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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!

Formally Verifying PBS Kids with Lean4

https://www.shadaj.me/writing/cyberchase-lean
1•shadaj•2m ago•0 comments

Offosm: OSM that you can access while you're offline

https://github.com/altilunium/offosm
1•altilunium•4m ago•0 comments

The Internet's Latest Lie: Moltbook

https://startupfortune.com/the-internets-latest-lie-moltbook-has-no-autonomous-ai-agents-only-hum...
1•lu5t•5m ago•0 comments

Reimplementing Tor from Scratch for a Single-Hop Proxy

https://foxmoss.com/blog/kurrat/
1•foxmoss•5m ago•0 comments

A premature software standard has led to billions in losses

https://hugo0.com/blog/how-erc20-held-back-blockchain-payments-a-decade
1•montenegrohugo•5m ago•1 comments

Intro to Cstml (Or: XML Meets JSON)

https://docs.bablr.org/guides/cstml/
1•todsacerdoti•6m ago•0 comments

The Dependency Layer in Digital Sovereignty

https://nesbitt.io/2026/01/28/the-dependency-layer-in-digital-sovereignty.html
1•speckx•6m ago•0 comments

Valued at 800M after less than two years,Vega eyes the path blazed by Wiz

https://www.calcalistech.com/ctechnews/article/sjs00wc2ubx
1•myth_drannon•6m ago•0 comments

Hybrid pricing is the default now – here's the data

https://www.solvimon.com/blog/hybrid-pricing-is-the-default-now-heres-the-data
1•arnon•7m ago•0 comments

Why software stocks are getting pummeled

https://www.economist.com/business/2026/02/01/why-software-stocks-are-getting-pummelled
2•andsoitis•8m ago•0 comments

A creator's bill of rights for the AI era

https://smmall.cloud/blog/creators-bill-of-rights-for-the-ai-era
1•a_band•9m ago•0 comments

Ask HN: Why not have a subreddit where all voting is done by a single AI?

2•amichail•13m ago•3 comments

I'm a wanted criminal in Italy. Well, maybe. Probably not

https://82mhz.net/posts/2026/01/i-m-a-wanted-criminal-in-italy-well-maybe-probably-not/
1•speckx•14m ago•0 comments

Show HN: A free and open source SSH client for iOS

https://github.com/neon443/ShhShell
1•neon443•14m ago•0 comments

Two weeks ago I shared Pdfwithlove in browser PDF toolkit with no uploads

https://pdfwithlove.netlify.app/#all-tools
1•pratik227•15m ago•1 comments

Show HN: Weather Haiku – AI-generated poetry for any location's current weather

https://weatherhaiku.cc
2•minor_drizzle•17m ago•1 comments

The Garbage PC

https://ounapuu.ee/posts/2026/02/02/garbage-time/
2•celsoazevedo•20m ago•0 comments

Show HN: Shoulditrustit.com – a simple, early alternative to Trustpilot

https://www.shouldItrustIt.com
1•franbetteo•20m ago•0 comments

How to Unabstract an Abstraction

https://www.jakeworth.com/posts/how-to-unabstract-an-abstraction/
1•jwworth•21m ago•0 comments

Tim Cook sold Apple's soul

https://www.loopwerk.io/articles/2026/tim-cook-sold-apples-soul/
6•kjmr•22m ago•0 comments

Sand heat storage with circulating sand reduces energy costs and CO2 emissions

https://www.heise.de/en/news/Sand-heat-storage-with-circulating-sand-reduces-energy-costs-and-CO-...
1•westurner•22m ago•0 comments

OpenClaw feels Scary now!

https://moithub.com/
2•javantanna•22m ago•0 comments

Bay Area woman loses $176K after accepting remote job she thought was Facebook [video]

https://www.youtube.com/watch?v=u4n4pWCGovI
1•mgh2•23m ago•0 comments

Schedule Across >2 Timezones

https://greatletsmeet.com/
1•marctuinier•24m ago•0 comments

Big tech is trading headcount for GPU capex

https://www.augmentedswe.com/p/tech-job-market-is-brutal
2•wordsaboutcode•25m ago•0 comments

Turn your workflow screen recording into instructional step-by-step guide

https://video2docs.com/
1•angelina200•26m ago•1 comments

Moltbook Anatomy: AI Agents Social Network Exploration

https://altsoph.substack.com/p/moltbook-anatomy-ai-agents-social
1•kirushik•26m ago•0 comments

Explicit Resource Management in JavaScript

https://allthingssmitty.com/2026/02/02/explicit-resource-management-in-javascript/
2•AllThingsSmitty•26m ago•1 comments

Why won't my team use agents? Meditations on AI agent adoption

https://12gramsofcarbon.com/p/why-wont-my-team-use-agents
1•andyjohnson0•27m ago•0 comments

Living Stingy: Why Linux Hasn't Supplanted Windows

http://livingstingy.blogspot.com/2026/02/why-linux-hasnt-supplanted-windows.html
1•speckx•28m ago•0 comments