The best Hacker News stories from Show from the past day
Latest posts:
Show HN: ctx – an Agentic Development Environment (ADE)
Show HN: Travel Hacking Toolkit – Points search and trip planning with AI
I use points and miles for most of my travel. Every booking comes down to the same decision: use points or pay cash? To answer that, you need award availability across multiple programs, cash prices, your current balances, transfer partner ratios, and the math to compare them. I got tired of doing it manually across a dozen tabs.<p>This toolkit teaches Claude Code and OpenCode how to do it. 7 skills (markdown files with API docs and curl examples) and 6 MCP servers (real-time tools the AI calls directly).<p>It searches award flights across 25+ mileage programs (Seats.aero), compares cash prices (Google Flights, Skiplagged, Kiwi.com, Duffel), pulls your loyalty balances (AwardWallet), searches hotels (Trivago, LiteAPI, Airbnb, Booking.com), finds ferry routes across 33 countries, and looks up weird hidden gems near your destination (Atlas Obscura).<p>Reference data is included: transfer partner ratios for Chase UR, Amex MR, Bilt, Capital One, and Citi TY. Point valuations sourced from TPG, Upgraded Points, OMAAT, and View From The Wing. Alliance membership, sweet spot redemptions, booking windows, hotel chain brand lookups.<p>5 of the 6 MCP servers need zero API keys. Clone, run setup.sh, start
searching.<p>Skills are, as usual, plain markdown. They work in OpenCode and Claude Code automatically (I added a tiny setup script), and they'll work in anything else that supports skills.<p>PRs welcome! Help me expand the toolkit! :)<p><a href="https://github.com/borski/travel-hacking-toolkit" rel="nofollow">https://github.com/borski/travel-hacking-toolkit</a>
Show HN: TinyOS – A minimalist RTOS for Cortex-M written in C
Show HN: TurboQuant-WASM – Google's vector quantization in the browser
Show HN: sllm – Split a GPU node with other developers, unlimited tokens
Running DeepSeek V3 (685B) requires 8×H100 GPUs which is about $14k/month. Most developers only need 15-25 tok/s. sllm lets you join a cohort of developers sharing a dedicated node. You reserve a spot with your card, and nobody is charged until the cohort fills. Prices start at $5/mo for smaller models.<p>The LLMs are completely private (we don't log any traffic).<p>The API is OpenAI-compatible (we run vLLM), so you just swap the base URL. Currently offering a few models.
Show HN: A game where you build a GPU
Thought the resources for GPU arch were lacking, so here we are
Show HN: TurboQuant for vector search – 2-4 bit compression
Show HN: Home Maker: Declare Your Dev Tools in a Makefile
A developer's machine accumulates tools fast. A Rust CLI you compiled last year, a Python formatter installed via `uv`, a language server pulled from npm, a terminal emulator from a curl script, a Go binary built from source. Each came from a different package manager, each with its own install incantation you half-remember.<p>I wanted a way to declare what I need without adopting a complex system like Nix or Ansible just for a single laptop. The result was a plain old Makefile.<p>I wrote a short post on using Make (along with a tiny bash script and fzf) to create a searchable, single-command registry for all your local dev tools. It’s not a new framework or a heavy tool—just a simple way to organize the package managers we already use.<p>If you're tired of losing track of your local environment, you might find it useful.
Show HN: Made a little Artemis II tracker
Made a little Artemis II tracker for anyone else who is unnecessarily invested in this mission:<p><a href="https://artemis-ii-tracker.com/" rel="nofollow">https://artemis-ii-tracker.com/</a><p>For those of us who apparently need a dedicated place to monitor this mission instead of behaving like well-adjusted people.
Show HN: Made a little Artemis II tracker
Made a little Artemis II tracker for anyone else who is unnecessarily invested in this mission:<p><a href="https://artemis-ii-tracker.com/" rel="nofollow">https://artemis-ii-tracker.com/</a><p>For those of us who apparently need a dedicated place to monitor this mission instead of behaving like well-adjusted people.
European alternatives to Google, Apple, Dropbox and 120 US apps
Show HN: Apfel – The free AI already on your Mac
Github: <a href="https://github.com/Arthur-Ficial/apfel" rel="nofollow">https://github.com/Arthur-Ficial/apfel</a>
Show HN: Apfel – The free AI already on your Mac
Github: <a href="https://github.com/Arthur-Ficial/apfel" rel="nofollow">https://github.com/Arthur-Ficial/apfel</a>
Show HN: I built a frontpage for personal blogs
With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories.<p>There are two versions:
Minimal (HN-inspired, fast, static): <a href="https://text.blogosphere.app/" rel="nofollow">https://text.blogosphere.app/</a>
Non-minimal: <a href="https://blogosphere.app/" rel="nofollow">https://blogosphere.app/</a><p>If you don't find your blog (or your favorite ones), please add them. I will review and approve it.
Show HN: I built a frontpage for personal blogs
With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories.<p>There are two versions:
Minimal (HN-inspired, fast, static): <a href="https://text.blogosphere.app/" rel="nofollow">https://text.blogosphere.app/</a>
Non-minimal: <a href="https://blogosphere.app/" rel="nofollow">https://blogosphere.app/</a><p>If you don't find your blog (or your favorite ones), please add them. I will review and approve it.
Show HN: NASA Artemis II Mission Timeline Tracker
Show HN: Flight-Viz – 10K flights on a 3D globe in 3.5MB of Rust+WASM
I built a real-time flight tracker that renders 10,000+ aircraft on an interactive 3D globe, entirely in the browser using Rust compiled to WebAssembly.
Show HN: I built a DNS resolver from scratch in Rust – no DNS libraries
I built a DNS resolver that lets me use <a href="https://frontend.numa" rel="nofollow">https://frontend.numa</a> instead of localhost:5173
— auto-generated TLS certs, WebSocket passthrough, path routing. No mkcert, no nginx, no /etc/hosts.
Show HN: I built a DNS resolver from scratch in Rust – no DNS libraries
I built a DNS resolver that lets me use <a href="https://frontend.numa" rel="nofollow">https://frontend.numa</a> instead of localhost:5173
— auto-generated TLS certs, WebSocket passthrough, path routing. No mkcert, no nginx, no /etc/hosts.
Show HN: Dull – Instagram Without Reels, YouTube Without Shorts (iOS)
I kept deleting and redownloading Instagram because I couldn't stop watching Reels but needed the app for DMs. Tried screen time limits, just overrode them. So I built this.<p>Dull loads Instagram, YouTube, Facebook, and X and filters out short-form content with a mix of CSS and JS injection. MutationObserver handles anything that lazy-loads after the page renders, which is most of the annoying stuff since these platforms love to load content dynamically.<p>The ongoing work is maintaining the filters. Platforms change their DOM all the time, Instagram obfuscates class names, YouTube restructures how Shorts appear in the feed, etc. It's a cat-and-mouse thing that never really ends.<p>Also has grayscale mode, time limits, and usage tracking.<p>Happy to answer questions.