Show HN: Jumpjet – a WASM runtime for game developers https://ift.tt/IfVpon2

Show HN: Jumpjet – a WASM runtime for game developers I built Jumpjet because I realized that engine and indie game developers are always repeating the same work: building the core infrastructure that touches the OS. Webassembly solves this in the Component Model by enabling interop between packages written in different languages. And in my opinion it's sort of the perfect fit for Jumpjet's model: providing a chassis without an engine. Jumpjet works by defining a very close mapping of WebGPU (and a few other WebIDL features) to WIT so that they can be used in any language that can target the wasm Component Model. Your game then runs as a guest application in Jumpjet's host runtime (powered by wasmtime), which shrinks final bundle size considerably versus something like Electron. Right now a bare bones game in Jumpjet is about 40mb. Right now the project is in an alpha or possibly pre-alpha state, it's not production ready. On the commercial side, I think there's an opportunity for cloud storage, game server hosting, a package manager and/or marketplace, distribution, and more. Right now you can target macOS, Windows, Linux, Android and iOS. (I haven't done any real testing on mobile so good luck.) The languages you can use will depend on their support for generating bindings from .wit files. There are a few templates available, I recommend one of the Rust ones. If you are a game developer or just like tinkering, I'd love for you to try the project out and tell me what you think! https://jumpjet.dev June 19, 2026 at 11:52PM

Show HN: Continuous Nvidia CUDA PC Sampling Profiler https://ift.tt/zyOb5ft

Show HN: Continuous Nvidia CUDA PC Sampling Profiler Blog post about how we extended our open source profiler to include support for continuous production PC sampling. https://ift.tt/A3NLoyY June 15, 2026 at 07:49PM

Show HN: I built with Claude Code a bookmarks manager with a social cut https://ift.tt/uckSVmF

Show HN: I built with Claude Code a bookmarks manager with a social cut Hi, I am Paolo from Italy. I have spent the last few months designing, developing and testing (my actual job is in the QA domain) a bookmarks manager platform with some help from Claude Code. The idea is to allow users to network with people with similar interests, sharing bookmarks and interesting links, libraries. The tool is free and you can try it out just entering with the guest user (no need to login or register). The guest user is created with demo bookmarks and libraries so you can look at the features. Please if you have some feedback or find this project of any interest, let me know! Ciao :) https://ift.tt/QfrJa6A June 19, 2026 at 11:37PM

Show HN: I built a daily flag quiz in honor of the World Cup https://ift.tt/vxJC3A6

Show HN: I built a daily flag quiz in honor of the World Cup https://orbisearth.web.app/ June 19, 2026 at 12:15AM

Show HN: Run Agent Skills with mistral.rs v0.8.10: /v1/skills support and more https://ift.tt/ukGMWpU

Show HN: Run Agent Skills with mistral.rs v0.8.10: /v1/skills support and more Hey all! I'm the maintainer of mistral.rs. I just landed support for OpenAI-compatible Agent Skills via a /v1/skills endpoint, and it works with local open models. Until now Skills have basically been locked to closed models, and with the ability to have private, local intelligence becoming increasingly important, but this feature allows you to do XYZ with local models. It's fully compatible with OpenAI's /v1/skills API, so you can drop mistral.rs into your existing code with minimal difficulty. We support the accompanying tools too: /v1/files or input_file for attaching files to your prompts, and mistral.rs also allows models to send generated files back using the OpenAI-compatible method. It's also easier than ever to try mistral.rs: we are including prebuilt binaries for NVIDIA CUDA, Apple Silicon, and CPU! # Linux/Mac > curl --proto '=https' --tlsv1.2 -sSf https://ift.tt/LiT93Zg... | sh # Windows > irm https://ift.tt/LiT93Zg... | iex Then: mistralrs serve --agent --isq 4 -m google/gemma-4-E4B-it Super excited for you to try this out and any feedback! Do you have any suggestions for what you would like to see in the next releases? Check out the GitHub: https://ift.tt/moV2M7B Docs & Quickstart: https://ericlbuehler.github.io/mistral.rs/ June 18, 2026 at 11:03AM

Show HN: Chatty Lingo – A language practicing app https://ift.tt/oXJj0hk

Show HN: Chatty Lingo – A language practicing app Hey all, I've built a web app for practicing spoken conversations in a language you're learning. It was driven by my own needs when I learn Korean. The main functionality includes two modes: 1. Chat with AI — you pick a situation (ordering at a café, taking a taxi, checking into a hotel) and the AI plays the other role entirely in your target language. It stays in character, adapts to what you say, and you can fail as many times as you want with nobody watching. 2. Chat with Human — for real, in-person conversations with native speakers (think traveling abroad and talking to a local). It translates the conversation in real time so both sides can actually communicate, and saves the full transcript so you can review it afterward and learn from what was said. I'm a solo dev. The web app is live today and mobile is still being built. The app is still at early stage, I'm adding more features to it. I'd love some feedbacks, especially on what features you think are missing and what you would expect from a language learning app. Here is a demo page where you can play with it without signing up: https://ift.tt/wrhXpea https://ift.tt/8SkdzUv June 18, 2026 at 02:01AM

Show HN: I built a spelling app for kids with my 7-year-old https://ift.tt/kWDZdRB

Show HN: I built a spelling app for kids with my 7-year-old Hello HN! I made an iPad app with my seven-year-old daughter to make learning spelling fun. https://spellabee.com/ We play Spelling Bee type games in our car rides, and she wanted to learn more words that way. So we built a simple app that teaches 10 words at a time, and lets the kids practice and master these 10 words. The full word list in the app is static, and it gets progressively harder as the kid goes through the levels. There are no AI features in the app. I do not collect emails inside the app or have third party trackers. Based on feedback (reviews) and aggregate usage data I plan on updating the app with new word sets. Although the app does not have any AI features I used AI to build the app itself. I used Claude to code the app using Flutter, do etymology research, and understand what alternative apps that are in the App Store. While the LLMs were good at providing a lot of information, I had to synthesize it and play a strong Product Manager role to drive the vision and keep the app simple. My daughter provided a lot of feedback and helped simplify the app and refine the UX. The "Bee Stage" design was inspired by her drawing. Without AI tools, it would have been almost impossible for me to build and launch this app. But it still required a lot of decision-making and prioritization to get the product out of the door. I strongly believe that while AI is a powerful tool, human taste is the differentiator in well made products. If you have a kid in K-5 who is interested in spelling bee type games, give it a try and I would love to hear any feedback you may have as a parent. App store: https://ift.tt/bFTSJyt... https://spellabee.com/ June 18, 2026 at 01:36AM