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Show HN: Reaktiv – I built Excel-like reactive programming for Python

https://bui.app/when-frontend-reactivity-meets-backend-python-the-story-of-my-first-1-000-download-library/
2•buibuibui•1y ago
Hi HN! I created Reaktiv, a Python library bringing reactive programming to the backend world that recently hit 1,000+ monthly downloads.

I'm actively promoting it because I believe signal-based reactivity (a concept that spread rapidly in frontend development) has huge untapped potential in Python. My breakthrough came when I stopped describing it as "Angular signals for Python" and started calling it "Excel-like computation graphs" - suddenly Python developers understood the value.

The library automatically tracks dependencies between computations, only recalculating values when dependencies change. This eliminates manual dependency tracking, prevents synchronization bugs, and reduces cognitive load when managing complex state.

Interestingly, I've noticed some initial interest from data scientists, though I'm still exploring what specific problems it might solve for them. I also believe the Home Assistant/IoT communities could benefit greatly from this approach.

Would love your thoughts on bringing frontend patterns to backend development!

AI and the Fall of Writing

1•Flundstrom2•2m ago•0 comments

Taliban Declares War on Smartphones

https://www.npr.org/2026/07/10/g-s1-132396/smartphones-taliban-afghanistan-ban
1•paulpauper•3m ago•0 comments

FCC Approves Test of Space Mirror to Light Night Sky Despite Outcry

https://www.nytimes.com/2026/07/10/climate/fcc-space-mirror.html
1•paulpauper•3m ago•0 comments

From A.I. To the Deep State, Michel Foucault Foresaw It All

https://www.nytimes.com/2026/07/10/books/review/michel-foucault-ai-tech-power.html
1•paulpauper•4m ago•0 comments

Ask HN: Recommended technographic API?

1•Poomba•5m ago•0 comments

Can We Understand How Large Language Models Reason?

https://cacm.acm.org/news/can-we-understand-how-large-language-models-reason/
2•adunk•6m ago•0 comments

MaFrida v0.3.0 Is Out

https://github.com/theShinigami/MaFrida
1•shiroChef•8m ago•0 comments

Dead Process Mate – a menu-bar app to kill leftover Node/dev processes

https://github.com/BartosK97/dead-process-mate
1•bartosk97•8m ago•0 comments

Claude Code get 50% more weekly limit

https://support.claude.com/en/articles/15910845-claude-code-may-july-2026-weekly-limits-promotion
3•alvis•9m ago•0 comments

Cosmic is quietly doing things GNOME and KDE still make you fight for

https://www.xda-developers.com/cosmic-hit-version-1-2-quietly-doing-things-gnome-kde-still-make-y...
3•naves•12m ago•0 comments

Show HN: Scramble Quest

https://scramblequest.app/
1•furyofantares•12m ago•0 comments

Teardown: A Generic 7-Port USB 3.0 Hub That Wasn't

https://goughlui.com/2026/07/09/teardown-a-generic-7-port-usb-3-0-hub-that-wasnt/
1•speckx•12m ago•0 comments

I Put My Son in a Swamp

https://thepotato.tech/posts/i-put-my-son-in-a-swamp/
1•nickstinemates•18m ago•0 comments

The WiFi Certificate That Didn't Exist an Hour Ago

https://thepotato.tech/posts/the-wifi-cert-that-didnt-exist-an-hour-ago/
1•nickstinemates•18m ago•0 comments

The Most Famous AI Writing Tic Is Also the Most Mysterious

https://www.theatlantic.com/technology/2026/07/ai-chatbot-writing-tic-negative-parallelism/687892/
1•tekdude•20m ago•0 comments

Apple's M6, M7 and M8 Chips Show How AI Is Reshaping the Company

https://www.bloomberg.com/news/newsletters/2026-07-12/apple-s-chip-plans-m6-m7-pro-m7-max-m7-ultr...
1•newusertoday•21m ago•0 comments

Against Usefulness

https://www.motivenotes.ai/p/against-usefulness
6•supo•23m ago•0 comments

Soulless – List of AI Artists Hiding on Spotify

https://soullessmusic.com/
1•ChrisArchitect•23m ago•0 comments

Show HN: Block dangerous Git and shell commands from being executed by agents

https://github.com/Dicklesworthstone/destructive_command_guard
1•adithyaharish•24m ago•0 comments

Dictation and Meeting App Sends to Apple Notes – Free and Local Models

https://voice.baselinemakes.com/
1•stevenhubertron•24m ago•1 comments

W11 Copilot tells you what's slowing down your PC, while using 1GB RAM itself

https://www.windowslatest.com/2026/07/12/windows-11-copilot-ai-can-now-tell-you-whats-slowing-dow...
2•speckx•24m ago•0 comments

Programming thought experiment: stuck in a room with a PC without an OS

https://old.reddit.com/r/programming/comments/9x15g/comment/c0ewj2c/
1•Tomte•27m ago•0 comments

AI-Powered Multi Tenant Platform

https://svoxx.com/int/en
1•kilincarslan•32m ago•0 comments

Rustnet: Per-process network monitoring with deep packet inspectio

https://github.com/domcyrus/rustnet
1•thunderbong•33m ago•0 comments

Claude Fable 5 access extended through July 19

https://xcancel.com/claudeai/status/2076351399999557669#m
5•Topfi•34m ago•1 comments

Show HN: Free AI travel destination search across Asia

https://asianexpats.com
1•developeron29•35m ago•0 comments

Restarting Germany's Reactors: Viability and Outlook [pdf]

https://www.radiantenergygroup.com/_files/ugd/ae75b7_bc5db590cf5a4ac6a4a0d6812a58ada6.pdf
1•throw0101d•38m ago•2 comments

The Four "Ions", or How to Provision CIAM Users (2023)

https://ciamweekly.substack.com/p/the-four-ions-or-how-to-provision
1•mooreds•38m ago•0 comments

Local-first image annotation–try it in the browser, no signup, nothing uploaded

https://thevision.works/demo
2•Wiseye•41m ago•0 comments

Show HN: SayItDev LLM and Speech capabilities with 0 dependencies and no models

https://github.com/innovatorved/sayitdev
3•innovatorved•41m ago•0 comments