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OpenCiv3: Open-source, cross-platform reimagining of Civilization III

https://openciv3.org/
479•klaussilveira•7h ago•117 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
817•xnx•12h ago•489 comments

How we made geo joins 400× faster with H3 indexes

https://floedb.ai/blog/how-we-made-geo-joins-400-faster-with-h3-indexes
37•matheusalmeida•1d ago•2 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
159•isitcontent•7h ago•17 comments

Monty: A minimal, secure Python interpreter written in Rust for use by AI

https://github.com/pydantic/monty
156•dmpetrov•7h ago•69 comments

A century of hair samples proves leaded gas ban worked

https://arstechnica.com/science/2026/02/a-century-of-hair-samples-proves-leaded-gas-ban-worked/
95•jnord•3d ago•13 comments

Dark Alley Mathematics

https://blog.szczepan.org/blog/three-points/
53•quibono•4d ago•7 comments

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

https://vecti.com
262•vecti•9h ago•125 comments

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

https://eljojo.github.io/rememory/
210•eljojo•10h ago•135 comments

Microsoft open-sources LiteBox, a security-focused library OS

https://github.com/microsoft/litebox
331•aktau•13h ago•158 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
328•ostacke•13h ago•86 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
413•todsacerdoti•15h ago•220 comments

PC Floppy Copy Protection: Vault Prolok

https://martypc.blogspot.com/2024/09/pc-floppy-copy-protection-vault-prolok.html
26•kmm•4d ago•1 comments

Delimited Continuations vs. Lwt for Threads

https://mirageos.org/blog/delimcc-vs-lwt
5•romes•4d ago•1 comments

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
340•lstoll•13h ago•244 comments

Show HN: R3forth, a ColorForth-inspired language with a tiny VM

https://github.com/phreda4/r3
53•phreda4•6h ago•9 comments

How to effectively write quality code with AI

https://heidenstedt.org/posts/2026/how-to-effectively-write-quality-code-with-ai/
200•i5heu•10h ago•147 comments

I spent 5 years in DevOps – Solutions engineering gave me what I was missing

https://infisical.com/blog/devops-to-solutions-engineering
116•vmatsiiako•12h ago•38 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
152•limoce•3d ago•79 comments

Introducing the Developer Knowledge API and MCP Server

https://developers.googleblog.com/introducing-the-developer-knowledge-api-and-mcp-server/
27•gfortaine•5h ago•3 comments

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
246•surprisetalk•3d ago•32 comments

I now assume that all ads on Apple news are scams

https://kirkville.com/i-now-assume-that-all-ads-on-apple-news-are-scams/
1002•cdrnsf•16h ago•421 comments

FORTH? Really!?

https://rescrv.net/w/2026/02/06/associative
47•rescrv•15h ago•17 comments

I'm going to cure my girlfriend's brain tumor

https://andrewjrod.substack.com/p/im-going-to-cure-my-girlfriends-brain
71•ray__•4h ago•34 comments

Evaluating and mitigating the growing risk of LLM-discovered 0-days

https://red.anthropic.com/2026/zero-days/
38•lebovic•1d ago•11 comments

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

https://docs.smooth.sh/cli/overview
78•antves•1d ago•59 comments

How virtual textures work

https://www.shlom.dev/articles/how-virtual-textures-really-work/
32•betamark•14h ago•28 comments

Show HN: Slack CLI for Agents

https://github.com/stablyai/agent-slack
41•nwparker•1d ago•11 comments

Female Asian Elephant Calf Born at the Smithsonian National Zoo

https://www.si.edu/newsdesk/releases/female-asian-elephant-calf-born-smithsonians-national-zoo-an...
8•gmays•2h ago•2 comments

Claude Opus 4.6

https://www.anthropic.com/news/claude-opus-4-6
2275•HellsMaddy•1d ago•981 comments
Open in hackernews

Show HN: Cactoide – Federated RSVP Platform

https://cactoide.org/
68•orbanlevi•2mo ago

Comments

andy_ppp•2mo ago
Very cool, is it possible to add voting for multiple dates too?
orbanlevi•2mo ago
Right now nope, but I'm planning to add new features.
thedangler•2mo ago
API, Please make an API? I could integrate my RSVP system into it which requires more specific features but could use this to create the base for the event.
orbanlevi•2mo ago
You need an API for creating events?
macintux•2mo ago
Not the person who asked for it, but I think they were suggesting they'd use the API to retrieve information about RSVPs/current state of a planned event. (Perhaps even RSVP on someone else's behalf.)
thedangler•2mo ago
Yes, I would piggyback on to the base event which would be created, which would allow me to build out my extra features which need a base event.

API's are always a good thing, weather they are private or not.

righthand•2mo ago
This is cool looking but you should note in the front page that it has ical, et al. calendar features.
orbanlevi•2mo ago
Thanks for the feedback.
mrtesthah•2mo ago
How does it compare to Mobilizon?
orbanlevi•2mo ago
It's similar, but not that good as Mobilizon, Im focusing on simplicity with an improved UI and experience.

I'm assuming easier to spin up a new instance on your own, but this is my personal opinion.

rapnie•2mo ago
Do you have plans for adding ActivityPub support in the future? That would be very cool, and having interop with these other FOSS projects will help give things network effects.
james-bcn•2mo ago
Mobilizon looks interesting but their docs results in a 404, which doesn't inspire confidence.
verdverm•2mo ago
Smoke Signal has a similar system on ATProto (no affiliation)

I believe this is the project that has the Rust code (on the GitHub of ATProto)

@smokesignal.events/acudo at main · tangled https://share.google/HG59BdzeJpib7fw5x

orbanlevi•2mo ago
Ohh nice! I'll look into it.
dbjacobs•2mo ago
Any plans to add the ability to have waiver/release forms for an event that need to be signed?
orbanlevi•2mo ago
I didn’t think of that.
macintux•2mo ago
How do you plan on handling the influx of garbage? I like the idea, but I’m inclined to think registration of event organizers would be necessary to control the spam.
orbanlevi•2mo ago
Yea something like that would be necessary in the long run, or just use the event creation cookie user to moderate the rsvps. (or you can create private events)
nrhrjrjrjtntbt•2mo ago
How does federated social already handle spam? just use that. I guess specific servers can ban.
roshannarma•2mo ago
This is super cool, going to try using this for an event this week and self-host a server if it works nicely, have been looking for a privacy-first version of Partiful for a while.
james-bcn•2mo ago
Needs the ability to have a waitlist.
orbanlevi•2mo ago
Noted.
atulvi•2mo ago
There are several offensively titled events. No moderation whatsoever. This is likely 100% vibe coded in a day.
orbanlevi•2mo ago
Ofc, don’t have to moderate every randomly submitted event, but I am planning to add a moderation page to delete or filter offensive events.
rpearce9•2mo ago
I quite like this, have just spun up a quick self hosted instance to play with.

I'm wondering though - after creating an event, how does one see the list of who has RSVPd to attend? I can't seem to find any way to see this info.

orbanlevi•2mo ago
In the detailed page of the event, there is the rsvp list.
matteohorvath•2mo ago
do you plan to put selling tickets into it?
hacb•2mo ago
Any plan for supporting different timezones?
zestyping•2mo ago
Please, consider a better name. It's really hard to promote something with a name that no one can pronounce or spell.
imvetri•2mo ago
What does federated mean
doppelgunner•2mo ago
Your tool looks great. You could showcase it on NextGen Tools, a Product Hunt alternative: https://nxgntools.com