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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!

Game on: Henry Cavill is putting Googlebook to the test

https://blog.google/products-and-platforms/devices/googlebook/henry-cavill-googlebook-video-game/
1•shscs911•15s ago•0 comments

PSSA: A non-transformer language model written from scratch in Rust

https://github.com/Sparticle62ops/pssa
2•sparticle62•6m ago•0 comments

Radiofax

https://en.wikipedia.org/wiki/Radiofax
1•silver92bullet•6m ago•0 comments

The Adolescence of the State

https://siliconpalace.substack.com/p/the-adolescence-of-the-state
2•shigalyov•10m ago•0 comments

Weatherfax

https://www.raphnet.net/radio/wefax/index_en.php
3•Shank•17m ago•1 comments

Critical LiteLLM Vulnerability

https://github.com/BerriAI/litellm/security/advisories/GHSA-7hp6-4w63-5g45
1•ajackfox•17m ago•0 comments

A value-based approach to mathematics

https://terrytao.wordpress.com/2026/09/26/a-value-based-approach-to-mathematics/
1•pykello•18m ago•0 comments

Astroforge will fly a spacecraft autonomously using AI next year

https://spacenews.com/astroforge-to-test-full-spacecraft-autonomy-using-ai/
1•KinetiNode•23m ago•0 comments

DeepGEMM-Ascend: Huawei Ascend NPUs Matrix Multiplication Kernel Library

https://github.com/deepseek-ai/DeepGEMM-Ascend
1•helloericsf•23m ago•0 comments

RSS Feeds for Last.fm

https://lfm.xiffy.nl/
2•Baljhin•26m ago•1 comments

Travis Kalanick is back: How Uber's ousted founder went from pariah to hero

https://fortune.com/2026/09/24/travis-kalanick-uber-comeback-atoms-ai-robotics-cloud-kitchens-sil...
2•aanet•27m ago•1 comments

Why Didn't GitHub Copilot Win?

https://jacobg.co/copilot/
1•jgx0•28m ago•0 comments

Show HN: Generate live realtime dashboards of your system in seconds

https://github.com/yeet-src/omarchy-yeet-ai
1•r3tr0•31m ago•0 comments

Amazon Crime and Other Tales of Billionaire Lying from the Data Center Wars

https://billmckibben.substack.com/p/amazon-crime
3•HotGarbage•31m ago•0 comments

A Metric for Memory Fragmentation

https://asawicki.info/news_1757_a_metric_for_memory_fragmentation
1•signa11•35m ago•0 comments

Show HN: Jev as the Bletchley Park Analyst: A Software Bombe on Enigma

https://github.com/agodoy21/enigma-jev
2•ag_21•37m ago•0 comments

Nats-lens – monitors JetStream consumers for delivery violations

https://github.com/biplabku/nats-lens
1•biplabku•38m ago•0 comments

Responsible Release of AI-Generated Mathematics

https://agmai.org/general-sep29/
2•aureianimus•50m ago•0 comments

Ballmer Peak

https://en.wikipedia.org/wiki/Ballmer_Peak
3•thunderbong•50m ago•0 comments

Cryptocurrency Exchange

https://en.wikipedia.org/wiki/Cryptocurrency_exchange
1•peter_d_sherman•58m ago•0 comments

Crossing the Computer-Use Chasm

https://twitter.com/_shubhankar/status/2104803610886647809
2•shubh24•58m ago•0 comments

What 30k robot dogs taught me about degrees of freedom, shipping a real product

https://www.hackster.io/RzLi/petoi-quaddle-d09f60
1•petoi•58m ago•1 comments

Exchange (Organized Market)

https://en.wikipedia.org/wiki/Exchange_(organized_market)
2•peter_d_sherman•1h ago•0 comments

Llms.txt: agent-optimization wishful thinking

https://www.phpied.com/llms-txt-agent-optimization-wishful-thinking/
2•tatersolid•1h ago•0 comments

'Paying attention in age of clickbait' – 2027 World Communications Day theme

https://www.vaticannews.va/en/vatican-city/news/2026-09/vatican-dicastery-releases-2027-world-com...
2•reaperducer•1h ago•1 comments

Free Palestine! Or Not?

https://medium.com/freedomofthought/free-palestine-or-not-5f30cd5459b8
2•raynchad•1h ago•1 comments

Jinn – a Rust microkernel with capability-base security looking f contributors

https://github.com/GeovaneEstanislau/Jinn_Project
2•onofiu•1h ago•0 comments

One photographer has spent two decades building a visual ark of animal life

https://www.photoroo.com/cp/893/8-things-we-didnt-expect-to-find-in-5633-photography-headlines
1•adinfiite•1h ago•0 comments

Show HN: Moching – AI desktop agent with 219 built-in tools (Rust)

https://github.com/moching-ai-dev/moching
2•moching_ai_dev•1h ago•0 comments

Something Interesting

https://github.com/gameel11223/International-AI-Tribunal-Charter
2•gameelalabsi•1h ago•1 comments