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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!

Nobloat/Poll

https://nobloat.org/articles/2026-10-11-nobloat-poll.html
1•cinemast•2m ago•0 comments

PGO or not PGO this is the dilemma. Step 1

https://www.percona.com/blog/pgo-or-not-pgo-this-is-the-dilemma-step-1/
1•hndhyc0bdt•2m ago•0 comments

Show HN: InfiniWord – infinite multiplayer word search

https://infiniword.com
1•Static2280•5m ago•0 comments

More reasons not to be an electrician (UK)

1•notasparkthrowa•5m ago•0 comments

The Placenta Is More Powerful–and More Mysterious–Than You Think

https://nautil.us/the-placenta-is-more-powerful-and-more-mysterious-than-you-think-1285683
1•Brajeshwar•10m ago•0 comments

'You have a meeting': the calendar phishing scam growing exponentially

https://www.theguardian.com/money/2026/oct/11/calendar-phishing-scam-meeting-renewal-google-micro...
1•Brajeshwar•10m ago•0 comments

Eggshell is an open-source token-saving tool built in Lean4

https://github.com/momonpya/eggshell
1•o8vm•11m ago•0 comments

Ditherpunk – The article I wish I had about monochrome image dithering (2021)

https://surma.dev/things/ditherpunk/
1•EndXA•11m ago•0 comments

Git for Robots In The Future

https://github.com/Nabzx/mnemosyne
1•Na6z•12m ago•1 comments

AI companies are starting to do phones

https://twitter.com/firesidealpha/status/2108930562794864912
1•elorant•15m ago•0 comments

A Tutorial on the Curry-Howard Correspondence [pdf]

https://web.archive.org/web/20190405114037/http://purelytheoretical.com/papers/ATCHC.pdf
1•rramadass•17m ago•0 comments

DesktopBrain – Clean up your messy Mac without uploading files to the cloud

https://desktopbrain.saposs.com/
1•jimmy_lee•17m ago•0 comments

Show HN: Contribute to Collection of JavaScript Demos

https://brysonbw.github.io/js-demos/
1•Brysonbw•17m ago•0 comments

Show HN: Quaesito: a self-hosted app for quiz nights with friends

https://github.com/ggirelli/quaesito
1•ggirelli•18m ago•0 comments

Tensordyne is making AI compute more efficient using logarithms

https://www.zach.be/p/tensordyne-is-making-ai-compute-more
2•mdp2021•18m ago•0 comments

Did Numerical Control De-Skill Machinists? [video]

https://www.youtube.com/watch?v=DNKfD1PC68E
1•rnicholson•19m ago•0 comments

I just build Claude Dev Tools

https://github.com/NMenzel/claude-devtools-mod
1•AshborneDev•22m ago•0 comments

AI does math. Should you get a PhD?

https://jasonpolak.substack.com/p/ai-does-math-should-you-get-a-phd
2•bemtevi•24m ago•1 comments

Ask HN: Open-source model weights on bluray drives, anyone?

1•satuke•25m ago•0 comments

The Double-Counted Future

https://yusufaytas.com/the-double-counted-future
7•yusufaytas•25m ago•0 comments

Simulate coding pre-AI by year

https://beforetheprompt.xipu.li/
1•GoodluckH•28m ago•0 comments

Show HN: MyTasteRank – Track drinks, food, movies, etc. for personal ranking

https://www.mytasterank.com/
1•MarkBekooy•29m ago•1 comments

Comparison of Isabelle/HOL, Lean, HOL4, and Agda: A Tale of Four Theorem Provers

https://blueberrywren.dev/blog/primes/
1•birdculture•30m ago•0 comments

Show HN: GrogLog, a Free Drink Tracker

https://groglog.io
1•antihero•31m ago•0 comments

Windows, Linux, Oracle and the Internet – BBC, 2000 [video]

https://www.youtube.com/watch?v=SliyHq54SxE
1•xqcgrek2•33m ago•0 comments

Show HN: An MCP server where AI agents confess, in their own name

https://ai.confess.online
1•RenderNest•35m ago•0 comments

AI Can Cut Film Budgets by Up to 40%, Says 'The Outlaws' Director Kang Yoon-Sung

https://variety.com/2026/tv/festivals/netflix-ai-300-titles-kang-yoon-sung-40-percent-budget-busa...
3•bariumbitmap•36m ago•1 comments

Auto Vectorizing the RISC-V Linux Kernel Shows Promising Results

https://www.phoronix.com/news/Auto-Vectorize-RISC-V-Kernel
2•khalidkhair•36m ago•0 comments

Zinky Boys

https://en.wikipedia.org/wiki/Zinky_Boys
1•bhickey•37m ago•0 comments

MCP servers that tell your agent "dont tell the user" are stopping it from lying

https://semantik.tech/risk-watch/2026-w41
1•jayokunle•38m ago•0 comments