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Open Source @Github

Staying cool without refrigerants: Next-generation Peltier cooling

https://news.samsung.com/global/interview-staying-cool-without-refrigerants-how-samsung-is-pioneering-next-generation-peltier-cooling
41•simonebrunozzi•1h ago•29 comments

Stdio(3) change: FILE is now opaque (OpenBSD)

https://undeadly.org/cgi?action=article;sid=20250717103345
63•gslin•3h ago•27 comments

XMLUI

https://blog.jonudell.net/2025/07/18/introducing-xmlui/
371•mpweiher•7h ago•197 comments

New colors without shooting lasers into your eyes

https://dynomight.net/colors/
102•zdw•3d ago•35 comments

Tough news for our UK users

https://blog.janitorai.com/posts/3/
107•airhangerf15•1h ago•50 comments

Coding with LLMs in the summer of 2025 – an update

https://antirez.com/news/154
339•antirez•10h ago•250 comments

Simulating Hand-Drawn Motion with SVG Filters

https://camillovisini.com/coding/simulating-hand-drawn-motion-with-svg-filters
50•camillovisini•3d ago•4 comments

Subreply – an open source text-only social network

https://github.com/lucianmarin/subreply
33•lcnmrn•3h ago•18 comments

Jove (Jonathan's Own Version of Emacs)

https://en.wikipedia.org/wiki/JOVE
20•nanna•3d ago•8 comments

Insights on Teufel's First Open-Source Speaker

https://blog.teufelaudio.com/visionary-mynds-insights-on-teufels-first-open-source-speaker/
58•lis•4h ago•12 comments

FFmpeg devs boast of another 100x leap thanks to handwritten assembly code

https://www.tomshardware.com/software/the-biggest-speedup-ive-seen-so-far-ffmpeg-devs-boast-of-another-100x-leap-thanks-to-handwritten-assembly-code
30•harambae•1h ago•9 comments

Hacking a Toniebox

https://www.schafe-sind-bessere-rasenmaeher.de/tech/hack-all-the-things-toniebox/
57•LorenDB•4h ago•30 comments

Show HN: Conductor, a Mac app that lets you run a bunch of Claude Codes at once

https://conductor.build/
84•Charlieholtz•3d ago•36 comments

Digital vassals? French Government 'exposes citizens' data to US'

https://brusselssignal.eu/2025/07/digital-vassals-french-government-exposes-citizens-data-to-us/
166•ColinWright•10h ago•63 comments

LLM architecture comparison

https://magazine.sebastianraschka.com/p/the-big-llm-architecture-comparison
326•mdp2021•14h ago•22 comments

EU commissioner shocked by dangers of some goods sold by Shein and Temu

https://www.theguardian.com/business/2025/jul/20/eu-commissioner-shocked-dangerous-goods-sold-shein-temu
26•Michelangelo11•1h ago•14 comments

Payment processors' bar on Japanese adult content endangers democracy (2024)

https://automaton-media.com/en/news/nier-creator-speaks-out-against-payment-processors-pressuring-japanese-adult-content-platforms/
110•thisislife2•3h ago•76 comments

A Tour of Microsoft's Mac Lab (2006)

https://davidweiss.blogspot.com/2006/04/tour-of-microsofts-mac-lab.html
156•ingve•11h ago•27 comments

The old Caveman Chemistry website (1996-2000)

https://cavemanchemistry.com/oldcave/
71•marcodiego•7h ago•7 comments

QuakeNotch: Quake Terminal on your MacBook's notch

https://quakenotch.com
49•rohanrhu•3h ago•51 comments

Speeding Up My ZSH Shell

https://scottspence.com/posts/speeding-up-my-zsh-shell
97•saikatsg•6h ago•50 comments

Master Foo and the Script Kiddie (1996)

https://soda.privatevoid.net/foo/arc/02.html
67•RGBCube•4h ago•35 comments

What My Mother Didn't Talk About (2020)

https://www.buzzfeednews.com/article/karolinawaclawiak/what-my-mother-didnt-talk-about-karolina-waclawiak
4•NaOH•3d ago•1 comments

Async I/O on Linux in databases

https://blog.canoozie.net/async-i-o-on-linux-and-durability/
168•jtregunna•15h ago•84 comments

AI is killing the web – can anything save it?

https://www.economist.com/business/2025/07/14/ai-is-killing-the-web-can-anything-save-it
84•edward•12h ago•103 comments

The Minecraft game score unexpectedly became big business for its composer

https://www.billboard.com/pro/how-minecraft-score-became-big-business-for-composer/
77•tunapizza•4d ago•47 comments

"The Bitter Lesson" is wrong. Well sort of

https://assaf-pinhasi.medium.com/the-bitter-lesson-is-wrong-sort-of-a3d021864924
31•GavCo•5h ago•19 comments

Laminar Flow Airfoil

http://www.aviation-history.com/theory/lam-flow.htm
20•colinprince•2d ago•1 comments

New Antimatter Physics Discovered at the Large Hadron Collider

https://www.scientificamerican.com/article/the-large-hadron-collider-discovers-antimatter-behaving-oddly-in-new-class/
34•Bluestein•3h ago•6 comments

A human metaphor for evaluating AI capability

https://mathstodon.xyz/@tao/114881418225852441
117•bertman•13h ago•24 comments
Open in hackernews

Show HN: Conductor, a Mac app that lets you run a bunch of Claude Codes at once

https://conductor.build/
84•Charlieholtz•3d ago
https://threadreaderapp.com/thread/1945870105109246401.html

https://x.com/charliebholtz/status/1945870105109246401

Comments

jamil7•3d ago
Oh cool, I was already doing this with git worktrees but a ui for it would be handy.
Charlieholtz•8m ago
Let me know how it goes!
WalterSear•3d ago
You might want to mention it's silicon only.
Charlieholtz•3d ago
Sorry about that, working on Intel right now!
dgritsko•3d ago
This is awesome. A couple of suggestions:

- It'd be great to change the default branch used for creating new workspaces.

- I'd like the ability to add custom tools to the "Open in..." menu.

Charlieholtz•3d ago
Ah yeah! Which IDE do you use?

> It'd be great to change the default branch used for creating new workspaces. Yeah you can actually change this now! If you click the repo name you can make changes to the "setup script". If you added `git checkout -b "branch name"` it would run that on every new workspace instance.

dgritsko•3d ago
At the moment it's mostly Cursor or VS Code, but I was actually thinking of SourceTree. I'd like to look at the pending changes and manage the commits myself, and I could do that if I could add "open -a SourceTree ." as a custom command. I didn't see a place to edit a setup script, is that just on the filesystem?
Charlieholtz•3d ago
Got it! If you click the repository name in the left sidebar, you should see a field for setup script.
dgritsko•3d ago
Ah, excellent - appreciate the help! I'm already getting a ton of value out of this tool, thanks for sharing!
Charlieholtz•3d ago
wooo that's awesome to hear! keep the feedback coming!
dgritsko•3d ago
FWIW, this is what I wound up with - keeps the original branch name but ensures that it's based on the latest from the "dev" branch:

orig_branch=$(git branch --show-current) && git checkout dev && git pull && git branch -D "$orig_branch" && git checkout -b "$orig_branch"

janpieterz•1d ago
Love it! Even just simply freeing my main branch would be a big win so I can keep working as well.

But no way to find out if there’s any data sent to your servers etc, unless I’m missing some links?

Charlieholtz•20m ago
Love to hear it! Your messages are just between you and Claude Code — it all runs on your local Claude Code installation via the SDK (https://docs.anthropic.com/en/docs/claude-code/sdk)
lachances•4h ago
Any way to have it not require full write access to your entire GitHub account?
Charlieholtz•26m ago
Yes, we're working on this!

Right now the app uses GitHub's OAuth sign in (https://docs.github.com/en/apps/oauth-apps/building-oauth-ap...) which unfortunately doesn't allow for fine-grained permissions (it will only have access to organization code if you explicitly grant it) . We're switching our sign-in to a GitHub App so we can make the permissions fine-grained.

lordnacho•4h ago
Looks cool, but I don't quite get it? What happens if I just open a new terminal window and start Claude in that?
simonbw•3h ago
That works when you just do it once. Where you can run into problems is when you do that twice. One instance might change a file one way, and the other might change it in a conflicting way, then you have two Claudes getting confused about the state of that file and it gets messy. You can solve this by checking out multiple copies of your repo and having only one instance of Claude working per copy. This app seems like it just provides you with a nice UI for doing that.
lmeyerov•2h ago
Yes that's how I do Claude code manually, git branch per terminal window, and very rarely multiple agents on the same branch

It mostly works, except we don't have a clean flow for docker: shared system daemon & repository means need to manually tag & run by branch/project (docker compose -p ...), which is friction for the LLM and even more setup than we want

As a heavy multi session Claude Code user, this may be what finally converts me to cloud IDEs...

maxverse•3h ago
Who does your design? I absolutely love this aesthetic, both this product, and your site (chorus.sh). What is this even called? I went for a similar vibe with tinylogger.com, but def didn't have your skills to pull it off.
aaronbrethorst•42m ago
corus.sh looks like a modified bento grid layout: https://tailwindcss.com/plus/ui-blocks/marketing/sections/be...
Charlieholtz•23m ago
Ah thank you! Our designer is Julian Kelly (https://jfk.works). He's amazing, and worked on Messenger at Meta — a background which has been surprisingly helpful since everything we're working on is a spin on chatting.
abdullin•3h ago
Is it similar to what OpenAI Codex does with isolated environments per agent run?
Charlieholtz•8m ago
We create an isolated git worktree locally on your machine — whereas Codex (I believe) is running a container on the cloud
davidbalbert•3h ago
We do our dev on Linux desktops using VS Code ssh remotes from our Macs. Is this possible with Conductor?
rapatel0•3h ago
Can you intelligently bake in Claude code router? That would help both with token budget but more importantly multiplexing between different models.
simonbw•3h ago
I have been imagining something like this would be perfect for working with Claude Code. I tried a couple other apps but they seemed to change too much without providing enough value for that change. This feels like just a nice clean simple extension of how Claude code already works that solves my most common pain points in the workflow.

Anyways, excellent work!

Charlieholtz•21m ago
thanks so much!!
freedomben•3h ago
Cool idea, and I'm definitely not in the target market (I'm a Linux user and also very hesitant to adopt proprietary tools to my important workflows), but something like this could be useful. Right now though it's pretty easy to run each in a different tmux window and check on it, but once I have about 3 or more running at a time it's very easy to forget about one and have it paused waiting for confirmation. A tool like this to add a dashboard of sorts would be nice. Definitely interesting to think about!
myflash13•3h ago
I was really excited to try this but this does NOT work the way I expected. I wanted a simple git worktree manager for my existing, already-checked-out repository. Instead, it requests Github permissions and clones the repo from Github. This is bad, because you need to run all the dependency installs, etc. for every workspace before being able to test anything. In other words it's like Codex or Cursor Background Agents, except worse, because it's on your machine. The reason I don't use Codex or Background Agents is because my project has way too many dependencies and would take way too long (and too complicated) to install everything required to have an isolated running instance, plus there would be DNS conflicts, external API conflicts, among other issues.

What I do want is simple git worktree management for an already-checked-out repo on my machine, no Github permissions or dependency re-installation (copying node_modules, etc.).

zachrip•2h ago
I tried out git worktrees recently and while they do what's on the tin, I really didn't like them as much as I thought I would. I actually like the way cursor does it despite the fact that it is a VM - I wish I could have their same UI/UX but with local worktrees.
pjm331•2h ago
Yes I had a similar experience. the thing that tripped me up with git worktrees, which is maybe obvious in retrospect, is that they don’t include things that are not tracked by git - e.g. .env.development.local

So starting a new worktree requires additional setup and isn’t as simple as just checking out a new branch

jacksondc•16m ago
Hi, creator here. If you want to copy node_modules instead of reinstalling, you can click on the repo and add a setup script that does the copy. Sorry it’s a bit obscure—we’re working on making this easier!

Would love to discuss more what kind of testing setup you’re looking for, want to shoot me an email at jackson@melty.sh?

itsalotoffun•1h ago
Full read-write access required to all your Github account's repos. Not just code. Settings, deploy keys. The works. Full access to your organisation settings. Not a privacy policy in sight. Zero disclosure of data practices.

You are INSANE to authorize this app on anything other than throwaway code.

@charlieholtz care to comment?

Charlieholtz•28m ago
Hi! Right now the app uses GitHub's OAuth sign in (https://docs.github.com/en/apps/oauth-apps/building-oauth-ap...) which unfortunately doesn't allow for fine-grained permissions.

It will only have access to organization code if you explicitly grant it. We're working on switching our sign-in to a GitHub App so we can make the permissions fine-grained.

atlgator•1h ago
Is it Claude Codes or Claudes Code?
Charlieholtz•18m ago
Claudes' Codes?!