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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!

Ethiopia Banned Petrol Cars but Climate Was Never the Real Story

https://www.energytransitionafrica.com/insights/article/ethiopia-ev-ban-explainer-africa-energy-t...
1•e12e•22s ago•0 comments

LLMs Deal with Fraudulent Papers

https://www.science.org/content/blog-post/how-llms-deal-fraudulent-papers
1•Tomte•1m ago•0 comments

OBR: Britain faces 'painful' job losses from AI

https://www.telegraph.co.uk/business/2026/11/13/britain-faces-very-painful-job-losses-from-ai-obr...
1•encyclopedism•3m ago•0 comments

I built a ChatGPT Voice app for the 2007 Nokia N95

https://conoroneill.net/2026/11/15/chatgpt-on-nokia-n95/
1•conoro•3m ago•1 comments

LeakRadar – 18-signal B2B domain and revenue leak auditor on Cloudflare Workers

https://leakradar.leakradar.workers.dev
1•Buisnessdesigne•5m ago•0 comments

A local, open-source software factory

https://github.com/vinchenkov/Culler
1•vinchenkov•6m ago•1 comments

Does until it doesn't and doesn't until it does

https://rodneybrooks.com/does-until-it-doesnt-and-doesnt-until-it-does/
2•jeffreyrogers•7m ago•0 comments

A History of Telephone Speaking Clocks

https://www.youtube.com/watch?v=A6SK0xeZztM
1•CharlesW•8m ago•0 comments

Show HN: Perfectclone – Yoink the source code of any website, not an AI clone

https://github.com/eshaangulati123/perfectclone
1•eshaangulati•12m ago•0 comments

The End of the Hard-Coded GUI

https://deadneurons.substack.com/p/the-end-of-the-hard-coded-gui
1•nr378•12m ago•0 comments

F/OSS Comics #15: BSD Unix, Part 5 – Bringing TCP/IP to BSD

https://fosscomics.com/posts/15.%20BSD%20Unix%20Part%205%20-%20The%20Development%20of%20TCP-IP/
1•joonehur•12m ago•0 comments

Paradigm Puzzles

https://www.paradigm.xyz/puzzles
1•aberatiu•12m ago•0 comments

Show HN: Static recompiler that runs Windows x64 on Apple Silicon

https://github.com/Sahilg93/arm64-recompiler
1•Sahilg948•12m ago•0 comments

Lunar Module – a beginner Python editor

https://lunar-module.pages.dev
1•SLepyDev•14m ago•0 comments

Squeezing Java's MemorySegment

https://hannomalie.github.io/posts/squeezing-java-memorysegment.html
1•ejboy•17m ago•0 comments

Do House members' stock trades beat the market? A test of 8,900 trades

https://arkanumdata.com/research/house-trades
1•Bluestein•17m ago•0 comments

Ask HN: ChatGPT broken, is it just me?

2•torben-friis•18m ago•1 comments

No Free Lunch, No Free Rollback: Where Agents Need Engineers

https://dorcohen.dev/posts/no-free-lunch-no-free-rollback/
1•dibidee•20m ago•0 comments

A live service duress prototype

https://github.com/Ymsniper/vault-share
1•Ymsniper•20m ago•0 comments

Handwriting, as a Font

https://ductus.sorenblank.com
2•coinfused•21m ago•0 comments

ULA suffers first total mission failure with loss of Vulcan rocket carrying 40 A

https://spaceflightnow.com/2026/11/15/ula-suffers-first-total-mission-failure-with-loss-of-vulcan...
2•bookmtn•22m ago•0 comments

DeepSeek Chat Demo: A static chat app powered by the DeepSeek API

https://github.com/deepseek-ai/chat-demo
1•ArmandoAP•22m ago•0 comments

Show HN: Gami.Fied – Open-source, self-hosted gamification engine (AGPL-3.0)

https://gami.fied.cc/
1•ronak0020•23m ago•0 comments

Parents pay $75k for Alpha's AI school. Half of its students missed math target

https://fortune.com/2026/11/14/alpha-school-ai-students-tuition-learning-goals/
5•vrganj•23m ago•0 comments

ULA Vulcan suffers anomaly after return-to-flight launch from Cape Canaveral

https://www.floridatoday.com/story/tech/science/space/2026/11/15/ula-vulcan-rocket-suffers-anomal...
2•bookmtn•24m ago•0 comments

First pre-2020 long-form writing detected as 100% AI by Pangram

https://twitter.com/max_spero_/status/2122032840204226687
1•signorovitch•25m ago•0 comments

Show HN: NotificationNanny

https://github.com/chessper53/NotificationNanny
1•chessper53•28m ago•0 comments

Go and Dart Break into Tiobe Index Top

https://www.i-programmer.info/news/98-languages/19274-go-and-dart-break-into-tiobe-index.html
1•SockThief•29m ago•0 comments

Show HN: DeclineKit – Open-source failed payment recovery for Stripe

https://github.com/jmcbca04/declinekit
1•jmcbca04•30m ago•0 comments

Driving a Tesla Model 3 with a Nintendo Switch 2

https://cancommander.com/switch-2-tesla/
1•denysvitali•32m ago•0 comments