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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!

Show HN: Jet – Another Programming Language

https://jet-lang.com
1•jgeorgesYC•56s ago•0 comments

Show HN: AI Watermark Scrambler, blur statistical LLM text watermarks locally

https://github.com/novatechflow/ai-watermark-scrambler
1•2pk03•1m ago•0 comments

Unintended Disclosure Through Revision Traces of LLM Deliverables

https://arxiv.org/abs/2609.35408
1•hasley•2m ago•1 comments

Zod maintainer refuses v3 CVE backport because advisory is agent-written

https://github.com/colinhacks/zod/issues/6653
1•hek2sch•3m ago•0 comments

Why is it so expensive to send an email?

https://evancz.dev/why-is-it-so-expensive-to-send-an-email
1•wheatBread•3m ago•0 comments

Police pull over two men riding an electric couch down the street

https://electrek.co/2026/10/24/police-pull-over-two-men-riding-an-electric-couch-down-the-street/
2•cisc•6m ago•0 comments

The AI Agents Trying to Be Real-Life Journalists

https://www.wired.com/story/ai-agents-are-trying-to-be-journalists-now/
1•joozio•7m ago•0 comments

Why I made Wyvern, and why I chose C++ over Rust, Zig or Golang

https://wyvern.at/en/2026/10/25/why-i-made-wyvern-and-why-i-chose-c-over-rust-zig-or-golang/
2•thel0ner•8m ago•0 comments

Meta Plans to Raise Up to $95B for AI Push

https://www.wsj.com/tech/ai/meta-plans-35-billion-stock-offering-to-power-ai-buildout-eyes-95-bil...
1•thm•8m ago•0 comments

Nobody Could Say Which AI Agent Did It

https://www.anuclei.com/blog/nobody-could-say-which-agent-did-it
1•jequals5•8m ago•0 comments

Grok releases the first seven minutes of its AI-generated 'Odyssey'

https://techcrunch.com/2026/10/25/grok-releases-the-first-seven-minutes-of-its-ai-generated-odyssey/
1•theanonymousone•8m ago•0 comments

Building Salesforce Part Two

https://buildingslack.com/salesforce-part-two/
1•dublinben•8m ago•0 comments

Ask HN: Lean4 code for Modularity of elliptic curves ... ?

1•sunshinePeanut•10m ago•0 comments

The size of the oil and gas market drives adoption of synthetic fuel production

https://terraformindustries.wordpress.com/2026/06/16/the-enormous-size-of-the-oil-and-gas-market-...
1•surprisetalk•10m ago•0 comments

Show HN: The G = 9 Gate (Dark Matter) a New Theoretical Hypothesis

https://figshare.com/articles/preprint/The_G_9_Gate_A_new_theoretical_hypotesis_in_Fermion-Boson_...
1•kisnorbert•10m ago•0 comments

Mellon Technology

https://mellontechnology.si/
1•kc0bfv•13m ago•1 comments

Show HN: Rostr – Give your agents names, remember who's working on what

https://getrostr.sh/
1•piazz•14m ago•1 comments

Show HN: Render your Windows desktop GUI on the NPU

https://github.com/labscommunity/npu-render
1•jackwsmth•14m ago•0 comments

Lula Vows to Regulate Social Media Giants

https://www.riotimesonline.com/lula-victory-speech-social-media-regulation-2026/
2•robtherobber•16m ago•2 comments

Tesco replacing VMware with Proxmox in its stores and on the edge

https://www.theregister.com/virtualization/2026/10/26/tesco-replacing-vmware-with-proxmox-in-its-...
3•Betelbuddy•18m ago•1 comments

'Donnie Darko' Oral History: A Mind-Twisting Cult Classic Turns 25

https://www.nytimes.com/2026/10/25/nyregion/30-year-old-angst.html
1•mistersquid•19m ago•1 comments

Anthropic's Claude AI model accessed Georgia voter data in US

https://www.theguardian.com/technology/2026/oct/26/anthropics-claude-ai-model-accessed-georgia-vo...
2•chrisjj•21m ago•0 comments

Show HN: Ultraviolet – Observability when your telemetry can't leave

https://demo.uvobservability.com/
1•dbuckman•25m ago•0 comments

The First Agentic Experience Operating System

https://github.com/vahmoh/Veda
1•john3se•26m ago•1 comments

Fast Set Operations Using Treaps (1998) [pdf]

https://www.cs.cmu.edu/~scandal/papers/treaps-spaa98.pdf
2•vismit2000•29m ago•0 comments

It's a trap: testing coding agents on a language with surprising semantics

https://blog.csongor.co.uk/familiarity-trap/
1•kcsongor•29m ago•0 comments

Show HN: Calltags, an Android dialer for people without contact lists

https://github.com/andunieee/calltags
2•andunie•29m ago•0 comments

AI Scope Creep and Productivity

https://ayende.com/blog/204195-a/ai-scope-creep-productivity
2•sebazzz•30m ago•0 comments

Show HN: Deploy-usecraftapps, self host all craft apps easily

1•liyu1981au•37m ago•0 comments

Lost in the post: Subpostmasters could miss out on redress

https://www.computerweekly.com/news/366652756/Lost-in-the-Post-Subpostmasters-could-miss-out-on-r...
2•latein•40m ago•0 comments