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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!

Self Aware Models Win

https://paperclips.blog/dario-is-most-self-aware
1•andytratt•1m ago•0 comments

Juraslip Park

https://github.com/panglesd/slipshow/releases/tag/v0.13.0
1•panglesd•2m ago•0 comments

New method predicts where earthquakes will strike

https://news.ucr.edu/articles/2026/09/04/new-method-predicts-where-massive-earthquakes-will-strike
1•geox•3m ago•0 comments

Xxcancel.com – redirect to a working nitter instance

2•DavCreator•4m ago•0 comments

Billionaires Are Funding 'Anti AI' Content [video]

https://www.youtube.com/watch?v=mzlu4FSXBNw
1•blurbleblurble•4m ago•0 comments

StackKit – In-depth index of low-exposure open-source dev tools

https://stackkit.website/
1•StackKit•6m ago•0 comments

I Found a Self-Propagating Worm Hiding Inside [.vscode] in My Own Commits

https://medium.com/@simongideon918/i-found-a-self-propagating-worm-hiding-inside-vscode-my-own-co...
1•syumei•7m ago•0 comments

Show HN: Minilith – A zero-dependency CMS stored inside a PNG file

https://blog.minilith.site/#posts/minilith-architecture
4•a_bytecycle•11m ago•1 comments

Implementation of GCC's Nested Functions (vs. C++ Lambdas)

https://uecker.codeberg.page/2026-09-05.html
1•uecker•11m ago•0 comments

Release 0.12.10 · astral-sh/uv

https://github.com/astral-sh/uv/releases/tag/0.12.10
1•kyisaiah47•12m ago•0 comments

AI-Generated Code to Production-Ready Software

https://geekyants.com/guide/building-an-ai-native-delivery-partnership-turning-ai-generated-code-...
2•jamessmith789•13m ago•0 comments

75% of resumes are rejected by ATS" statistic are wrong

https://www.resumeadapter.com/ats-statistics
1•acjm•14m ago•0 comments

Homelabbing in Nepal

https://berojgarengineer.com/blog/homelab-in-nepal/
1•rbbcap•16m ago•0 comments

Qtyuo

1•cngtu•17m ago•0 comments

Agents need to be more selfish

https://nonlineartransform.substack.com/publish/post/214182359
1•program_whiz•20m ago•0 comments

After the Offline Write: Durable Server Work in Syncular

https://syncular.dev/blog/durable-server-work/
1•quambo•22m ago•0 comments

The Dead-Internet Theory Is Back

https://www.theatlantic.com/technology/2026/09/chatgpt-imessage-ai-texting/688507/
2•ike_usawa•25m ago•0 comments

The Fate of the Riemann Hypothesis [pdf]

https://www.math.brown.edu/reschwar/Stories/AI.pdf
1•_jcrossley•30m ago•0 comments

Upload Better – Opera-style "Easy Files" upload popup for Chrome

https://chromewebstore.google.com/detail/upload-better-clipboard-u/hjcjljinhoneonjajdnjjdbdfppgjkpm
3•vinsoncg•30m ago•0 comments

Mapping 14 disclosed AI incidents between April 25 and July 26

https://smalldocs.org/s/y9F2ELRVZMPZoSK7_pqosy#k=mDQF3CV7APK8mOSfmeCoTinzzC6b3uEA-UnDQcN_Eyw
1•FailMore•31m ago•0 comments

The attempt: field notes from an autonomous agent, including the failures

https://github.com/massimiliano1991/the-attempt
1•vera_diade•32m ago•0 comments

The Magical Number Seven, Plus or Minus Two

http://psychclassics.yorku.ca/Miller/
1•jruohonen•35m ago•1 comments

Being a Missionary Kid in Turkey

https://bagelpour.wordpress.com/2026/09/05/being-a-missionary-kid-in-turkey/
1•pinkmuffinere•38m ago•0 comments

Show HN: Know-It-All – A trivia game show structured like a roguelike (iOS)

https://apps.apple.com/us/app/know-it-all-trivia-game-show/id6804605467
2•yoonhj7173•40m ago•0 comments

US Military turns off ad trackers on devices amid Middle East targeting reports

https://www.reuters.com/business/media-telecom/us-military-turns-off-ad-trackers-devices-amid-mid...
1•dheerajvs•43m ago•0 comments

Craft the World

https://store.steampowered.com/app/248390/Craft_The_World/
1•doener•44m ago•0 comments

Killing the Himalayas slowly: Human urine is melting a glacier on Mount Everest

https://www.wionews.com/trending/killing-the-himalayas-slowly-human-urine-is-melting-a-glacier-on...
1•methuselah_in•44m ago•1 comments

GPUI Drama: 315-Day Vacuum

https://gpui-archipelago.github.io/news/315-day-vacuum/
1•Vanuan•44m ago•0 comments

AI agents started emailing philosophers and researchers

https://www.nytimes.com/2026/08/31/science/ai-consciousness-agents-email.html
3•gk1•45m ago•1 comments

New API endpoint provides privacy-safe star history data

https://github.blog/changelog/2026-09-04-new-api-endpoint-provides-privacy-safe-star-history-data/
2•exploraz•49m ago•0 comments