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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!

Planned Obsolescence

https://en.wikipedia.org/wiki/Planned_obsolescence
1•Jimmc414•3m ago•0 comments

SellerButton – Export eBay orders to Google Sheets with one click

https://www.sellerbutton.com
1•sameich•4m ago•0 comments

2ADVANCED Studios Archive

https://v4prophecy.2advanced.com/
1•bookofjoe•4m ago•0 comments

The Dino Directory

https://www.nhm.ac.uk/discover/dino-directory.html
1•susam•4m ago•0 comments

Show HN: Field Guide to SF Slang

https://sfisms.org/
1•parthmah•6m ago•0 comments

Dashboard Touch, a build-your-own version of TouchID

https://www.anildash.com/2026/08/20/introducing-dashboard-touch/
1•MBCook•8m ago•0 comments

The OpenAI-HuggingFace Incident Timeline

https://artifactbin.dev/@vivek/YPLu0U-the-openai-hugging-face-incident
1•nuwandavek•8m ago•0 comments

'Ghost Job' Ads Are Getting So Bad That Lawmakers Want to Ban Them

https://www.wsj.com/lifestyle/careers/ghost-job-ads-are-getting-so-bad-that-lawmakers-want-to-ban...
6•bcaulfield•10m ago•0 comments

Dolphins observed using sea snail shells as tools outside Western Australia

https://onlinelibrary.wiley.com/doi/10.1111/mms.70252
2•bcaulfield•14m ago•1 comments

Show HN: A collection of websites built on .lol

https://upon.lol/
1•si_164•16m ago•3 comments

The Dinosaur Database

https://dinosaurpictures.org/
1•susam•17m ago•0 comments

Show HN: Front Page of the Internet

https://frontpageoftheinternet.lol/
1•mandarwagh•20m ago•0 comments

San Francisco Bay Area dethroned as largest tech talent market

https://www.sfgate.com/news/article/san-francisco-bay-area-dethroned-largest-tech-22396813.php
1•bcaulfield•20m ago•0 comments

Dinos

https://dinosaurland.es/en/dinos/
1•susam•20m ago•0 comments

Show HN: Flowtube – Distraction Free YouTube

https://chromewebstore.google.com/detail/flowtube-–-distraction-fr/cppgodeleiojlickmcgobbcdfpji...
1•surya_waters•23m ago•0 comments

No Chocolate,No Beef:Israel's Restrictions on Goods to Gaza and the Black Market

https://www.haaretz.com/gaza/2026-01-22/ty-article-magazine/.premium/no-chocolate-no-beef-israels...
1•xg15•23m ago•1 comments

Lunch with the FT. Errol Musk: 'I'm Elon's father, not his pal'

https://www.ft.com/content/ded0ef2a-fb61-4960-981d-5bcf5f0c6bf2
1•samizdis•27m ago•1 comments

Infimaker K1 – Professional Desktop 5-Axis CNC

https://infimaker.com/pages/infimaker-k1
2•dgellow•30m ago•0 comments

LinkedIn-maxxing: An early-stage GTM guide

https://nmn.gl/blog/linkedin-maxxing
1•namanyayg•31m ago•0 comments

Behaviour‑based decision layer for real‑time audio analysis (CEPA Logic)

https://github.com/AdBusterOfficial
1•Bo_Amigo_910•32m ago•0 comments

Oleander: Query Routing and Multi-Engine Infra Is the Future

https://oleander.dev
1•jessol•33m ago•0 comments

80% of developers find AI coding more addictive than helpful

https://www.zdnet.com/article/80-of-developers-find-ai-coding-more-addictive-than-helpful/
3•CrankyBear•35m ago•0 comments

Mecrisp – Native Code Forth

https://mecrisp.sourceforge.net/
1•smartmic•36m ago•0 comments

The Center for Bits and Atoms

https://cba.mit.edu/
1•gregsadetsky•38m ago•0 comments

Building Piclaw on Top of an Opinionated Coding Agent

https://taoofmac.com/space/blog/2026/08/21/2218
1•rcarmo•39m ago•0 comments

Run 290B+ frontier MoE models locally on your gaming PC

https://github.com/FlashML-org/FreeToken
1•shenli3514•39m ago•0 comments

Massive Child Safety Trial Against Meta Starts in Federal Court

https://www.wsj.com/tech/massive-child-safety-trial-against-meta-starts-in-federal-court-130e3739
4•rib3ye•41m ago•1 comments

Personalized Language Learning

https://lumilanguage.com/
2•ewzie•42m ago•0 comments

Astronomers witness cosmic recycling system in action

https://news.northwestern.edu/stories/2026/08-2/astronomers-witness-cosmic-recycling-system-in-ac...
3•gmays•52m ago•0 comments

Remotely Unlocking Electric Scooters

https://henriemategui.com/post/remotely-unlocking-electric-scooters
5•henriemategui•54m ago•0 comments