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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!

What If I Told You Humans Are Moving Faster Than AI?

https://medium.com/freedomofthought/what-if-i-told-you-humans-are-moving-faster-than-ai-833441f3fb21
1•raynchad•3m ago•0 comments

Why It Hasn't Happened Yet: Capable AI and Malicious Intent

https://substack.norabble.com/p/why-it-hasnt-happened-yet
1•nedruod•10m ago•0 comments

Niu Lai – a two-person animated film becomes an unlikely hit in China [video]

https://www.youtube.com/watch?v=5XdeI0cOWSs
1•gregzeng95•15m ago•0 comments

Expert Witness to ChatGPT "Show how 3M is 0 percent at fault"

https://www.404media.co/show-how-3m-is-0-at-fault-expert-witness-used-chatgpt-to-write-report-def...
1•kristjansson•20m ago•0 comments

Using Starlink's Satellites to Study Earth's Upper Atmosphere

https://hackaday.com/2026/08/17/using-starlinks-satellites-to-study-earths-upper-atmosphere/
1•toomuchtodo•23m ago•0 comments

When it comes to LLM, it's you who's using it wrong

https://www.vinoth.net/llm-wrong
1•avinoth•24m ago•0 comments

San Diego 150 Years Ago: Rare AI Reconstruction Visuals [video]

https://www.youtube.com/watch?v=qWaR_nc5sKM
2•latchkey•26m ago•0 comments

PineNote and PineTab2 are estimated to run out of stock in three months

https://social.treehouse.systems/@pine64/117111063654864544
1•dredmorbius•29m ago•1 comments

Beyond WASI: Running any Rust application in the browser with BrowserPod 3.0

https://labs.leaningtech.com/blog/browserpod-rust
1•corv•30m ago•0 comments

The Large Hadron Collider: 1984 – 2017

https://timeline.web.cern.ch/timeline-header/93
1•andsoitis•30m ago•0 comments

Missed shifts were costly to this McDonald's. An app has fixed the problem

https://text.npr.org/nx-s1-5893721
2•williadc•38m ago•0 comments

Sick of A.I. Slop? So Are Tech Giants

https://www.nytimes.com/2026/08/17/technology/ai-slop.html
1•uxhacker•41m ago•0 comments

Show HN: An open source alternative to Google's Critique

https://twigg.vc
1•andrebianchessi•42m ago•0 comments

USS Benfold Stalled and Lost Power in the South China Sea for Four Days

https://news.usni.org/2026/08/14/uss-benfold-was-stalled-in-the-south-china-sea-for-four-days-aft...
2•Gaishan•43m ago•0 comments

Columbia House Is Shutting Down

https://pitchfork.com/story/columbia-house-is-shutting-down/
5•ChrisArchitect•52m ago•2 comments

Fires on the Plain: Both Ends Burning (2007)

https://www.criterion.com/current/posts/473-fires-on-the-plain-both-ends-burning
1•cocacola1•57m ago•0 comments

Show HN: An n8n-like orchestration toolkit for DeepSeek harnesses

https://github.com/ahamoment-101/Open-DeepSeek-Harness-Desktop
1•darrenzhang•1h ago•0 comments

Creepy Insurers?

https://matthewekahn.substack.com/p/creepy-insurers
1•NomNew•1h ago•0 comments

I built an app that hides encrypted messages inside normal emojis

https://apps.apple.com/us/app/imp-secret-messages/id6794774885
1•oliverhann•1h ago•0 comments

California's new tire efficiency rules could save drivers $1B a year

https://grist.org/transportation/californias-new-tire-efficiency-rules-could-save-drivers-1b-a-year/
13•littlexsparkee•1h ago•16 comments

25 Years of Haiku: From "Ok, Let's Start" to the Present

https://www.desktoponfire.com/haiku_inc/969/25-years-of-haiku/
5•fork-bomber•1h ago•2 comments

Google plans to stop making Pixel products in China in 2027

https://asia.nikkei.com/spotlight/supply-chain/exclusive-google-plans-to-stop-making-pixel-produc...
2•spenvo•1h ago•0 comments

Help Peer

https://www.seangoedecke.com/help-peer/
3•gfysfm•1h ago•0 comments

Show HN: Honeymatcha.io connect your Grok bots for dating, meetups, anything

https://honeymatcha.io
2•JaiRathore•1h ago•1 comments

Show HN: Build beautiful web apps faster with UiSvelte

https://github.com/sappsdev/ui-svelte
1•victorriba•1h ago•0 comments

A candy brand discovered TikTok made an AI clone of its founder to run ads [video]

https://www.youtube.com/watch?v=itovmsMwus0
5•navs•1h ago•0 comments

Satellite operators are in panic mode due to a worsening launch crisis

https://arstechnica.com/space/2026/08/theres-a-huge-launch-crunch-right-now-and-it-will-probably-...
1•jnord•1h ago•0 comments

S-1 – Independent Company Studies

https://s-1.vercel.app/
11•simonpure•1h ago•0 comments

Unslop my deck – upload slide decks, read less slop

https://unslopmydeck.xyz/
1•fkodom•1h ago•1 comments

What's Better Than Binary? – Advent of Computing Episode 187

https://adventofcomputing.libsyn.com/episode-187-whats-better-than-binary
2•matt_d•1h ago•0 comments