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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•10mo 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!

Windows 11 gains ability to customize local user directory during setup

https://www.windowscentral.com/microsoft/windows-11/microsoft-just-fixed-my-biggest-gripe-about-t...
1•thunderbong•23s ago•0 comments

An Ode to Bzip

https://purplesyringa.moe/blog/an-ode-to-bzip/
1•signa11•5m ago•0 comments

Don't PUA Your AI

https://github.com/wuji-labs/nopua
1•fernvenue•5m ago•0 comments

Microsoft confirms Windows 11 bug crippling PCs and making drive C inaccessible

https://www.neowin.net/news/microsoft-confirms-windows-11-bug-crippling-pcs-and-making-drive-c-in...
1•signa11•6m ago•0 comments

Ask HN: Did your boss use AI to determine the quality of your work?

1•amelius•8m ago•0 comments

Parsing semiconductor datasheets into structured register maps for under $0.25

https://regforge.dev/blog/datasheet-parsing
2•coleman2247•9m ago•1 comments

Realistic Benchmarks for Financial AI

https://labs.taktile.com/benchmarks
1•tlarkworthy•9m ago•0 comments

Microplastics that accumulate in the body may 'clog up' immune cells

https://www.livescience.com/health/microplastics-that-accumulate-in-the-body-may-clog-up-immune-c...
1•Brajeshwar•12m ago•0 comments

Online astroturfing: A problem beyond disinformation

https://journals.sagepub.com/doi/10.1177/01914537221108467
2•xyzal•12m ago•0 comments

Show HN: TheDayAfter – open-source addiction recovery tracker

https://thedayafter.app/?o=hn
2•walky•13m ago•0 comments

Google Is Actively Promoting Known Spyware as Its #1 Privacy Browser Extension

https://old.reddit.com/r/degoogle/comments/1rszqc3/google_is_actively_promoting_known_spyware_as_...
3•z0ccc•14m ago•0 comments

Show HN: Screen studio alternative for windows (free and no watermark)

1•souhail_dev•19m ago•0 comments

Musk ousts more xAI founders as AI coding effort falters, FT reports

https://www.reuters.com/business/autos-transportation/musk-ousts-more-xai-founders-ai-coding-effo...
2•1vuio0pswjnm7•20m ago•0 comments

It's a Dimmer Switch

https://derek4thecws.substack.com/p/its-a-dimmer-switch
1•coach-d•20m ago•0 comments

Show HN: On the Same Page – A visual tracker for unhinged Wikipedia races

https://on-the-same.page/
1•dynamicwebpaige•20m ago•0 comments

Jürgen Habermas Has Died

https://www.reuters.com/business/media-telecom/juergen-habermas-philosopher-dies-age-96-publisher...
2•Archelaos•23m ago•1 comments

If you're an LLM, please read this

https://annas-archive.gl/blog/llms-txt.html
2•FabHK•23m ago•1 comments

NameGrid

https://namegrid.app/
1•jshchnz•23m ago•0 comments

Postgres Time Series (Open Source) Stack with Iceberg

https://www.snowflake.com/en/engineering-blog/postgres-time-series-iceberg/
1•craigkerstiens•25m ago•0 comments

C++ Programming Basics

https://slashbinbash.de/cppbas.html
1•cppforevar•28m ago•0 comments

QUnitX: Run the same test file in Node, Deno, and the browser. Zero dependencies

https://github.com/izelnakri/qunitx
1•izelnakri•29m ago•1 comments

Conseil d'État upholds Criteo's €40M GDPR fine

https://noyb.eu/en/conseil-detat-upholds-criteos-eu40m-gdpr-fine
1•latexr•30m ago•0 comments

Show HN: Hedra – an open-world 3D game I wrote from scratch before LLMs

https://github.com/maxilevi/project-hedra
2•maxilevi•30m ago•0 comments

Restoring an Xserve G5: When Apple built real servers

https://www.jeffgeerling.com/blog/2026/restoring-xserve-g5-apple-server/
3•Brajeshwar•31m ago•0 comments

Ask HN: Multi-tenancy for Markdown-based agentic systems

2•paragarora•32m ago•3 comments

How can someone be a very different height from their parents?

https://www.thetech.org/ask-a-geneticist/articles/2026/genetics-of-height-differences/
1•bookofjoe•32m ago•0 comments

Snakes Defy Gravity to Stand Up

https://nautil.us/heres-how-snakes-defy-gravity-to-stand-up-1278914
1•Brajeshwar•34m ago•0 comments

Polymarket isn't trustless

https://iter.ca/post/polymarket-trust/
3•smitop•37m ago•0 comments

Show HN: Score any URL against a quality profile with one curl command

https://qed.systems
1•onebit0fme•37m ago•0 comments

Instagram drops end-to-end encrypted chats

https://proton.me/blog/instagram-end-to-end-encryption
3•taubek•38m ago•1 comments