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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!

Creating Obsidian Knowledge Bases

https://desktopcommander.app/blog/2026/01/14/create-and-manage-your-obsidian-knowledge-base-with-ai/
1•rafaepta•1m ago•0 comments

Vm0

https://github.com/vm0-ai/vm0
1•handfuloflight•2m ago•0 comments

Show HN: Beni AI – video call with your AI companion

https://app.thebeni.ai/login
1•chaeeunlee9611•2m ago•0 comments

Scripts to simplify setting up a Windows developer box

https://github.com/microsoft/windows-dev-box-setup-scripts
1•thunderbong•3m ago•0 comments

Show HN: Free observability tool to track your REST and LLM calls

https://tracker.pathwave.io/docs
1•felipe-pathwave•4m ago•0 comments

Furiosa: 3.5x efficiency over H100s

https://furiosa.ai/blog/introducing-rngd-server-efficient-ai-inference-at-data-center-scale
3•written-beyond•6m ago•0 comments

Beni AI – Real-time face-to-face AI companion that talks like a real person

https://thebeni.ai/
1•chaeeunlee9611•7m ago•1 comments

Writing Anteforth, a Forth-Like in Spark

https://pyjarrett.github.io/2026/01/13/anteforth.html
1•todsacerdoti•8m ago•0 comments

Show HN: AnotherResumeBuilder – Yeah just another one, check it out

https://arb.manhhung.app
1•mhpro15•11m ago•0 comments

X to stop Grok AI from undressing images of real people after backlash

https://www.bbc.co.uk/news/articles/ce8gz8g2qnlo
4•mellosouls•12m ago•0 comments

David Hockney says moving Bayeux Tapestry to UK is 'madness'

https://www.bbc.co.uk/news/articles/c89qendv88yo
2•mellosouls•13m ago•0 comments

Introducing tempo

https://github.com/galaxy-io/tempo
1•ikswolzok•14m ago•0 comments

Ford Suspends Factory Worker for Heckling Trump

https://www.wsj.com/politics/policy/ford-suspends-factory-worker-for-heckling-trump-fa6d59b1
4•JumpCrisscross•15m ago•0 comments

California Attorney General Investigating XAI over Grok's Deepfakes

https://www.wsj.com/tech/ai/california-attorney-general-investigating-xai-over-groks-deepfakes-3d...
3•JumpCrisscross•15m ago•0 comments

The three aggregators worth building as software margins compress

https://www.networkspirits.com/blog/state-of-the-world/
1•0xjepsen•22m ago•0 comments

New Safari developer tools provide insight into CSS Grid Lanes

https://webkit.org/blog/17746/new-safari-developer-tools-provide-insight-into-css-grid-lanes/
1•feross•24m ago•0 comments

Morphe is an Android app modification tool

https://github.com/morpheapp
1•yreew•26m ago•1 comments

Reelive.ai – Making Google's AI Accessible to Everyone

1•danny_miller•29m ago•1 comments

Mo' Power is Mo' Betta': Superpowers for Claude Code, Codex, and OpenCode

https://github.com/obra/superpowers
1•bigwheels•31m ago•0 comments

I've been using a little shorthand for my notes

https://www.twotalk.org
2•barneymatthews•33m ago•2 comments

Trump Imposes Limited Tariffs on Foreign Semiconductors

https://www.nytimes.com/2026/01/14/business/economy/trump-chips-tariffs.html
5•karp773•33m ago•0 comments

Wired: "Tech Workers Are Condemning ICE Even as Their CEOs Stay Quiet"

https://www.wired.com/story/backlash-against-ice-policing-tactics-grows-in-silicon-valley/
9•theworkeragency•38m ago•0 comments

Meta Compute, the Meta-OpenAI Battle, the Reality Labs Sacrifice

https://stratechery.com/2026/meta-compute-the-meta-openai-battle-the-reality-labs-sacrifice/
1•feross•38m ago•0 comments

Dun & Bradstreet Agrees to Pay $5.7M to Resolve Alleged Violations of FTC Order

https://www.ftc.gov/news-events/news/press-releases/2025/09/dun-bradstreet-agrees-pay-57-million-...
2•gnabgib•44m ago•0 comments

Claude Fixed My Printer

https://pastebin.com/hLbE84vy
1•MortenK•46m ago•0 comments

Computational Zen, wild fox koan

https://jimiwen.substack.com/p/the-axiom-of-dissipation
2•jimiwen•49m ago•0 comments

Defense Verification Frameworks for a Hypercapable World

https://aiprospects.substack.com/p/options-for-a-hypercapable-world
2•transpute•50m ago•0 comments

Dangerous mode is all you need

https://schappi.com/blog/dangerous-mode-is-all-you-need
1•schappim•52m ago•0 comments

Anthropic Explicitly Blocking OpenCode

https://gist.github.com/R44VC0RP/bd391f6a23185c0fed6c6b5fb2bac50e
52•ryanvogel•55m ago•23 comments

The Climate Question That Economists Cannot Answer

https://www.theatlantic.com/science/2026/01/climate-economics/685609/
1•paulpauper•56m ago•1 comments