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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!

We Built Linear Agent

https://linear.app/now/how-we-built-linear-agent
1•cristinacordova•1m ago•0 comments

Canada Is Building a Surveillance State via 5 Bills

https://x.com/lucyhargreaves4/article/2066903272271544551
1•vancouvermatt•2m ago•0 comments

New Claude model improves lower bound on problem linked to Reimann hypothesis

https://marqr.codes/u3bno
1•ajax33•2m ago•2 comments

Sprout – easily build an app with AI, share it, and use other apps

https://sprout.monkeyai.io/
1•davidk2yang•10m ago•1 comments

Antirez/h3.c: MiniMax H3 inference engine for Mac computers

https://github.com/antirez/h3.c
2•swyx•17m ago•0 comments

Insidedb, an interactive, animated explainer of database internals

https://david-g-3654.github.io/insidedb/
1•davai-g•20m ago•0 comments

Show HN: Sketchling – a hand-drawn animation language for coding agents

https://github.com/AnayGarodia/sketchling
1•ag5250•21m ago•0 comments

Predicting AI Job Exposure

https://www.ben-evans.com/benedictevans/2026/5/24/ai-job-exposure
1•fagnerbrack•23m ago•0 comments

Reorgs Happen

https://ben.balter.com/2026/06/07/reorgs-happen/
3•fagnerbrack•23m ago•0 comments

Compensation Bands and Promotions

https://molochinations.substack.com/p/compensation-bands-and-promotions
2•fagnerbrack•23m ago•0 comments

Google's AI Team Tells Job Seekers Its HR Filters Are Unreliable

https://www.bloomberg.com/news/articles/2026-08-10/google-s-ai-team-tells-job-seekers-its-hr-filt...
3•htrp•25m ago•1 comments

Show HN: Linejudge – an independent verification harness for coding agents

https://github.com/phillipmex/linejudge
1•phillipmex•30m ago•0 comments

Show HN: Airship – Figma-Like Visual Editor for Claude Code, Codex and OpenCode

https://github.com/0xnyn/airship
1•0xnyn•30m ago•0 comments

A Lost Civilization Is Baffling Experts and Rewriting China's Origin Story

https://www.wsj.com/world/china/a-lost-civilization-is-baffling-experts-and-rewriting-chinas-orig...
5•bookofjoe•32m ago•1 comments

Nintendo Should Stop Selling Consoles

https://taikhooms.substack.com/p/nintendo-the-media-company
2•Altaba•34m ago•0 comments

Flock Cameras Can Track Every Car in America. Police Love Them. Citizens Don't

https://www.nytimes.com/2026/08/10/us/flock-cameras-can-track-every-car-in-america-police-love-th...
28•pseudolus•39m ago•8 comments

OpenAI found us generators for maximal Monster subgroup holdout 59:29

https://arxiv.org/abs/2607.28900
2•oliculipolicula•40m ago•0 comments

U.S. brokers secret deal on clandestine Syrian nuclear site

https://www.axios.com/2026/08/10/syria-nuclear-israel-turkey-iaea
3•cwwc•41m ago•0 comments

Sergey Brin has now spent $100M to fight the billionaire tax

https://techcrunch.com/2026/08/10/google-co-founder-sergey-brin-has-now-spent-100-million-to-figh...
8•debo_•42m ago•2 comments

Show HN: Ohm – Use uBlock Origin cosmetic filters in Chrome again

https://ohm.wbnns.com/
1•wbnns•44m ago•0 comments

Show HN: It's 6 18 am now going to sleep as MVP is made GN

https://bengu-phi.vercel.app
1•sahil423•49m ago•0 comments

Road deaths in the US have fallen more slowly than in other rich countries

https://ourworldindata.org/data-insights/road-deaths-in-the-united-states-have-fallen-much-more-s...
3•alphabetatango•54m ago•1 comments

Using AI while exercising your critical thinking

https://swiftrocks.com/using-ai-without-losing-critical-thinking
1•jshchnz•54m ago•0 comments

The Fourth Amendment After Chatrie

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=7238178
2•cbrews•54m ago•0 comments

Harry Potter fans force diverting UK-Ireland power link to avoid Dobby's grave

https://www.bbc.com/news/articles/cy8mgpl27dpo
7•yurivish•56m ago•2 comments

The insufferable hypocrisy of elite academia

https://www.theatlantic.com/magazine/2026/09/elite-academia-leadership-hypocrisy/687969/
2•loughnane•57m ago•0 comments

Show HN: SecondState – what if Hebbia started with raw ERP data?

https://trysecondstate.com/
1•ELAmrani•1h ago•0 comments

SpaceX's Earnings Show Elon Wiped Out Two-Thirds of Twitter's Ad Business

https://www.techdirt.com/2026/08/10/spacexs-earnings-show-elon-wiped-out-two-thirds-of-twitters-a...
7•shye•1h ago•0 comments

Greenland issues 'strong warning' as Trump-linked oil firm prepares to drill

https://www.theguardian.com/world/2026/aug/08/greenland-iwarning-trump-linked-oil-firm-prepares-d...
6•abdelhousni•1h ago•1 comments

Beware the Permanent Periphery

https://asteriskmag.com/issues/15/beware-the-permanent-periphery
2•m-hodges•1h ago•0 comments