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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!

LFM2.5 2.6B model competitive with 4x larger models

https://huggingface.co/LiquidAI/LFM2.5-2.6B
1•nateb2022•8s ago•0 comments

Meta: 7k

https://lcamtuf.substack.com/p/meta-7000
1•surprisetalk•2m ago•0 comments

Show HN: Block Blast AI Solver – Solve Puzzle Boards from a Screenshot

https://www.blockblastaisolver.com/
1•Mark_File217•3m ago•0 comments

Uber's Strategy for Fighting Sexual Assault Suits: 'What Were You Wearing?'

https://www.nytimes.com/2026/08/04/business/uber-sexual-assault-lawsuits.html
2•teachrdan•3m ago•0 comments

U.S. Air Force F-16 realtime autonomous intercepts

https://news.lockheedmartin.com/2026-08-04-Skunk-Works-R-Advances-Sensor-Powered-AI-Fighter-Inter...
1•r2sk5t•4m ago•0 comments

Invasive Aedes mosquitoes are colonizing US cities that were too cold for them

https://slate.com/technology/2026/08/mosquito-bugbite-insect-disease-america.html
1•hihellolhi•4m ago•0 comments

Bluetooth High Data Throughput

https://www.bluetooth.com/blog/bluetooth-le-will-soon-get-a-major-boost-in-speed-introducing-blue...
1•ledoge•6m ago•0 comments

The Catherine Project

https://catherineproject.org/
2•taylorlapeyre•6m ago•0 comments

Show HN: Captionrich – Edit your video with one click

https://captionrich.com
2•techtasium•8m ago•0 comments

Launch HN: EdotEnv (YC S26) – Quant Trading RL Envs to Teach LLMs Research

https://edotenv.com/
5•Mzzzzz•11m ago•0 comments

Six months prior to the September 11 attacks, The Lone Gunmen

https://en.wikipedia.org/wiki/The_Lone_Gunmen_(TV_series)
3•xkcd1963•12m ago•0 comments

LLM Arena

https://arena.ai/
2•simonebrunozzi•13m ago•0 comments

Bending Spoons acquires Airtable for $1.25B

https://www.businesswire.com/news/home/20260730994716/en/Bending-Spoons-has-entered-into-a-defini...
5•TWDan•13m ago•0 comments

I Became the Honest Broker

https://www.honest-broker.com/p/how-i-became-the-honest-broker-c04
2•paulpauper•14m ago•0 comments

Creating, Copying, and Remixing in the Age of AI

https://molochinations.substack.com/p/creating-copying-and-remixing-in
3•domhudson•15m ago•1 comments

Why Sheep Need Pigs in Sheepdog's Clothing

https://www.overcomingbias.com/p/why-sheep-need-pigs-in-sheepdogs
2•paulpauper•15m ago•0 comments

Indirect Lessons from Human Alignment

https://dynomight.substack.com/p/human-alignment
2•paulpauper•15m ago•0 comments

AI data-centre race builds $1T lease burden for Big Tech

https://www.reuters.com/business/retail-consumer/ai-data-centre-race-builds-1-trillion-lease-burd...
3•mapping365•16m ago•0 comments

Waymo – Dallas Open to All

https://waymo.com/blog/shorts/dallas-open-to-all/
4•xnx•17m ago•0 comments

Security Is Hard, Y'all

https://textslashplain.com/2026/08/04/security-is-hard-yall/
26•kevincox•18m ago•2 comments

Pachube – a detailed history of the early years

https://pachube.haque.co.uk/about/
2•adunk•19m ago•0 comments

Drug Discovery Has No Magic Wands

https://deepphenotype.substack.com/p/drug-discovery-has-no-magic-wands
2•geneticdrifts•22m ago•0 comments

The Golden Age of British Ice Cream

https://www.vittlesmagazine.com/p/the-golden-age-of-british-ice-cream
2•bryanrasmussen•22m ago•0 comments

Choose by Probability, Not by Expectation

https://win-vector.com/2026/08/04/choose-by-probability-not-by-expectation/
2•jmount•22m ago•0 comments

Unpacking ChatGPT Work

https://www.latent.space/p/unpacking-chatgpt-work
2•shloked•24m ago•0 comments

Establishing a Career Framework

https://www.jw.pe/blog/establishing-a-career-framework/
2•jwpe•25m ago•0 comments

Cloud computing giant Oracle Corp is on the cusp of a junk-grade credit rating

https://www.reuters.com/business/oracle-corp-goes-high-stakes-ratings-gamble-ai-strategy-2026-08-04/
2•mapping365•26m ago•0 comments

Elon Musk: In 36 months, the cheapest place to put AI will be space [video]

https://www.youtube.com/watch?v=BYXbuik3dgA
3•simonebrunozzi•29m ago•5 comments

iMessage-Exporter: Reverse Engineering Apple's Typedstream Format

https://chrissardegna.com/blog/reverse-engineering-apples-typedstream-format/
3•devy•29m ago•0 comments

Mathematicians Need to Act

https://tasmin.substack.com/p/mathematicians-need-to-act
4•reasonableklout•33m ago•1 comments