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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•7mo 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!

AI Garden Design Software for Homeowners

https://hadaa.pro/
1•Fh_•2m ago•1 comments

A FOSS Pocket/Instapaper/Wallabag Alternative with OPDS Support Written in Go

https://readeck.org/en/
1•Curiositry•3m ago•0 comments

Example-Custom-GitHub-Action

https://github.com/x-504/example-custom-github-action
1•asteriskeng•5m ago•0 comments

Show HN: llmnop – Rust CLI for benchmarking LLM endpoints

https://github.com/jpreagan/llmnop
1•jpreagan•10m ago•0 comments

The AI Learning Platform That You Need

https://www.brighteraai.fun/
1•sepiol350•12m ago•0 comments

'Blind into Caracas' – By James Fallows

https://fallows.substack.com/p/blind-into-caracas
1•MaysonL•13m ago•0 comments

Show HN: LoongFlow – An evolutionary framework for self-optimizing Agents

https://github.com/baidu-baige/LoongFlow
1•FreshmanD•18m ago•1 comments

Databases in 2025: A Year in Review

https://www.cs.cmu.edu/~pavlo/blog/2026/01/2025-databases-retrospective.html
3•viveknathani_•28m ago•0 comments

Show HN: I built ZoneBar – a macOS menu bar app to see all your time zones

https://apps.apple.com/ca/app/zonebar-time-zones/id6756977321?mt=12
1•fx31xo•29m ago•0 comments

Microsoft Has a Nickname "Microslop"

3•DinakarS•31m ago•3 comments

Show HN: Live VNC for web agents – debugging native captcha on Cloud Run

https://www.rtrvr.ai/blog/live-vnc-takeover-serverless-chrome
2•quarkcarbon279•33m ago•1 comments

Now you can star Wallabag entries from the comfort of your Kobo e-reader

https://www.autodidacts.io/star-wallabag-entry-from-koreader/
2•Curiositry•34m ago•0 comments

A spider web unlike any seen before (2025)

https://www.nytimes.com/2025/11/08/science/biggest-spiderweb-sulfur-cave.html
5•juanplusjuan•36m ago•1 comments

Show HN: A diagnostic report for students studying math

https://books.innings2.com/pages/cbse_math_worksheets.html
1•nutanc•39m ago•0 comments

LLMs Are Currently Not Helpful at All for Math Research: Hamkins

https://officechai.com/ai/llms-are-currently-not-helpful-at-all-for-math-research-give-garbage-an...
15•ablaba•41m ago•6 comments

Estonian telecoms: Restricting fake numbers is not a magic wand

https://news.err.ee/1609897250/estonian-telecoms-restricting-fake-numbers-is-not-a-magic-wand
1•marklit•43m ago•0 comments

Why Precision and Recall Matter More Than Ever in Agentic Systems

https://kulekci.medium.com/why-precision-and-recall-matter-more-than-ever-in-agentic-systems-4973...
1•kulekci•44m ago•0 comments

Show HN: NetDiag.Dev – Website Connectivity Diagnostics API

https://netdiag.dev/
1•xakpc•44m ago•0 comments

Securing Agentic AI Fundamentals – No BS Guide – Part 1

https://www.subhashdasyam.com/2025/12/securing-agentic-ai-architecture.html
1•dxsecarch•47m ago•0 comments

Show HN: An interpretable "taste map" of my Spotify library

https://apmoverflow.xyz/on-dimensions-of-taste/
1•IslamTayeb•50m ago•0 comments

Language Is the New UI

https://bytesauna.com/post/language-user-interface
1•mapehe•51m ago•1 comments

The Several Million Dollar Bug (2014)

https://jacquesmattheij.com/the-several-million-dollar-bug/
1•harryday•51m ago•0 comments

Show HN: Bank Parser – Convert Chase/Boa PDFs to QuickBooks Excel (99% Accuracy)

https://bank-parser.com
1•zetbaur•53m ago•0 comments

Wallabag Instance List

https://www.autodidacts.io/wallabag-instance-list/
1•Curiositry•55m ago•0 comments

End of Life for Lightstep/Cloud Observability, March 1, 2026

https://docs.lightstep.com/changelog/eol-notice
1•zdkaster•55m ago•0 comments

The Closed-Loop Manifesto

https://jakefeala.substack.com/p/the-closed-loop-manifesto
1•bifftastic•1h ago•0 comments

Show HN: Blimp – AI-Native Productivity Suite to Unify Your Tools

https://getblimpy.cloud
1•Gabiro_Arnauld•1h ago•0 comments

Itanium

3•topspin•1h ago•1 comments

E Series of Preferred Numbers

https://en.wikipedia.org/wiki/E_series_of_preferred_numbers
3•thunderbong•1h ago•0 comments

Speed test pits six generations of Windows against each other

https://www.tomshardware.com/software/windows/speed-test-pits-six-generations-of-windows-against-...
2•XzetaU8•1h ago•0 comments