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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: I track all 121k Skool communities to find community creator leads

https://www.skoolstats.com/
1•thomasjamesio•51s ago•0 comments

Show HN: Podway – your self-hosted apps, run by an AI admin

https://podway.io
1•velsoff•1m ago•0 comments

Mobile Tunnel: Giving AI agents control of Android to drive drones and IoT

https://sealgate.ai/blog/mobile-tunnel-agents-control-android-devices
2•76SlashDolphin•1m ago•0 comments

Show HN: What to Wear in NYC Today

https://wearing.nyc/
1•hammeiam•2m ago•0 comments

Nextflow Frontier posts 4 new top results on BioML-bench

https://nextflow.com/blog/introducing-nextflow-frontier/
1•emiller88•2m ago•0 comments

XWorm 7.4 C2 Panel Pre-Auth RCE Zero-Day (PoC) by Mootoo

https://github.com/mootoo11/xworm-7.4-RCE-PoC
1•mootoo11•4m ago•1 comments

San Francisco Created a Car-Free Oasis by the Sea–and It's Driving Locals Mad

https://www.wsj.com/lifestyle/travel/san-francisco-created-a-car-free-oasis-by-the-seaand-its-dri...
1•RestlessMind•5m ago•1 comments

Al-buddy-memory – score your agent's memory on provenance, not recall

https://albuddy.com/
1•flytomoon•5m ago•0 comments

PixelTells: Fingerprinting Rendering Operations in Canvas2D

https://yacinesellami.com/blog/pixeltells/
1•redrrx•5m ago•0 comments

What behaviors does a model learn in RL?

https://www.bluelightai.com/blog/training-model-behavior-diff/
1•epimono•5m ago•0 comments

Reconstructing a TypeScript bidirectional type checker

https://jaked.org/blog/2021-09-07-Reconstructing-TypeScript-part-0
1•fanf2•7m ago•0 comments

Cupertino.tech – A curated directory of Apple's SDKs, frameworks and tools

https://cupertino.tech
1•epaga•8m ago•0 comments

NetBSD may have found a new role: The AI-free FOSS OS

https://www.theregister.com/os-platforms/2026/10/13/netbsd-may-have-found-a-new-role-the-ai-free-...
1•jjgreen•9m ago•0 comments

Two-Stack Sliding-Window Aggregation

https://orlp.net/blog/two-stack-sliding-window-aggregation/
2•surprisetalk•9m ago•0 comments

Show HN: OneOver – V1 of my app's UI took a year, V3 took a weekend

https://oneover.com/
1•jonnyhightop•9m ago•0 comments

Show HN: A 3D Configurator for Macropads

https://npad.ngrok.dev
1•alexandermkinn•11m ago•0 comments

Show HN: Anku – Turn PostHog funnel drop-offs into UX specs and code patches

https://www.anku.app
1•ankushdograuk•11m ago•0 comments

Lojycal – Connecting IT Operations Through a Workplace Operations Graph

https://www.lojycal.com/resources
1•Lojycal•11m ago•0 comments

Jev and Jinja Skills in Claude for judgment calls bypassing Opus context

https://olegivye.com/#/article/llajinja-jev
1•olekrk•12m ago•0 comments

Show HN: Bomfather, eBPF Runtime Security

https://github.com/bomfather/agent
3•nathannaveen•12m ago•0 comments

Import Twitter Data Archive Using WP-CLI Resources

https://github.com/shawnhooper/twitter-archive-to-wp
1•herbertl•12m ago•0 comments

China's Growth Machines

https://worksinprogress.co/issue/chinas-growth-machine/
1•whiteblossom•13m ago•0 comments

The Mythical Token-Month: Building Software with Machines That Write Software

https://mythicaltokenmonth.com/
2•Anon84•15m ago•0 comments

Show HN: Sleep Weather – a world map of how people slept last night

https://sleepweather.com/
1•trevisz2•16m ago•0 comments

MOQ Video Streaming for Robots, Drones, and Embedded Devices

https://www.red5.net/blog/moq-video-streaming-for-robots-drones-and-embedded-devices/
1•mondainx•17m ago•0 comments

Agentic Retrieval-Augmented Generation: A Survey on Agentic RAG

https://arxiv.org/abs/2501.09136
1•teleforce•18m ago•0 comments

Show HN: BuildGist, plain-English notes on what your coding agent changed

https://buildgist.com/
1•kzahiri•18m ago•0 comments

Show HN: MIT OCW TV

https://rahulch.site/mitocwtv/
2•iKidA•18m ago•1 comments

Heat Pumps Are Coming for Coal's Industrial Heat Market

https://oilprice.com/Energy/Energy-General/Heat-Pumps-Are-Coming-for-Coals-Industrial-Heat-Market...
2•thelastgallon•18m ago•1 comments

Anthropic offers £145k for London personal assistant amid AI agent boom

https://www.cityam.com/anthropic-offers-145k-for-london-personal-assistant-amid-ai-agent-boom/
5•mirzap•19m ago•1 comments