/PolyClaudeHi HN!I built this tool specifically for Claude Code users who hit the 5-hour rate limit wall mid-flow. There's no official plan between Pro ($20/mo) and Max ($100/mo). it's a fixed gap with nothing in between.The workaround most people do manually: running multiple Pro accounts and switching when one is limited. This actually works, but naive rotation wastes a lot of capacity. When you activate an account turns out to matter as much as which one you use. A single throwaway prompt sent a few hours before your coding session can unlock an extra full cycle.PolyClaude automates this. You tell it your accounts, your typical coding hours, and how long you usually take to hit the limit. It uses combinatorial optimization to compute the exact pre-activation schedule, then installs cron jobs to fire those prompts automatically. When you sit down to work, your accounts are already aligned.It's free and open source. Install is one curl command, then an interactive setup wizard handles the rest.R
Mar 7, 2026 10:24 PM
pulsetech.news
Show HN: PulseTech.news – an automated, privacy-first tech aggregatorhttps://pulsetech.news/I built PulseTech.news because I was tired of "heavy" tech news sites. I wanted a lightning-fast, zero-bloat aggregator that I could check in 30 seconds to get the global pulse.Technical Highlights:* Performance: Built on a lean PHP/MySQL stack for sub-100ms page loads. No heavy frameworks, just vanilla performance. * Automation: A headless background scraper (bin/scrape.php) runs on an hourly cron cycle to digest, categorize, and deduplicate headlines from the world’s top tech sources. * Privacy-First: Implemented Google Consent Mode v2 and PII-free click tracking to be fully GDPR/CCPA compliant without compromising analytics. Semantic Web: Every listing is backed by dynamic JSON-LD ItemList schemas, making the site highly discoverable by search engines. * I’ve spent the last few days fine-tuning the automated categorization engine to ensure that "AI" news stays in AI, "Cybersecurity" stays in security, etc., based on a weighted keyword detection system.I'd love to hear your feedback
Mar 5, 2026 12:11 PM
moatradar.com
Show HN: MoatRadar – AI investment research through Warren Buffett's principleshttps://www.moatradar.com/?promo=HACKERNEWSHey HN,I’m a non-developer and this is the first app I’ve ever shipped in my life. I built it over the last few days using Claude and a lot of vibe coding.The idea came from my own investing workflow: I often look at companies through the lens of specific investors (Buffett, Lynch, Taleb, etc.). I wanted a tool that could generate investment ideas filtered through those frameworks.What the app does:You choose an investor (Buffett, Lynch, Soros, Damodaran, etc.) and an asset class (stocks, startups, crypto). The app then generates 10 opportunities and explains why that investor might find them interesting, based on their known principles.Under the hood: • Node.js server (no frameworks) • Vanilla JS frontend • GPT-4o for research / synthesis • live price data • Stripe + Google OAuth • hosted on RailwayIt’s still an experiment and I’m curious if the idea actually makes sense to other investors.You can try it here:https://www.moatradar.comHN users can get 10 free credits:https://www.moatra
Mar 4, 2026 11:25 PM
news.ycombinator.com
Show HN: DevIndex – Ranking 50k GitHub developers using a static JSON filehttps://news.ycombinator.com/item?id=47193729Hey HN,I’ve always been frustrated by the lack of an accurate ranking for top open-source contributors on GitHub. The available lists either cap out early or are highly localized, completely missing developers with tens or hundreds of thousands of contributions.So, I built DevIndex to rank the top 50,000 most active developers globally based on their lifetime contributions.From an engineering perspective, the constraint I imposed was: *No backend API.* I wanted to host this entirely on GitHub Pages for free, meaning the browser had to handle all 50,000 data-rich records directly.Here is how we made it work:1. *The Autonomous Data Factory (Backend):* Because GitHub's API has no "Lifetime Contributions" endpoint, we built a Node.js pipeline running on GitHub Actions. It uses a "Network Walker" spider to traverse the social graph (to break out of algorithmic filter bubbles) and an Updater that chunks GraphQL queries to prevent 502 timeouts. The pipeline continuously updates a single `user
Feb 28, 2026 11:13 AM
bing.com
Shiri Shapira’s Yiddish stories reflect the anxieties of millennialshttp://www.bing.com/news/apiclick.aspx?ref=FexRss&aid=&tid=6a89e566f12342b786efa350a7123247&url=https%3A%2F%2Fwww.msn.com%2Fen-us%2Fnews%2Fworld%2Fshiri-shapira-s-yiddish-stories-reflect-the-anxieties-of-millennials%2Far-AA1WYhC3&c=16792107186209155663&mkt=en-usThe Forward brings you independent, nonprofit journalism with trusted, nonpartisan news and analysis of the Middle East, campus conflicts, and more. Sign up for the free morning newsletter today. This ...
Feb 24, 2026 5:12 AM
bing.com
Shiri Shapira’s Yiddish stories reflect the anxieties of millennialshttp://www.bing.com/news/apiclick.aspx?ref=FexRss&aid=&tid=6a89d8b3034a4dafa8b248143dbed6f1&url=https%3A%2F%2Fwww.msn.com%2Fen-us%2Fnews%2Fworld%2Fshiri-shapira-s-yiddish-stories-reflect-the-anxieties-of-millennials%2Far-AA1WYhC3&c=16792107186209155663&mkt=en-usThe Forward brings you independent, nonprofit journalism with trusted, nonpartisan news and analysis of the Middle East, campus conflicts, and more. Sign up for the free morning newsletter today. This ...
Feb 24, 2026 5:12 AM
news.ycombinator.com
Haitless: Quit Addictionhttps://news.ycombinator.com/item?id=47128248Break bad habits and track your recovery.Break the cycle. Reclaim your freedom. Habitless is the science-backed tracker built specifically for the discipline of quitting. Whether it’s smoking, alcohol, vaping, or social media, Habitless provides the visual proof and psychological tools you need to stop addictions for good and stay sober. WHY HABITLESS? Most apps track new routines. Habitless tracks your freedom. By combining high-precision streak counting with real-time financial savings, we turn your recovery into a rewarding journey you can actually see.KEY FEATURES • Precision Streak Counter: Track your sobriety down to the second. See exactly how long you’ve been habit-free with our emerald-on-black interface. • Financial Savings Tracker: See the real-world impact. Input your daily spend on cigarettes or drinks and watch your total savings grow in real-time. • Milestone Journey & Badges: Unlock 20+ psychological badges as you progress from "24 Hours Clean" to "Long-term Freedom." •
Feb 23, 2026 8:23 PM
spacepolicyonline.com
Crew-12 Lifts Off on Eight-Month ISS Missionhttps://spacepolicyonline.com/news/crew-12-lifts-off-on-eight-month-iss-mission/Crew-12 headed to the International Space Station this morning aboard their SpaceX Crew Dragon Freedom. When they arrive tomorrow, the ISS will be restored to its normal crew complement of […]
Feb 13, 2026 12:18 PM