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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•10mo 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!

The Indonesian Government Has Blocked Wikimedia Commons

https://xcancel.com/idwiki/status/2036695958600479123
1•exploraz•48s ago•0 comments

Is Taste the One Thing A.I. Can't Replace?

https://www.nytimes.com/2026/03/22/style/ai-tools-taste.html
1•mitchbob•52s ago•1 comments

The AI Future We Build

https://substack.com/@gaspland/note/p-190905025
1•meany•3m ago•0 comments

I built an open-source SDK to hide blockchain complexity from app developers

https://starkzap.io/
1•starkience•4m ago•0 comments

Ask HN: How do you feel when your coding assistant loses context?

2•noduerme•5m ago•1 comments

What Will Future Programming Languages Look Like?

https://functiondispatch.substack.com/p/what-will-future-programming-languages
1•fixedprog•7m ago•0 comments

Mailbox.org Currently Down

https://status.mailbox.org
1•twtran•8m ago•1 comments

Sports Betting Is Everywhere, Especially on Credit Reports

https://libertystreeteconomics.newyorkfed.org/2026/03/sports-betting-is-everywhere-especially-on-...
1•m-hodges•8m ago•0 comments

A calorie counting app built with Preact

https://github.com/caloryapp/caloryapp.github.io
1•GonzaloCV•9m ago•0 comments

Samsung still glued to its bad habits with Galaxy S26 Ultra

https://www.theregister.com/2026/03/25/galaxy_s26_ultra_ifixit/
1•Brajeshwar•10m ago•0 comments

The scammer, the fixer and the cop: Inside LA's world of millionaire crypto kids

https://www.latimes.com/california/story/2026-03-24/los-angeles-crypto-kids-trial
1•koolba•11m ago•0 comments

The Resonance Web – a living network engine where death strengthens the web

https://github.com/Dosage2AG/resonance-web
1•Dosage2ag•11m ago•0 comments

OpenAI shutters AI video generator Sora in abrupt announcement

https://www.theguardian.com/technology/2026/mar/24/openai-ai-video-sora
1•beardyw•12m ago•0 comments

Meta Targets $9T Valuation with New Executive Incentive Program

https://www.wsj.com/tech/meta-targets-9-trillion-valuation-with-new-executive-incentive-program-6...
1•pera•12m ago•0 comments

AI Daemons: A new category of AI for engineering teams

https://twitter.com/rileytomasek/status/2035042454483714317
1•mrbbk•14m ago•0 comments

Show HN: Kide – A CMS built inside Astro 6

https://github.com/mhernesniemi/kide-cms
1•zernobilly•14m ago•0 comments

Tell HN: Slow Down

3•jacquesm•15m ago•0 comments

Johnston, surrounding counties to receive broadband funding

https://www.johnstoniannews.com/news/johnston-surrounding-counties-to-receive-broadband-funding-b...
1•01-_-•16m ago•0 comments

Show HN: Refrain – Generate browser automations with AI, replay them without AI

https://therefrain.ai/
2•timakin•17m ago•0 comments

Agentic commerce runs on truth and context

https://www.technologyreview.com/2026/03/25/1134516/agentic-commerce-runs-on-truth-and-context/
1•joozio•17m ago•0 comments

Quantum Computing Is Today's Manhattan Project

https://www.wsj.com/opinion/quantum-computing-is-todays-manhattan-project-9746be3b
1•mathgenius•20m ago•0 comments

Open source isn't a tip jar – it's time to charge for access

https://www.theregister.com/2026/03/25/open_source_bill_opinion/
3•beardyw•20m ago•0 comments

Ask HN: Early stage Founders – How do you acquire early beta users?

1•KhushaliT•20m ago•0 comments

Losing my email account locked me out of my Digital Life

https://appsec.space/posts/email-lockout/
1•_zeta•20m ago•0 comments

Show HN: AgentPass – The credit check for AI agents

https://agentpass.co.uk
1•AskCarX•23m ago•0 comments

Ask HN: What are some ways you have limited AI slop

1•grahammccain•23m ago•0 comments

Spent too much on ads, so built an AI that makes converting product videos

https://instant-ugc.com/?red=abdelk
1•Locas•24m ago•2 comments

Native macOS/iOS eBook Reader

https://getbookshelves.app
1•carlosjobim•24m ago•1 comments

Rust reflection and a multi-array list

https://fnordig.de/2026/03/25/rust-reflection-and-a-multi-array-list/
1•hasheddan•25m ago•0 comments

VTAM: Video-Tactile-Action Models for Complex Physical Interaction Beyond VLAs

https://arxiv.org/abs/2603.23481
1•chrsw•25m ago•0 comments