Hacker News

Hey guys!

I’ve been working on a web app called CodeCafé—a collaborative, browser-based code editor inspired by VS Code and Replit, but with no downloads, no sign-up, and zero setup. You just open the link and start coding—together.

The frontend is built with React and TypeScript, and the backend runs on Spring Boot, which handles real-time editing via WebSockets. For syncing changes, I’m using Redis along with a custom Operational Transformation system (no third-party libraries!).

The idea came after I found out a local summer school was teaching coding using Google Docs (yes, really). Google Docs is simple and free, but I wanted something that could actually be used for writing and running real code—without the need for any sign-ups or complex setups. That’s how CodeCafé came to life.

Right now, the app doesn’t store files anywhere, and you can’t export your work. That’s one of the key features I’m working on currently.

If you like what you see, feel free to star the repo to support the project!!

Check it out and let me know what you think!

GitHub: https://github.com/mrktsm/codecafe

Web App: https://codecafe.app

Comments URL: https://news.ycombinator.com/item?id=43877089

Points: 3

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Article URL: https://www.scientificamerican.com/article/self-driving-cars-have-new-rules-in-the-u-s-heres-why-that-matters/

Comments URL: https://news.ycombinator.com/item?id=43877077

Points: 1

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Article URL: http://www.catb.org/~esr/faqs/clone-unix-guide.txt

Comments URL: https://news.ycombinator.com/item?id=43877068

Points: 1

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Article URL: https://www.androidauthority.com/android-desktop-mode-leak-3550321/

Comments URL: https://news.ycombinator.com/item?id=43877053

Points: 1

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Article URL: https://medium.com/intuitionmachine/the-search-for-alternative-ai-interfaces-discovery-versus-expressiveness-4c1e0febbcd9

Comments URL: https://news.ycombinator.com/item?id=43877048

Points: 1

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Article URL: https://techcommunity.microsoft.com/blog/microsoft-entra-blog/new-user-experience-for-consumer-authentication/3822035

Comments URL: https://news.ycombinator.com/item?id=43877043

Points: 1

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Article URL: https://github.com/golang/go/issues/73581

Comments URL: https://news.ycombinator.com/item?id=43876987

Points: 1

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Article URL: https://www.cell.com/cell/fulltext/S0092-8674(25)00402-7

Comments URL: https://news.ycombinator.com/item?id=43876929

Points: 1

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Article URL: https://www.moneylife.in/article/ai-in-customer-service-frustration-with-glitchy-automation-and-data-capture/77026.html

Comments URL: https://news.ycombinator.com/item?id=43876900

Points: 1

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Article URL: https://www.apply4me.io/en

Comments URL: https://news.ycombinator.com/item?id=43876895

Points: 1

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Article URL: https://arxiv.org/abs/2504.18920

Comments URL: https://news.ycombinator.com/item?id=43876891

Points: 2

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I’m curious about what people’s perception of real estate agents. I am wondering if I have made lots of assumptions about real estate agents, or if other people have similar perceptions.

I’d love it if you would share your thoughts on my anonymous survey. Here is the link…

https://forms.gle/wMaZRFBeKo1SQ8tn7

Comments URL: https://news.ycombinator.com/item?id=43876889

Points: 1

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Article URL: https://archive.org/download/gov.uscourts.cand.238371/gov.uscourts.cand.238371.877.1.pdf

Comments URL: https://news.ycombinator.com/item?id=43876883

Points: 1

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Article URL: https://www.csoonline.com/article/3973070/neurohacks-to-outsmart-stress-and-make-better-cybersecurity-decisions.html

Comments URL: https://news.ycombinator.com/item?id=43876869

Points: 1

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Article URL: https://fee.org/articles/why-free-speech-matters/

Comments URL: https://news.ycombinator.com/item?id=43876858

Points: 1

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Article URL: https://www.thehillandvalleyforum.com

Comments URL: https://news.ycombinator.com/item?id=43876851

Points: 1

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Article URL: https://spectrum.ieee.org/data-center-cooling-xmems

Comments URL: https://news.ycombinator.com/item?id=43876847

Points: 1

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Hey HN!

Over the past few months as part of my AP Research class, I've been working on creating the worlds best Geoguessr AI. My final report (submitted for my AP Research class) for Locamage will be published soon on https://locamage.dev.

The images are blurred to prevent bots from downloading them, and to not violate copyright. Hope you enjoy getting crushed by Locamage! Supported by the TPU Research Cloud.

- Pinak

Comments URL: https://news.ycombinator.com/item?id=43876846

Points: 1

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Article URL: https://arxiv.org/abs/2502.03689

Comments URL: https://news.ycombinator.com/item?id=43876843

Points: 3

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Article URL: https://ondevice-ai.app/

Comments URL: https://news.ycombinator.com/item?id=43876830

Points: 1

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