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Showing posts from June, 2026

New top story on Hacker News: Ask HN: Is "no source code was copied" still a sufficient copyright defense?

Ask HN: Is "no source code was copied" still a sufficient copyright defense? 18 by oscgam1 | 15 comments on Hacker News. We are all familiar with the Corgi event: https://ift.tt/YB80CEj With the barrier to create new apps having dropped significantly thanks to LLMs, I am seeing more cases about copyright and unfair competition. I've seen and participated in some of these cases. Usually expert witnesses are required. Curious to hear the community stance on this one. "Now software developers are feeling what authors and artist felt". https://ift.tt/93bAlTa There are several claims of: Copying UI is Ok, your product is not undifferentiated enough. Here is a legal assessment of the situation: https://ift.tt/2NorxDk

New top story on Hacker News: Show HN: OpenKnowledge – open source AI-first alternative to Obsidian/Notion

Show HN: OpenKnowledge – open source AI-first alternative to Obsidian/Notion 27 by engomez | 5 comments on Hacker News. Hi HN, Nick here. We’re launching OpenKnowledge ( https://ift.tt/lspZmrq ), a “what you see is what you get” markdown editor that has direct integrations with Claude, Codex, and Cursor. Available as MacOS app or CLI. Fully free/local and OSS ( https://ift.tt/VOXp9eu ). We built this because we wanted a “Google docs” like experience for writing and sharing markdown files across our team. Obsidian is the best alternative we tried, but found it doesn’t have a true “what you see is what you get” UI and it didn’t integrate well with Claude/Codex outside of community plugins. So we built OpenKnowledge. It takes shape as: 1. A MacOS app with a file navigator, the WYSIWYG editor, and link explorer. 2. Integrations with the Claude, Codex, and Cursor desktop apps. The agents can open an OpenKnowledge editor within their embedded web browsers for a side-by-side experience. 3....

New top story on Hacker News: Show HN: Pulse – Dashboard for Claude Code, approve tool calls from your phone

Show HN: Pulse – Dashboard for Claude Code, approve tool calls from your phone 11 by nikitadvd | 3 comments on Hacker News. Hi everyone, I'm a student from Flanders and I like to use Claude Code for my purposes, ideas and also just for fun and also make solutions for problems in our world!) So that's why I built "Pulse", it's an local application that you can easily install to your device and easily follow what your claude agent is doing right now in your terminal session with an ambiance design and easily give permissions for your agent. For those who wants to see directly how much tokens you spent, and how much the session costs, and approve tool calls from everywhere from your phone and everything runs locally without an account can install Pulse from GitHub: https://ift.tt/1XqxtyI

New top story on Hacker News: Show HN: Trace – Offline Mac meeting transcripts you can flag mid-call

Show HN: Trace – Offline Mac meeting transcripts you can flag mid-call 14 by AG342 | 3 comments on Hacker News. I'm the developer of Trace, a non-intrusive, shortcut-driven Mac app that records and transcribes your meetings on-device. I know, another meeting transcription app. Please bear with me though, I'm confident that this is at least a little novel. I primarily built Trace for myself. I'd been using MacWhisper, but there was enough fiddling before each call that I'd forget to start it and walk out of an hour-long meeting with nothing written down. So the things I cared about most were that it's quick to activate and stays out of the way. You activate Trace by pressing a global shortcut (configurable), which reveals a small bar at the bottom of your screen (there's also a keystroke and/or option to hide it entirely if you'd rather not see it at all). As I was building it I wanted to bake in a couple of workflows I'd wished for in other transcript...

New top story on Hacker News: Inside FAISS: Billion-Scale Similarity Search

Inside FAISS: Billion-Scale Similarity Search 5 by tohms | 0 comments on Hacker News. Author here. I wrote this as a visual companion to the 2017 FAISS paper (Johnson, Douze, Jégou), focused on the parts I found hardest to grok from text alone. The article covers a subset of what FAISS does, with the paper as the source of truth. NSG, FastScan, IMI are not covered here, they'll get their own articles. I'd be especially interested in feedback on: - the IVFPQ / IVFADC explanation, particularly the LUT reuse argument - whether the GPU part captures enough of the actual complexity Happy to answer questions.

New top story on Hacker News: Show HN: Cost.dev (YC W21) – making agents cost-aware and cheaper to call

Show HN: Cost.dev (YC W21) – making agents cost-aware and cheaper to call 9 by akh | 1 comments on Hacker News. We launched Infracost on HN five years ago ( https://ift.tt/0PSHGKW ) where our CLI generated cost estimates for infra-as-code, e.g. "this Terraform PR adds $400/mo". The idea was to shift cloud costs (FinOps) left, so engineers get visibility of costs before deployment and make better decisions. Earlier this year we started seeing agent traffic in our logs and it looked like coding agents were calling our CLI. But that CLI wasn't designed with coding agents in mind. We went down a philosophical rabbit hole to see if a CLI is even needed anymore given that Claude, Copilot et al. already follow best practices. Ultimately we decided to create a new CLI from the ground up with coding agents in mind for two reasons: 1. We optimized the CLI for agent callers and cut Claude's output token usage by up to 79% and API cost by up to 67% versus a bare-Claude baselin...

New top story on Hacker News: Show HN: RePlaya – self-hosted browser session replay with live tailing

Show HN: RePlaya – self-hosted browser session replay with live tailing 4 by shikhar | 0 comments on Hacker News. Hi HN, I'm one of the founders of s2.dev. RePlaya ( https://ift.tt/2W3bm4V ) is a self-hosted browser session replay tool using rrweb ( https://ift.tt/gLbn4Qx ). It occurred to me that a durable stream per session would be a much neater architectural foundation for much of what you'd want from such a tool. As a unique feature, it also made live tailing straightforward because the player can read from the same stream the recorder is appending to. The alternative architecture is likely an ingest firehose which is then indexed, with associated complexity and latency. You'd have to string together multiple data systems like a message queue, a metadata database, and blob storage and/or an OLAP database. Here the only dependency is S2, which has an open source version you can self-host called s2-lite ( https://ift.tt/qklKg63 ). How it works: - one S2 stream per bro...