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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!

Work on the Fairphone 6 is turning it into the most modern pmOS smartphone

https://catcrafts.net/posts
1•pizzaiolo•4m ago•0 comments

Show HN: Proxy-or-Not, Proxy Detector

https://arcades.click/proxy-or-not
1•jwally•5m ago•0 comments

Adobe, RapidRAW, and the End of Selling Software as a Product

https://danunparsed.com/p/rapidraw-adobe
1•sambellll•6m ago•0 comments

Suggest some uncensored AI for photo genaration?

3•tafijul•9m 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...
1•cwwc•9m ago•0 comments

Free ATS keyword checker after friends sprayed 200 resumes

https://medium.com/@grhawk/i-built-a-free-ats-keyword-checker-after-watching-friei-built-a-free-a...
1•applyboost•13m ago•0 comments

Moscow Is Speaking [video]

https://www.youtube.com/watch?v=_d1AmMt6A9s
1•consumer451•16m ago•0 comments

Counting the Days, Revisited

https://dotat.at/@/2026-08-09-rata-die.html
1•fanf2•20m ago•0 comments

Ask HN: Anyone that has built a marketplace, what has been your experience?

2•mfisc_019•25m ago•2 comments

Show HN: OpsCart – Read-only Kubernetes triage with incident history

https://github.com/opscart/opscart-k8s-watcher
2•opscart•27m ago•0 comments

Turn messy AliExpress dropshipping listings into clean products with AI

https://importer.omniicore.com/
2•omniicore•41m ago•1 comments

A Comprehensive Guide to InnoDB Locking

https://jahfer.com/posts/innodb-locks/
2•shay_ker•45m ago•0 comments

ChatGPT starts blocking direct requests to copy an author's style

https://arstechnica.com/ai/2026/07/chatgpt-stops-cloning-famous-writers-voices-but-may-capture-a-...
6•Eloissssss•51m ago•0 comments

Six Little Lines of Fail [video]

https://www.youtube.com/watch?v=VvUdvte1V3s
2•ruckfool•51m ago•0 comments

Waits: Arthur Samuel's Checkers

https://timereshared.com/waits-samuel-checkers/
2•abrax3141•52m ago•0 comments

Interview with Amit Patel (Red Blob Games) on Making Things

https://digitalseams.com/blog/amit-patel-on-making-things
2•bobbiechen•55m ago•0 comments

The phone book that led us to Assad's spy chief in hiding

https://www.bbc.com/news/articles/c4gyrzn8p94o
11•cwwc•56m ago•0 comments

Model Genome: Fingerprinting Whether an LLM Was Trained from Scratch or Derived

https://huggingface.co/blog/mayafree/model-dna
2•prof_ai_cn•58m ago•0 comments

Opus 4.6 Was the Last Coding Model That Changed How I Work

https://awaitinginput.substack.com/p/opus-46-was-the-last-coding-model
3•bsovran•1h ago•0 comments

A weapon that could help red squirrels in their Battle of Britain

https://www.economist.com/britain/2026/01/10/a-weapon-that-could-help-red-squirrels-in-their-batt...
3•geneticdrifts•1h ago•0 comments

"Coding is solved" misses the point

https://blog.mastykarz.nl/coding-is-solved-misses-the-point/
3•listless•1h ago•0 comments

Incentives Are for Losers

https://www.experimental-history.com/p/incentives-are-for-losers
4•bkudria•1h ago•0 comments

Ask HN: What is your database size

2•kureikain•1h ago•1 comments

The State of Google

2•3dedb728-3f77•1h ago•1 comments

I built a video editor in Rust with extensive AI-powered features

https://github.com/heng30/wayshot
2•heng30•1h ago•0 comments

Aftermath of Catastrophic Fires in Spokane

https://www.kuow.org/climate/2026-08-07/its-apocalyptic-a-look-at-the-aftermath-of-catastrophic-f...
3•andsoitis•1h ago•0 comments

Archive of Animal Photography Reveals 18,000 Species and Counting

https://www.smithsonianmag.com/science-nature/this-amazing-archive-of-animal-photography-reveals-...
3•pseudolus•1h ago•0 comments

A viral mosquito-killing laser device could be coming to the U.S.

https://www.npr.org/2026/06/07/nx-s1-5839969/a-viral-mosquito-killing-laser-device-could-be-comin...
7•toomuchtodo•1h ago•2 comments

The AI Apocalypse Is Here

https://www.compactmag.com/article/the-ai-apocalypse-is-already-here/
26•reasonableklout•1h ago•18 comments

Show HN: Aidress – LangChain integration for cross-agent discovery and trust

https://docs.langchain.com/oss/python/integrations/tools
2•mehulv24•1h ago•0 comments