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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!

Botfluencerz – a social network where every user is an autonomous AI agent

https://www.botfluencerz.com/
1•unforgivin•3m ago•0 comments

Biohacker reveals he has incurable disease amid mission to 'defeat death'

https://www.the-independent.com/life-style/bryan-johnson-incurable-disease-diagnosis-b3009758.html
1•ceejayoz•3m ago•0 comments

Schizo founder story (terrorist to tech exit)

https://peteryoung.me/the-terrorists-guide-to-retiring-young/
1•optimized•3m ago•0 comments

Hz gamma light and sound for Alzheimer's: what the trial data shows

https://medium.com/@6thMind/40-hz-gamma-light-and-sound-for-alzheimers-what-the-trial-data-actual...
1•smanuel•4m ago•0 comments

Anthropic hid a tracker in Claude Code to flag Chinese users

https://arstechnica.com/tech-policy/2026/07/anthropic-outed-for-claude-tracker-that-secretly-moni...
2•logickkk1•5m ago•0 comments

A global workspace in language models

https://www.anthropic.com/research/global-workspace
1•in-silico•7m ago•0 comments

A Great University Undermines Its Mission

https://www.nytimes.com/2026/07/06/opinion/university-california-sat-testing-admissions.html
1•7402•7m ago•0 comments

World's oldest Homo sapiens fossils found in Morocco (2017)

https://www.science.org/content/article/world-s-oldest-homo-sapiens-fossils-found-morocco
1•thunderbong•9m ago•1 comments

CO2 helps viruses stay alive longer in the air

https://www.statnews.com/2024/06/04/co2-ventilation-research-virus-airborne-life-haddrell-celebs/
1•fanf2•9m ago•0 comments

When privacy is a feature, not a compliance checkbox

https://vinewallapp.com/notes/when-privacy-is-a-feature-not-a-compliance-checkbox/
1•gcampos•10m ago•0 comments

Free Robot Labour – Marx, Automation, and the Future of AI

https://link.springer.com/book/10.1007/978-3-032-26782-5
1•necrodome•11m ago•0 comments

Is it common for devs to be confident in code but awkward in conversations?

https://apps.apple.com/us/app/openup-your-confidence-app/id6782175916
2•mr_aaryan•13m ago•2 comments

Microsoft cuts 4,800 jobs, many at Xbox in a 'reset' of its gaming division

https://apnews.com/article/xbox-layoffs-microsoft-sharma-5a8f712c531911089dee008b3bbb33c4
3•1vuio0pswjnm7•14m ago•0 comments

Pyforge-memory – three-tier memory for AI agents that works

https://github.com/forgedlogicdev/pyforge-memory
2•ForgedLogicdev•14m ago•0 comments

Show HN: Every "I am" statement in the Congressional Record

https://lucasigel.com/identities
1•lukeigel•15m ago•0 comments

Strategy sells $216M of Bitcoin as it abandons 'never sell' mantra

https://nypost.com/2026/07/06/business/michael-saylors-strategy-sells-216m-of-bitcoin-as-it-aband...
2•petethomas•15m ago•1 comments

Januscape: Guest-to-Host Escape in KVM/x86 [CVE-2026-53359]

https://github.com/V4bel/Januscape
2•Imustaskforhelp•16m ago•0 comments

BeEzrat HaShem Inc. Earns Candid Platinum Seal of Transparency for the 3rd Time

1•emmanol•17m ago•0 comments

Fable Built a 3D Model of Aristotle's Cognitive Architecture

https://conceptual-spaces.vercel.app
1•mikemangialardi•18m ago•0 comments

The Remarkably Human Samsung Unsubscribe Flow

https://knhash.in/human-samsung-unsubscribe-flow/
1•kn81198•18m ago•0 comments

We woz wrong about oil

https://www.economist.com/leaders/2026/07/02/we-woz-wrong-about-oil
1•1vuio0pswjnm7•18m ago•2 comments

Show HN: Nordstjernen Web Browser 1.0.18

3•roschdal•24m ago•2 comments

Egypt's New Delta Megaproject

https://meobserver.org/nutrition/2026/05/18/egypts-new-delta-megaproject-signals-strategic-shift-...
1•JumpCrisscross•24m ago•1 comments

Show HN: Record, replay, and improve AI agents in production

https://github.com/zenml-io/kitaru
1•htahir111•25m ago•0 comments

Windows telemetry used to track web activity, link VPN activity to source IP

https://www.tomshardware.com/software/windows-11-identifier-used-to-track-scattered-spider-perp-a...
3•m132•26m ago•1 comments

The difference between "today's task" and "accretive work"

https://pluralistic.net/2026/07/02/canonization/
3•mooreds•27m ago•0 comments

(NEW) Game engine built with AI (4x11Engine) as an experiment

https://github.com/rwusmm-dc/4x11Engine
1•rwusmm•27m ago•1 comments

Ask HN: What cool stuff have you all been using Fable 5 for?

2•Tsarp•27m ago•0 comments

American A.I. Companies Say Chinese Copycats Are Quickly Catching Up

https://www.nytimes.com/2026/07/06/technology/ai-distillation-china.html
2•petilon•28m ago•0 comments

Ona Judge

https://en.wikipedia.org/wiki/Ona_Judge
2•mooreds•28m ago•0 comments