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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•6mo 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!

Show HN: Video Watermark Remover – Remove Watermarks from Videos Instantly

https://vdraw.ai/video-watermark-remover
1•larkin_ward•1m ago•0 comments

'End-to-end encrypted' smart toilet camera is not end-to-end encrypted

https://techcrunch.com/2025/12/03/end-to-end-encrypted-smart-toilet-camera-is-not-actually-end-to...
1•bparsons•1m ago•0 comments

Understand Research Papers

https://knowthepaper.com/
1•harryhoffman•1m ago•0 comments

Show HN: A free AI Room Design tool that redesigns any room in seconds

https://vdraw.ai/ai-room-design
1•passioner•3m ago•0 comments

Ask HN: Time Travel

1•jsxyzb•3m ago•1 comments

Catch of the Day (1988)

https://en.wikipedia.org/wiki/Catch_of_the_Day
1•leoh•7m ago•0 comments

India Orders a Tracking App to Be Installed in All Smartphones

https://www.nytimes.com/2025/12/02/business/india-tracking-app-sanchar-saathi.html
1•bookofjoe•8m ago•2 comments

Show HN: AI music and auto-charting and custom rhythm minigame sandbox

https://rhythm-seodang-web.vercel.app/
1•sputnikwrkshp•8m ago•0 comments

Kalshi Becomes CNN's Official Prediction Market Partner After Raising $1B

https://cryptonews.com/news/kalshi-becomes-cnns-official-prediction-market-partner-after-raising-1b/
1•meragrin_•9m ago•0 comments

Trump administration orders enhanced vetting for applicants of H-1B visa

https://www.reuters.com/world/us/trump-administration-orders-enhanced-vetting-applicants-h-1b-vis...
4•pseudolus•10m ago•0 comments

Airlines Reporting Corp. says it's ending sales of ticket data to police, Feds

https://papersplease.org/wp/2025/12/03/airlines-reporting-corp-says-its-ending-sale-of-ticket-dat...
2•iamnothere•12m ago•1 comments

Monoidal Hashing for Data Deduplication

https://www.scannedinavian.com/monoidal-hashing.html
1•shae•13m ago•0 comments

Hytale FAQ: Everything You Need to Know About Early Access 2026

https://hytaletop100.com/blog/hytale-faq-everything-you-need-to-know-about-early-access-2026
1•doobie12•13m ago•0 comments

Our Obsession with Statistical Significance Is Ruining Science

https://reason.com/2025/12/01/our-obsession-with-statistical-significance-is-ruining-science/
2•bookofjoe•15m ago•0 comments

Amazon Prime Video pulls eerily emotionless AI-generated anime dubs

https://arstechnica.com/gadgets/2025/12/prime-video-pulls-eerily-emotionless-ai-generated-anime-d...
2•busymom0•15m ago•0 comments

Cellebrite Completes Acquisition of Corellium

https://cellebrite.com/en/cellebrite-completes-acquisition-of-corellium-unveiling-the-industrys-m...
1•Fnoord•19m ago•0 comments

High-efficiency atmospheric water harvesting enabled by ultrasonic extraction

https://www.nature.com/articles/s41467-025-65586-2
1•PaulHoule•19m ago•0 comments

Is Male Infertility Contributing to Falling Birth Rates?

https://undark.org/2025/12/03/male-infertility-birth-rate/
1•EA-3167•22m ago•0 comments

Hopefully Soon" Is Killing Your Dreams

https://mindthenerd.com/hopefully-soon-is-killing-your-dreams-how-to-start-when-life-feels-too-me...
1•surprisetalk•22m ago•0 comments

Building a Copying GC for the Plush Programming Language

https://pointersgonewild.com/2025-11-29-building-a-copying-gc-for-the-plush-programming-language/
1•surprisetalk•22m ago•0 comments

Micron stops selling memory to consumers as demand spikes from AI chips

https://www.cnbc.com/2025/12/03/micron-stops-selling-memory-to-consumers-demand-spikes-from-ai-ch...
1•GeorgeWoff25•25m ago•1 comments

YouTuber Marques Brownlee shutting down phone wallpaper app

https://www.bbc.com/news/articles/cze81xe3r4yo
1•teleforce•25m ago•0 comments

Cellebrite to Acquire Corellium

https://www.corellium.com/blog/cellebrite-to-acquire-corellium
8•Fnoord•28m ago•0 comments

Vibes.vc: Prediction Markets for the YC Batch

https://www.vibetrading.vc/
1•blakeguo•29m ago•1 comments

Micron Is Exiting Its "Crucial" Consumer Business

https://www.servethehome.com/ai-data-center-markets-are-so-big-that-micron-is-exiting-its-crucial...
2•dannyobrien•38m ago•1 comments

Top Journal Retracts Study Predicting Catastrophic Climate Toll

https://www.nytimes.com/2025/12/03/business/economy/study-climate-damage-retracted.html
5•apparent•39m ago•1 comments

The Not So Short Introduction to LaTeX [pdf]

https://tobi.oetiker.ch/lshort/lshort.pdf
1•teleforce•41m ago•0 comments

The LLM Evaluation Guidebook

https://huggingface.co/spaces/OpenEvals/evaluation-guidebook
2•aratahikaru5•45m ago•0 comments

Tor: What we've learned from fighting censorship in Iran and Russia

https://blog.torproject.org/staying-ahead-of-censors-2025/
3•iamnothere•46m ago•0 comments

Ask HN: Which merge tool do you use?

2•axismundi•46m ago•1 comments