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Show HN: A luma dependent chroma compression algorithm (image compression)

https://www.bitsnbites.eu/a-spatial-domain-variable-block-size-luma-dependent-chroma-compression-...
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Show HN: I saw this cool navigation reveal, so I made a simple HTML+CSS version

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34•momciloo•4h ago•5 comments

Show HN: Kappal – CLI to Run Docker Compose YML on Kubernetes for Local Dev

https://github.com/sandys/kappal
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Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

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291•isitcontent•1d ago•38 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
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Show HN: PalettePoint – AI color palette generator from text or images

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Show HN: I spent 4 years building a UI design tool with only the features I use

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372•vecti•1d ago•170 comments

Show HN: Smooth CLI – Token-efficient browser for AI agents

https://docs.smooth.sh/cli/overview
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Show HN: R3forth, a ColorForth-inspired language with a tiny VM

https://github.com/phreda4/r3
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Show HN: I built a <400ms latency voice agent that runs on a 4gb vram GTX 1650"

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Show HN: Stacky – certain block game clone

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3•Keyframe•4h ago•0 comments

Show HN: A toy compiler I built in high school (runs in browser)

https://vire-lang.web.app
3•xeouz•5h ago•1 comments

Show HN: Artifact Keeper – Open-Source Artifactory/Nexus Alternative in Rust

https://github.com/artifact-keeper
155•bsgeraci•1d ago•64 comments

Show HN: BioTradingArena – Benchmark for LLMs to predict biotech stock movements

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Show HN: Slack CLI for Agents

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54•nwparker•2d ago•12 comments

Show HN: Nginx-defender – realtime abuse blocking for Nginx

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Show HN: ARM64 Android Dev Kit

https://github.com/denuoweb/ARM64-ADK
18•denuoweb•2d ago•2 comments

Show HN: Gigacode – Use OpenCode's UI with Claude Code/Codex/Amp

https://github.com/rivet-dev/sandbox-agent/tree/main/gigacode
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Show HN: MCP App to play backgammon with your LLM

https://github.com/sam-mfb/backgammon-mcp
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Show HN: Micropolis/SimCity Clone in Emacs Lisp

https://github.com/vkazanov/elcity
173•vkazanov•2d ago•49 comments

Show HN: I'm 75, building an OSS Virtual Protest Protocol for digital activism

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Show HN: I built Divvy to split restaurant bills from a photo

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3•pieterdy•10h ago•1 comments

Show HN: Horizons – OSS agent execution engine

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Show HN: Daily-updated database of malicious browser extensions

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14•toborrm9•1d ago•8 comments

Show HN: Slop News – HN front page now, but it's all slop

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Show HN: Falcon's Eye (isometric NetHack) running in the browser via WebAssembly

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Show HN: I Hacked My Family's Meal Planning with an App

https://mealjar.app
2•melvinzammit•12h ago•0 comments

Show HN: Which chef knife steels are good? Data from 540 Reddit tread

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Show HN: I built a free UCP checker – see if AI agents can find your store

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Show HN: Local task classifier and dispatcher on RTX 3080

https://github.com/resilientworkflowsentinel/resilient-workflow-sentinel
25•Shubham_Amb•1d ago•2 comments
Open in hackernews

Show HN: Open Computer-Animated Multivariable Calculus Course in 6 Languages

https://calculus.academa.ai/
5•sinaatalay•1w ago
We just released a fully computer-animated multivariable calculus course in six languages: English, Spanish, German, French, Italian, and Portuguese. Free and open to everyone. Half the course is live now; the rest is coming very soon.

We're an early-stage edtech startup. Our goal: use AI to build high-quality, computer-animated versions of every STEM course in the world, in every language, and bring them together on a platform like Coursera, but built for the AI age, with deep LLM integration. We want that literally. Every course. Every language.

This project simply couldn't exist without generative AI. We're two co-founders, and we don't speak five of the languages we just published in. There may be mistakes, but these courses wouldn't exist in those languages otherwise.

We produce lectures fast with AI. But once a lecture is done, adding another language is even faster, it's O(1). So we just made this in six languages. We could keep going.

These videos aren't static MP4s, they're open for improvement. If you have ideas, suggestions, or find mistakes, please open an issue on GitHub: https://github.com/academa-dev/multivariable-calculus

Would love your feedback. Happy to answer questions.

Join the waitlist for upcoming courses at https://academa.ai.

Tech stack: We forked 3Blue1Brown's Manim, synced TTS with animations using OpenAI Whisper, and used Inworld AI for text-to-speech.

Comments

tariqshams•1w ago
Very interesting, how do you validate the correctness of the generated visuals? And that a previous lesson, say 5 videos ago ensures that the concept being explained now had its prerequisite covered?

I assume you could do a topological sorting of the content to ensure prerequisites are covered, but I'm curious on how automated this could be.

Looks super cool either way!

sinaatalay•1w ago
Thank you!

We actually made the course ourselves, following James Stewart's Calculus and our own approach to teaching these topics (we're two PhD students). We wrote everything in English first, then translated it into other languages.

AI accelerated our workflow, we prompted the visuals and explanations we wanted, then polished the results ourselves. So we're confident in the teaching quality and correctness of these videos, they're not pure AI artifacts :)

tariqshams•1w ago
That’s a great workflow, any plans for covering more advanced math topics in the near future?
sinaatalay•1w ago
We want to nail the fundamentals first: Single-variable Calculus, Linear Algebra, Differential Equations, Physics, Machine Learning etc. These are the courses with the largest audiences, and we need that reach to sustain this project. But if you think focusing on advanced topics instead would make more sense, I'd love to hear your perspective!