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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•8mo 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!

SearchGuard: How Google detects bots and what the SerpAPI lawsuit reveals

https://searchengineland.com/inside-google-searchguard-467676
1•sans_souse•47s ago•0 comments

AlgoSync – A social space for builders to share the "real" tech journey

https://www.algosyncverse.com/
1•lyquochao84•1m ago•1 comments

Netflix Ruined Korean Dramas Forever [video]

https://www.youtube.com/watch?v=p1_j6izmEX4
1•danhite•2m ago•0 comments

Opensync

https://github.com/waynesutton/opensync
1•handfuloflight•2m ago•0 comments

Bank of England 'must plan for a financial crisis triggered by aliens'

https://www.msn.com/en-gb/news/uknews/bank-of-england-must-plan-for-a-financial-crisis-triggered-...
2•matthewsinclair•12m ago•2 comments

EnergyNet Explained: Internetification of Energy Distribution

https://arxiv.org/abs/2509.08152
1•zekrioca•13m ago•0 comments

Scaling long-running autonomous coding

https://simonwillison.net/2026/Jan/19/scaling-long-running-autonomous-coding/
1•srameshc•14m ago•0 comments

Ask HN: Do Hackathons Still Matter in 2026?

2•rafaepta•16m ago•0 comments

React Native Windows v0.81

https://devblogs.microsoft.com/react-native/%f0%9f%9a%80react-native-windows-v0-81-is-here/
1•soheilpro•16m ago•0 comments

AI Is a Horse (2024)

https://kconner.com/2024/08/02/ai-is-a-horse.html
1•zdw•16m ago•0 comments

SolarPunk: Autonomous redistribution system with anti-corporate code

https://github.com/MeekoThaRaccoon/SolarPunk
1•RealSolarPunk•17m ago•1 comments

Ygrep: Fast, local, indexed code search tool optimized for AI coding assistants

https://github.com/yetidevworks/ygrep
1•kristianp•21m ago•0 comments

How to Kill a Fish

https://www.newyorker.com/magazine/2026/01/26/how-to-kill-a-fish
1•mitchbob•23m ago•1 comments

Show HN: NPM install a WASM based Linux VM for your agents

https://github.com/deepclause/agentvm
1•schmuhblaster•25m ago•1 comments

We've Turned Off AI‑Assisted Answers

https://noai.duckduckgo.com/
4•doener•27m ago•1 comments

Volvo EX60: First Gemini-Powered EV vs. BMW iX3 Alexa+

https://www.techradar.com/vehicle-tech/dash-cams/the-worlds-first-gemini-powered-ev-lands-this-we...
2•gfortaine•28m ago•2 comments

London Eye architect proposes 14-mile tidal power station off Somerset coast

https://www.theguardian.com/environment/2025/dec/27/london-eye-architect-proposes-14-mile-tidal-p...
2•PaulHoule•32m ago•0 comments

Prisma-sql – Direct SQL generation from Prisma queries

https://www.npmjs.com/package/prisma-sql
1•multipliedtwice•33m ago•1 comments

Why Walmart still doesn't support Apple Pay

https://9to5mac.com/2026/01/18/heres-why-walmart-still-doesnt-support-apple-pay/
4•CharlesW•33m ago•1 comments

ClovaLink: Enterprise file management without the enterprise price tag

https://github.com/ClovaLink/ClovaLink
1•thunderbong•36m ago•0 comments

Reticulum, a secure and anonymous mesh networking stack

https://github.com/markqvist/Reticulum
7•brogu•37m ago•2 comments

Intelligent Wearable for Dysarthria Recovery Post-Stroke

https://www.nature.com/articles/s41467-025-68228-9
2•gnabgib•37m ago•0 comments

A lightweight orchestrator for running multiple Claude Code agents

https://github.com/dlorenc/multiclaude
1•mooreds•38m ago•0 comments

Show HN: Everything Is a Spectrogram

https://everything-is-a-spectrogram.vercel.app/
1•phantomshelby•38m ago•0 comments

How worried should I be about running LLM code on my machine?

1•scoofy•39m ago•3 comments

Built 1,300 free calculators that run client-side

https://practicalwebtools.com
2•cobrapi•39m ago•1 comments

Show HN: Chat app with Hubot – hubot-chat

https://github.com/hubot-friends/hubot-chat
1•joeyguerra•43m ago•0 comments

Install.md: Innovation or Reinventing Gherkin?

https://docsalot.dev/blog/install-md-vs-getting-started-guides
2•fazkan•47m ago•0 comments

From Old English to Modern American English in One Monologue [video]

https://www.youtube.com/watch?v=842OX2_vCic
2•Teever•49m ago•0 comments

Tell HN: The current top story on R/news is LLM slop

https://old.reddit.com/r/news/
6•perihelions•49m ago•3 comments