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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!

E2B Embed

https://e2b.dev/resources/introducing-e2b-embed
1•gmays•57s ago•0 comments

"Told Apart"

https://frogulis.net/writing/micro/told-apart
1•frogulis•1m ago•0 comments

Drones buzz overhead, troops hunker underground in Ukraine's hellish kill zone

https://www.npr.org/2026/10/05/nx-s1-5925803/drones-buzz-overhead-troops-hunker-underground-in-uk...
1•balderdash•6m ago•0 comments

Show HN: Launch Your N8n Integration

https://www.nativeship.io
1•bhavyshekhaliya•20m ago•2 comments

Show HN: I built an application to work with multiple coding agents

https://crowsnest.app/
1•teivz•21m ago•1 comments

LLMs may have immensely helped my RSI

https://vaughanhilts.me/2026/10/05/llms-immensely-helped-my-rsi.html
1•vaughands•22m ago•1 comments

Iseberg – The PowerShell ISE Reimagined with Avalonia and PowerShell 7

https://github.com/adamdriscoll/iseberg
1•l33t_d0nut•22m ago•0 comments

The Return of the Cutting-Off Way

https://www.liberalcurrents.com/the-return-of-the-cutting-off-way/
1•Analemma_•28m ago•0 comments

Why Common Lisp Is Now the Best Programming Language

https://www.vivienhenz.com/common-lisp
2•misterchocolat•31m ago•1 comments

T-2 month: August, 1957, Magazine "Radio" №8, USSR

https://twitter.com/PicoSputnik/status/2107300923701674356
1•Ontolorg•33m ago•1 comments

Even If It's Real, It's Fake

https://www.todayintabs.com/p/even-if-it-s-real-it-s-fake
1•mooreds•34m ago•0 comments

Edit Documents in ChatGPT

https://revise.io/articles/edit-documents-in-chatgpt
1•artursapek•36m ago•0 comments

T-2 month: August, 1957, Magazine "Radio" №8, USSR

https://twitter.com/PicoSputnik/status/2107299066027585673
1•Ontolorg•37m ago•1 comments

AI Opportunity Scan

https://msa-mail.com/ai-scan/
1•mainstreetai•37m ago•0 comments

I got a project to 27 GitHub stars, one burst of motivation at a time

https://quickthoughts.ca/posts/listenr-from-idea-to-27-stars/
1•quickthoughts•38m ago•0 comments

Don't Publish with Oxford University Press

https://buymeacoffee.com/ayjay/the-last-word-all-this
1•barry-cotter•40m ago•0 comments

VeloGB10 – A GB10-specific inference engine

https://github.com/sf-stav/veloGB10
1•colingauvin•42m ago•1 comments

A hacker's guide to bending the universe (2016)

https://aresluna.org/a-hackers-guide-to-bending-the-universe/
1•colinprince•43m ago•0 comments

Wiki Time Machine

https://timemachine.carbonadoks.com
1•kinduff•44m ago•0 comments

SovereignLab, a Public-Source Intel Digest

https://github.com/paulpdelancy-spec/SovereignLab-Intake-Registry-Public/blob/main/README.md
1•Pcumberbatch•44m ago•0 comments

Ask HN: Why does Astra compact context so frequently vs. Fable?

1•yesitcan•45m ago•0 comments

Pages with the Most Revisions

https://en.wikipedia.org/wiki/Special:MostRevisions
2•imwally•50m ago•0 comments

Language Models That Play Chess (2700 Elo) and Explain Their Moves

https://arxiv.org/abs/2610.03695
1•buzzy_hacker•1h ago•0 comments

Ask HN: What do you think about AI generated slides for conferences?

2•Hixon10•1h ago•1 comments

Oracle Head of Data Centres Latam Interview with Entelligencia

https://entelligencia.report/weekly/03/
1•entelligencia7•1h ago•0 comments

Export Mac OLM to PST

https://www.perfectdatasolutions.com/en/olm/olm-to-pst-converter.html
1•tieanderson•1h ago•0 comments

Show HN: Figxit, IDE-style autocomplete for the macOS terminal

https://github.com/en3sis/figxit
2•en3sis•1h ago•0 comments

Intelligent MFA: Stop Challenging Logins That Don't Deserve It

https://fusionauth.io/blog/intelligent-mfa-stop-challenging-logins
1•mooreds•1h ago•0 comments

Alleged NATO spy case brings 'some serious lessons' for Canada, says minister

https://www.cbc.ca/news/politics/nato-spy-arrest-belgium-9.7369427
2•snarky-comments•1h ago•0 comments

Show HN: LopeBase – monitor your SaaS side projects, automate content

https://lopebase.com/
1•ghosts_•1h ago•0 comments