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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!

BrandOS – An AI Company Brain for Autonomous Marketing

https://www.getbrandos.site/
1•absmugz•43s ago•0 comments

Sandboxes that lie about their secrets

https://microsandbox.dev/blog/sandboxes-that-lie-about-their-secrets
1•makeboss•46s ago•0 comments

One Character in an HTTP Header Just Bypassed Authentication on 325M Servers

https://medium.com/@tbelbek/one-character-in-an-http-header-just-bypassed-authentication-on-325-m...
1•rdstrtwlkr•1m ago•0 comments

BNF Was Here

http://grammarware.net/writes/#BNF-WAS-HERE2012
1•t-3•1m ago•0 comments

Pa-RISC Processors from Pa-7000 to Pa-8900

https://www.openpa.net/pa-risc_processors.html
1•naves•1m ago•0 comments

Steven Heller's Font of the Month: Brutal Types

https://ilovetypography.com/2026/06/01/steven-hellers-font-of-the-month-brutal-types/
1•jjgreen•1m ago•0 comments

Storj announces new pricing changes

https://www.storj.io/pricing/change-faqs
1•Shank•3m ago•0 comments

Show HN: OpenMerch – Turning software into atomic jobs

1•nordic_lion•10m ago•0 comments

Meta whistleblower's lawyer says he too is prevented from promoting her book

https://www.theguardian.com/technology/2026/jun/01/meta-whistleblower-lawyer-prevented-promoting-...
1•lyoncy•13m ago•0 comments

Review: Anabasis, by Xenophon

https://www.thepsmiths.com/p/review-anabasis-by-xenophon
1•jger15•13m ago•0 comments

How People Are Using AI in 2026

https://hbr.org/2026/06/how-people-are-really-using-ai-in-2026
1•geox•14m ago•0 comments

Readest: Free, open-source, multi-platform ePub and PDF reader

https://readest.com/
2•cl3misch•15m ago•0 comments

Darvy – a voice-first assistant we built for my blind brother

https://darvy.ai/
2•AmeenDarwish•16m ago•0 comments

We reversed the service marketplace model so providers bid on customers

https://www.ulobo.com
1•ulobo•16m ago•1 comments

Bond Graph

https://en.wikipedia.org/wiki/Bond_graph
2•num42•21m ago•0 comments

We reduced core unit boot time from hours to minutes

https://blog.cloudflare.com/optimizing-core-unit-boot-time/
1•eldridgea•21m ago•0 comments

Welcome to Uruky, AlternativeTo's new official partner

https://alternativeto.net/news/2026/5/welcome-to-uruky-alternativeto-s-new-official-partner-/
2•BrunoBernardino•21m ago•1 comments

Florida AG sues OpenAI, seeks to hold CEO Altman personally liable for harms

https://www.cnbc.com/2026/06/01/florida-ag-open-ai-altman-lawsuit.html
2•onlyrealcuzzo•25m ago•0 comments

Install web apps with the new HTML install element

https://developer.chrome.com/blog/install-element-ot
4•pentagrama•26m ago•1 comments

Security Specialist Warns of Bizav Cyberattack Threats

https://www.ainonline.com/aviation-news/business-aviation/2026-06-01/security-specialist-warns-bi...
1•stoicanalyst•28m ago•0 comments

Animorphs: A Great Series Turns 30

https://compostedbooksreview.substack.com/p/animorphs-the-greatest-achievement
2•rmdmphilosopher•29m ago•0 comments

PithTrain – a compact, agent-native MoE training system

https://blog.mlc.ai/2026/06/01/pithtrain-compact-agent-native-moe-training-system
3•ruihangl•30m ago•0 comments

Making Debian or Fedora persistent live images

https://sigwait.org/~alex/blog/2026/05/28/smdBC8.html
2•henry_flower•31m ago•0 comments

Autopoiesis (from Greek αὐτO- (auto) 'self' and ποίησις (poiesis) 'creation')

https://en.wikipedia.org/wiki/Autopoiesis
2•jackbravo•31m ago•0 comments

Pokémon TCG: 30th Celebration – Available September 16 [video]

https://www.youtube.com/watch?v=05w9UVH6zoQ
2•HelloUsername•32m ago•0 comments

How do computers work? (from scratch, no prior knowledge needed) [12 hours long] [video]

https://www.youtube.com/watch?v=rl0jkP9kOMw
1•Imustaskforhelp•32m ago•0 comments

United 767 diverted mid-Atlantic after teenager named Bluetooth speaker BOMB

https://www.airtraveler.club/news/united-767-diverted-bluetooth-bomb-passengers-stranded/
2•raffael_de•32m ago•1 comments

Show HN: AI Sandbox based on FEP now online – no LLM

https://aic-ai-lab.site/login
1•luzifer333•33m ago•0 comments

WordPress malware campaign hides payloads in Steam profiles

https://www.bleepingcomputer.com/news/security/wordpress-malware-campaign-hides-payloads-in-steam...
1•rndsignals•35m ago•0 comments

Apple M1 Chip Deep-Dive [video]

https://www.youtube.com/watch?v=mHEWMiHgyU8
1•zdw•35m ago•0 comments