Show HN: Rip.so – a graveyard for dead internet things

Hi HN, I&#x27;m Hugo. I&#x27;ve been building Rocky over the past month, shipping fast in the open. The binary is on GitHub Releases, `dagster-rocky` on PyPI, and the VS Code extension on the Marketplace. I held off on a broader announcement until the trust-system surface was coherent enough to talk about as one thing. The governance waveplan — column classification, per-env masking, 8-field audit trail on every run, `rocky compliance` rollup, role-graph reconciliation, retention policies — landed end-to-end last week in engine-v1.16.0 and rounded out in v1.17.4 (tagged 2026-04-26). That&#x27;s the milestone I&#x27;d been waiting for.The pitch: keep Databricks or Snowflake. Bring Rocky for the DAG. Rocky is a Rust-based control plane for warehouse pipelines. Storage and compute stay with your warehouse. Rocky owns the graph — dependencies, compile-time types, drift, incremental logic, cost, lineage, governance. The things your current stack can&#x27;t give you because it doesn&#x27;t own the DAG.A few things I think are interesting:- Branches + replay. `rocky branch create stg` gives you a logical copy of a pipeline&#x27;s tables (schema-prefix today; native Delta SHALLOW CLONE and Snowflake zero-copy are next). `rocky replay &lt;run_id&gt;` reconstructs which SQL ran against which inputs. Git-grade workflow on a warehouse.- Column-level lineage from the compiler, not a post-hoc graph crawl. The type checker traces columns through joins, CTEs, and windows. VS Code surfaces it inline via LSP.- Governance as a first-class surface. Column classification tags plus per-env masking policies, applied to the warehouse via Unity Catalog (Databricks) or masking policies (Snowflake). 8-field audit trail on every run. `rocky compliance` rollup that CI can gate on. Role-graph reconciliation via SCIM + per-catalog GRANT. Retention policies with a warehouse-side drift probe.- Cost attribution. Every run produces per-model cost (bytes, duration). `[budget]` blocks in `rocky.toml`; breaches fire a `budget_breach` hook event.- Compile-time portability + blast radius. Dialect-divergence lint across Databricks &#x2F; Snowflake &#x2F; BigQuery &#x2F; DuckDB (12 constructs). `SELECT *` downstream-impact lint.- Schema-grounded AI. Generated SQL goes through the compiler — AI suggestions type-check before they can land.What Rocky isn&#x27;t:- Not a warehouse — it&#x27;s the control plane on top.- Not a Fivetran replacement. `rocky load` handles files (CSV&#x2F;Parquet&#x2F;JSONL); for SaaS sources use Fivetran, Airbyte, or warehouse-native CDC.- Not dbt Cloud — no hosted UI, no managed scheduler. First-class Dagster integration if you need orchestration.Adapters: Databricks (GA), Snowflake (Beta), BigQuery (Beta), DuckDB (local dev &#x2F; playground). Apache 2.0.I&#x27;d love feedback on the trust-system framing, the governance surface (particularly classification-to-masking resolution in `rocky compile` and the `rocky compliance` CI gate), the branches&#x2F;replay design, the cost-attribution primitives, or anything else that catches your eye. Happy to go deep in the thread.

Show HN: Rocky – Rust SQL engine with branches, replay, column lineage

Show HN: Auto-Architecture: Karpathy's Loop, pointed at a CPU

Hi HN, Francesco from Cua here.
I hacked this project together last weekend, inspired by the Codex Computer-Use release and lessons learned from deploying GUI-operating agents for our customers.The main problem: when a UI automation process controls a desktop app today, it usually takes over the human’s session. Your cursor moves, keyboard focus gets stolen, windows jump to the front, and you have to stop working until the agent is done. That is why we have historically avoided encouraging users to run these processes directly on their host machine, instead relying on VMs or GUI containers for concurrency and background execution.But computer-use - the tools we give agents to operate computers like humans - does not scale cleanly that way. As models get smarter, agents need to share hosts safely, run in the background, and avoid collisions with the human or other agents using the same machine.We realized macOS has no first-class API for &quot;drive this app without touching the cursor&quot;. CGEventPost routes through the hardware input stream, so it moves your cursor. CGEvent.postToPid avoids the cursor warp, but Chromium treats those events as untrusted and silently drops clicks at the renderer boundary. Activating the target app first raises the window and pulls focus, defeating the point of background execution.Cua Driver is our attempt at a real fix: a background computer-use driver for macOS that lets an agent click, type, scroll, and read native apps while your cursor, frontmost app, and Space stay where they are. The default interface is a CLI, so it is easy to script or call from any coding agent shell.Try it on macOS 14+:&#x2F;bin&#x2F;bash -c &quot;$(curl -fsSL <a href="https:&#x2F;&#x2F;raw.githubusercontent.com&#x2F;trycua&#x2F;cua&#x2F;main&#x2F;libs&#x2F;cua-driver&#x2F;scripts&#x2F;install.sh" rel="nofollow">https:&#x2F;&#x2F;raw.githubusercontent.com&#x2F;trycua&#x2F;cua&#x2F;main&#x2F;libs&#x2F;cua-d...</a>)&quot;The first internal use case was delegated demo recording. We ask Claude Code to drive an app while &#x27;cua-driver recording start&#x27; captures the trajectory, screenshots, actions, and click markers. The result is an agent-generated product demo, Screen Studio inspired.Other things we have used it for:- Replacing Vercel’s agent-browser and other browser-use CLIs. With Claude Code and Cua Driver, you do not need Chrome DevTools Protocol at all.- A dev-loop QA agent that reproduces a visual bug, edits code, rebuilds, and verifies the UI while my editor stays frontmost.- Personal-assistant flows that use iMessage from Claude Code, Hermes, or other general-purpose agent CLIs.- Pulling visual context from Chrome, Figma, Preview, or YouTube windows I am not looking at, without relying on their APIs.What made this harder than expected:- CGEventPost warps the cursor because it goes through the HID stream.- CGEvent.postToPid does not warp the cursor, but Chromium drops it at the renderer IPC boundary.- Activating the target first raises the window and can drag you across Spaces.- Electron apps stop keeping useful AX trees alive when windows are occluded without a private remote-aware SPI.The unlock was SkyLight. SLEventPostToPid is a sibling of the public per-PID call, but it travels through a WindowServer channel Chromium accepts as trusted. Pair it with yabai’s focus-without-raise pattern, plus an off-screen primer click at (-1, -1), and the click lands without the window ever raising.One thing we learned: the right addressing mode depends on the app. Native macOS apps usually have rich AX trees, Chromium-family apps often need a hybrid of AX and screenshots, and apps like Blender or CAD tools may expose almost no useful AX surface. The mistake is defaulting to pixels everywhere - or defaulting to AX everywhere.Long technical writeup: <a href="https:&#x2F;&#x2F;github.com&#x2F;trycua&#x2F;cua&#x2F;blob&#x2F;main&#x2F;blog&#x2F;inside-macos-window-internals.md" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;trycua&#x2F;cua&#x2F;blob&#x2F;main&#x2F;blog&#x2F;inside-macos-wi...</a>I would like feedback from people building Mac automation, agent harnesses, or accessibility tooling. If it breaks on an macOS app you care about, that is useful data for us.

Show HN: Drive any macOS app in the background without stealing the cursor

Show HN: Live Sun and Moon Dashboard with NASA Footage

Show HN: I built a Chinese learning app that teaches through sentence patterns

Show HN: TiGrIS, a tiling compiler that fits ML models onto embedded devices

Scored 65.2% vs google&#x27;s official 47.8%, and the existing top closed source model Junie CLI&#x27;s 64.3%.Since there are a lot of reports of deliberate cheating on TerminalBench 2.0 lately (<a href="https:&#x2F;&#x2F;debugml.github.io&#x2F;cheating-agents&#x2F;" rel="nofollow">https:&#x2F;&#x2F;debugml.github.io&#x2F;cheating-agents&#x2F;</a>), I would like to also clarify a few things1. Absolutely no {agents&#x2F;skills}.md files were inserted at any point. No cheating mechanisms whatsoever2. The cli agent was run in leaderboard compliant way (no modification of resources or timeouts)3. The full terminal bench run was done using the fully open source version of the agent, no difference between what is on github and what was run.I was originally going to wait for it to land on the leaderboard, but it has been 8 days and the maintainers do not respond unfortunately (there is a large backlog of the pull requests on their HF) so I decided to post anyways.HF PR: <a href="https:&#x2F;&#x2F;huggingface.co&#x2F;datasets&#x2F;harborframework&#x2F;terminal-bench-2-leaderboard&#x2F;discussions&#x2F;145" rel="nofollow">https:&#x2F;&#x2F;huggingface.co&#x2F;datasets&#x2F;harborframework&#x2F;terminal-ben...</a>It is astounding how much the harness matters, based on this and other experiments I have done.

Show HN: OSS Agent I built topped the TerminalBench on Gemini-3-flash-preview

The standard GPU utilization metric reported by nvidia-smi, nvtop, Weights &amp; Biases, Amazon CloudWatch, Google Cloud Monitoring, and Azure Monitor is highly misleading. It reports the fraction of time that any kernel is running on the GPU, which means a GPU can report 100% utilization even if only a small portion of its compute capacity is actually being used. In practice, we&#x27;ve seen workloads with ~1–10% real compute throughput while dashboards show 100%.This becomes a problem when teams rely on that metric for capacity planning or optimization decisions, it can make underutilized systems look saturated.We&#x27;re releasing an open-source (Apache 2.0) tool, Utilyze, to measure GPU utilization differently. It samples hardware performance counters and reports compute and memory throughput relative to the hardware&#x27;s theoretical limits. It also estimates an attainable utilization ceiling for a given workload.GitHub link: <a href="https:&#x2F;&#x2F;github.com&#x2F;systalyze&#x2F;utilyze" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;systalyze&#x2F;utilyze</a>We&#x27;d love to hear your thoughts!

Show HN: Utilyze – an open source GPU monitoring tool more accurate than nvtop

While speccing out this spreadsheet tool, I realized that I never had to think about the keybindings. It all just came naturally from Vim. Normal&#x2F;insert&#x2F;visual modes, hjkl navigation, dd&#x2F;yy&#x2F;p, :w, :q. The usual muscle memory works.It supports CSV&#x2F;TSV import and export, and a native .cell format that preserves formulas. The formula engine handles SUM, AVERAGE, COUNT, MIN, MAX, and IF with range references.The codebase is a Cargo workspace: a pure cell-sheet-core library (no TUI dependency) and a cell-sheet-tui crate on top of ratatui. Early days, but it&#x27;s usable.To try it out:
cargo install cell-sheet-tuiFeedback of any kind is greatly appreciated!

Show HN: A terminal spreadsheet editor with Vim keybindings

I built that initially for an AI chat bot that allows teams to perform DevOps tasks straight out of Slack&#x2F;Teams (with proper permission control, obviously).Useful to let developers perform mundane tasks, or help coordinate incident response.I ended up using it myself on my own machine to manage Hetzner and AWS boxes. I thought that may be useful to others.The default policy should be good enough, but if you don&#x27;t like living dangerously, you can set it to `paranoid`.Install: `pi install npm:pi-hosts`GitHub: <a href="https:&#x2F;&#x2F;github.com&#x2F;hunvreus&#x2F;pi-hosts" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;hunvreus&#x2F;pi-hosts</a>

Show HN: Pi-hosts – Give the Pi coding agent access to your servers

I&#x27;ve been working on GeoTraceroute for a while and just shipped v2.3 
with submarine cable inference.A few things that might interest HN:- 320 community-contributed nodes across 50 countries, all volunteer-run
- Three views: 3D globe with day&#x2F;night rendering, 2D map, and a 
 topological mode that infers submarine cable routing
- The submarine cable inference is the part I find most interesting.
 Since cable routers don&#x27;t respond to ICMP, the underwater segments 
 are invisible to standard traceroute. The tool detects ocean crossings 
 by geolocation delta between consecutive hops, then infers the likely 
 cable using a geo graph of landing points with A* pathfinding.
 I have no way to validate this — if anyone has ideas, I&#x27;d love to discuss.Coverage is good in EU and US but thin in Asia, Africa and South America.
If you want to contribute a node: <a href="https:&#x2F;&#x2F;geotraceroute.com&#x2F;join" rel="nofollow">https:&#x2F;&#x2F;geotraceroute.com&#x2F;join</a>Salim

Show HN: GeoTraceroute – Traceroutes on a 3D globe and submarine cables

Show HN: I wrote a DOOM clone in my own programming language

Beads tables (Steve Yegge&#x27;s) for issue tracking. Can view git trees, terminals, issue tables, notes, and files all on one screen. Can connect multiple machines via private network (like tailscale)

Show HN: 49Agents – 2D Canvas IDE for Orchestrating Agents, Repos, Issues

Give your user a game while they wait for the LLM to return a result.

Show HN: Waiting for LLMs Suck – Give your user a game

Show HN: I built another to do list. But it does a lot

Show HN: ClusterdOS – Kubernetes without the platform team

Have you ever heard of Cafe keyboard from Samsung’s app store? It’s very similar to it, but here there are effects that… Make you feel like your phone is on steroids, and in a good way.Effected Keyboard 2 feels convenient when you press the keys with its gentle feedback (if you disabled heavy animations), it feels more mature and natural with its look and feel, has multiple languages, easy gestures that trigger useful features: if you swipe left from spacebar you have two different layouts of symbols, on swipe right from spacebar you change language and on swipe up from spacebar you get a mini popup keyboard where you can find undo&#x2F;redo, select text and copy&#x2F;paste with a clipboard. Sounds familiar?Effected Keyboard 2 is based on Anysoftkeyboard and has been developed on top of it since 2013(!) It has some paid features, even though to be honest I really tried to not be greedy with them. There are 3 packs, $5 each - basic one with themes and simple effects as you type, flying letters one - which pops flying letters from the keyboard to the app itself and the immersive effects which blow the minds of your friends when you show it them.Effected Keyboard 2 is an app for Android, even though with its tiny touches such as the round corners (which are everywhere) it reminds me an Apple product.Comparing to Anysoftkeyboard, Effected Keyboard 2 has a new set of Emoji which look more stylish. It has additional themes. And its function keys are more of Gboard styles, with an option to wider spacebar or a bit shorter one in favor of additional punctuation keys in the button row.Effected Keyboard 2 might not replace your keyboard completely since it doesn’t have the AI typing predictability and AI level of spelling correction. But! And that’s an important “but” — this keyboard is all about a different experience and just like a trip to Eurodisney where you would like to stay for a couple of nights, but not to live there forever, then same here with this keyboard. It deserves any bit of attention it’d get from you.<a href="https:&#x2F;&#x2F;youtube.com&#x2F;shorts&#x2F;lj-jIrZ6XZ8" rel="nofollow">https:&#x2F;&#x2F;youtube.com&#x2F;shorts&#x2F;lj-jIrZ6XZ8</a><a href="https:&#x2F;&#x2F;play.google.com&#x2F;store&#x2F;apps&#x2F;details?id=com.vitali.pom.effectedkeyboard2">https:&#x2F;&#x2F;play.google.com&#x2F;store&#x2F;apps&#x2F;details?id=com.vitali.pom...</a>

Show HN: Effected Keyboard 2 – Effects as You Type

After a very long time I&#x27;ve spend a great amount of time revisiting my very first open source project.+1300 logos and icons coming along with a brand new website, high fidelity SVG files, extended documentation and support for all major front end frameworks.GitHub link: <a href="https:&#x2F;&#x2F;github.com&#x2F;vorillaz&#x2F;devicons" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;vorillaz&#x2F;devicons</a>

Show HN: Devicons, +1300 logos and icons in React, SVG, and icon format

Hi HN, I built a simple TUI for viewing and editing .md files in the terminal. More and more markdown files keep appearing in our projects, and I found myself needing a quick way to view(with syntax highlighting) and edit them without leaving the terminal, so I built this

Show HN: A TUI for Markdown view an editing

This is a site that maps the references on Gary Overacre&#x27;s 1980s UNIX Magic
poster to short write-ups with sources. I posted an earlier version about a
year ago [1]. Since then I rewrote some of the annotations, added
deep-linking to individual markers and a frame&#x2F;sidebar view, gave the site a
terminal-style redesign, and fixed historical inaccuracies (daemon etymology,
nroff origin, B language vs. Multics, etc.).Contributions and comments welcome; each marker is a GitHub issue.site: <a href="https:&#x2F;&#x2F;unixmagic.net" rel="nofollow">https:&#x2F;&#x2F;unixmagic.net</a>[1] <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=43019136">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=43019136</a>

Show HN: The Unix Magic poster, annotated (updated)

Hi HN,I built this digital version of Tiao, a two-player turn based strategy board game. Think Checkers meets Go. It&#x27;s free, runs in the browser, has multiplayer, AI, over the board mode and a lot of other neat things. The source is on GitHub (AGPL).The game was originally designed by my friend Andreas Edmeier. He created the rules and has been playtesting and refining the game design for years. I built the website for it. The core in about 2 weeks using TypeScript, Next.js, Express, Websockets, and MongoDB. Fully dockerized, deployed on a Hetzner VPS with Coolify. Authentication with better-auth. Real-time gameplay, ELO matchmaking, OpenPanel analytics, and a fully functional achievements system.Play it: <a href="https:&#x2F;&#x2F;playtiao.com" rel="nofollow">https:&#x2F;&#x2F;playtiao.com</a>
Source: <a href="https:&#x2F;&#x2F;github.com&#x2F;trebeljahr&#x2F;tiao" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;trebeljahr&#x2F;tiao</a>Happy to answer questions about the tech, the game design, or anything else.My hope is that more people will play this game because I think it is genuinely fun and would be cool to one day see people play this on a Go board or on their phones&#x2F;computers.Have a good one.

Show HN: Tiao, A two-player turn-based board game

Author here. Feel free to send questions of any kind.

Show HN: Free textbook on engineering thermodynamics

I built this using the official UK government forecourt fuel price feed.The map aggregates the latest petrol and diesel prices by county, with filters for fuel type and metric. Clicking a county shows the cheapest forecourt, average price, spread, and station count. The feed covers roughly 8,000 UK forecourts and refreshes every 30 minutes. Retailers publish the prices, so there can still be gaps in the data&#x2F;stations but it&#x27;s getting better over time.

Show HN: I mapped the latest UK fuel prices by county

Show HN: Unusual Wikipedia

Show HN: Open Bias – proxy that enforces agent behavior at runtime

I&#x27;m working on a coding agent for building iOS apps. It&#x27;s built on openspec and xcodebuildmcp. It&#x27;s free and open source.

Show HN: AgentSwift – Open-source iOS builder agent

Hi HN, I’m Matt Mahowald, and together with my cofounder John, we’re launching the public beta of Ragnerock today.As a data scientist, you spend the majority of your time wrangling data. Even though you might have a set of techniques and tricks you like to use, how exactly you treat a particular source of data tends to be fairly bespoke, so you end up writing custom logic each time.Ragnerock was born from the observation that modern LLMs can be used to automate a lot of the grunt work involved in this process, while still allowing for fully customizable pipelines. What’s more, by leveraging techniques like constrained decoding, it’s possible to provide a unified query interface regardless of the data source - bridging raw data sources like text and images with your existing structured data living in your databases.Ragnerock has four main components:- A workflow designer that lets you build LLM-driven data processing and analysis pipelines- A job orchestration layer that runs those workflows- A query interface which lets you inspect the results of those workflows with plain SQL- A notebook system which is 100% API-compatible with Jupyter and runs on your existing kernels, so you can easily pull data into your existing environments and analysesRagnerock also supports bring-your-own AI (OpenAI, Anthropic, and Google APIs), databases, and blob storage, so you can join with your existing datasets and have all outputs flow to your data lake. We’re particularly excited about our web crawling feature, which allows you to scrape websites and trigger workflows on updates: for example, you might point Ragnerock at your favorite blog and run a workflow to assess posts for topics and sentiment.You can try it out at <a href="https:&#x2F;&#x2F;www.ragnerock.com" rel="nofollow">https:&#x2F;&#x2F;www.ragnerock.com</a> ; no credit card needed and the first 20 hours of compute are free. It’s an early-stage product so we’re especially interested in feedback.Happy to answer any questions - John and I will be around in the comments today.