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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•9mo 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!

Proton-Proton Fusion

http://www.hyperphysics.phy-astr.gsu.edu/hbase/Astro/procyc.html#c4
1•joebig•1m ago•0 comments

AI cracks Roman-era board game

https://phys.org/news/2026-02-ai-roman-era-board-game.html
1•pseudolus•2m ago•0 comments

The paradox of shipping more while coding less

https://www.jerpint.io/blog/2026-03-01-ai-coding-agents/
1•jerpint•3m ago•0 comments

200k living human neurons' on a microchip demonstrated playing Doom

https://www.tomshardware.com/tech-industry/artificial-intelligence/200-000-living-human-neurons-o...
1•giuliomagnifico•4m ago•0 comments

DystopiaBench – Measuring AI's willingness to ruin humanity

https://dystopiabench.com/
1•mateianghel•5m ago•1 comments

Internals of a Key-Value Store Built on SQLite's B-Tree Engine

https://hash-anu.github.io/snkv/
1•swaminarayan•6m ago•0 comments

Is the passion for taxonomy in danger of dying out?

https://www.theguardian.com/environment/2026/mar/02/identify-species-taxonomists-crisis-art-borkent
1•YeGoblynQueenne•6m ago•0 comments

Show HN: Seedance.fast – Early access to ByteDance's Seedance 2.0 model

https://seedance.fast/
1•thenextechtrade•6m ago•0 comments

Perspective Server

https://github.com/Techopolis/Perspective-Server
1•blerb795•9m ago•1 comments

Show HN: LLM Evaluator for "Who is hiring" threads

https://github.com/exlee/hn-jobs-evaluator
1•xlii•9m ago•0 comments

Show HN: Open-Jet – self-hosted Agentic TUI for air-gapped Jetsons

https://www.openjet.dev/
1•lforster•11m ago•0 comments

Show HN: MulMarket – CS2 Skin Market Analytics Desktop App

https://mulmarket.store/
1•Manpi•11m ago•0 comments

Which programming languages pay the most?

https://stribny.name/posts/salaries-by-language/
1•seansh•12m ago•0 comments

1983 Austin Maestro 1600 – Talking Dashboard [video]

https://www.youtube.com/watch?v=gH8orI8jdCA
1•austinallegro•14m ago•0 comments

Robert F Kennedy Jr: 1 year of failure

https://www.thelancet.com/action/showPdf?pii=S0140-6736%2826%2900414-9
2•andsoitis•17m ago•0 comments

Show HN: GitAgent – Clone a repo, get an AI agent – Claude Code / OpenClaw

https://www.gitagent.sh/
1•Shreyaskapale•18m ago•0 comments

Show HN: Ragtoolina – MCP tool that adds codebase RAG to AI coding agents

https://www.ragtoolina.com
1•slack812•21m ago•0 comments

Omarchy on macOS: AeroSpace and Karabiner Setup Guide

https://danieltenner.com/omarchy-on-macos-aerospace-karabiner-setup-guide-for-claude-code/
1•tosh•22m ago•0 comments

Libxml2 Enterprise Edition (AGPL, from the previous maintainer)

https://codeberg.org/nwellnhof/libxml2-ee
2•todsacerdoti•23m ago•0 comments

Show HN: Claw – Let your AI agent operate any machine as if it were local

https://github.com/opsyhq/claw
1•d36ugger•24m ago•0 comments

Electricity 2026

https://www.iea.org/reports/electricity-2026
3•simonebrunozzi•41m ago•0 comments

Show HN: Prismle – Convert your resume into a business page

https://prismle.com/
1•b1tsoup•44m ago•1 comments

Show HN: GitDelivr: A free CDN for Git clones built on Cloudflare Workers and R2

https://gitdelivr.net/
1•emirb•44m ago•3 comments

Change Intent Records: The Missing Artifact in AI-Assisted Development

https://blog.bryanl.dev/posts/change-intent-records/
1•handfuloflight•45m ago•0 comments

Ask HN: Billions of dollars in funding, but what's changed for robotics?

7•ajax33•47m ago•0 comments

Building a Live BGP Map

https://kmcd.dev/posts/live-internet-map/
1•ingve•48m ago•0 comments

Show HN: Markwright

https://www.aloneguid.uk/projects/mw/
1•aloneguid•54m ago•0 comments

RAG vs. Skill vs. MCP vs. RLM

https://blog.alexewerlof.com/p/rag-vs-skill-vs-mcp-vs-rlm
3•weltview•56m ago•0 comments

The Next Horses

https://betterthanrandom.substack.com/p/the-next-horses
5•weltview•57m ago•1 comments

IntelligenceX – Zero-trust code reviews, desktop chat, tool packs

https://intelligencex.dev
2•themadboy•57m ago•0 comments