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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!

Maurice Wilkes: changing hardware problems into software problems

https://nirmalutwani.substack.com/p/when-changing-a-computer-meant-rewiring
1•nutwani91•6m ago•1 comments

What % of your usage is open source vs. frontier models?

1•hardcapital•9m ago•0 comments

Lightport – a maintained fork of Portkey AI gateway

https://github.com/glama-ai/lightport
1•punkpeye•9m ago•0 comments

Nadella criticizes Anthropic's Fable for being 'editorially controlled'

https://www.cnbc.com/2026/07/16/microsoft-ceo-says-anthropic-fable-request-policy-doesnt-make-sen...
1•Exoristos•9m ago•0 comments

SpaceX Starship launch aborted on the pad at the last moment

https://apnews.com/article/starship-spacex-rocket-musk-nasa-455927b93b0fdc5512a4567a53eb3228
1•1vuio0pswjnm7•11m ago•0 comments

Xi pitches China as leader of new global AI order, challenging US dominance

https://www.reuters.com/world/asia-pacific/chinas-xi-promotes-chinas-commitment-ai-access-speech-...
2•chvid•11m ago•2 comments

OpenAI faces sanctions bid as newspapers say ChatGPT was trained on stolen news

https://www.latimes.com/business/story/2026-07-10/openai-faces-sanctions-bid-as-newspapers-say-ch...
1•1vuio0pswjnm7•13m ago•0 comments

EU forces Google to share search data and open Android to rival AI companies

https://apnews.com/article/eu-google-android-antitrust-184b3067120e56d858cb8c81aee26d45
1•1vuio0pswjnm7•16m ago•0 comments

Neko Health raises $700M Series C ahead of US launch

https://www.nekohealth.com/gb/en/press/neko-health-raises-usd700m-series-c-ahead-of-us-launch
1•doppp•21m ago•0 comments

Show HN: 1board for the Whole World

https://1board.org/
1•Naulian•23m ago•0 comments

I measured whether AI writes hollower tests than humans. It doesn't

https://driivai.github.io/voidguard/
1•BenjiFranclin•30m ago•0 comments

OpenAI encrypts Codex agent instructions, blocking local audit trail

https://www.theregister.com/ai-and-ml/2026/07/15/openai-hides-codex-agent-instructions-behind-enc...
1•nyku•32m ago•0 comments

The Mar-a-Lago Accord's Economic Ripple Effect Widens

https://www.cfr.org/articles/the-mar-a-lago-accords-economic-ripple-effect-widens
1•simonebrunozzi•33m ago•0 comments

Show HN: Scribe, a CLI that builds AI agent memory from your repos and sessions

https://getscribe.dev/
2•quatermain•35m ago•0 comments

Show HN: No AI, just plain old JavaScript and Python RAD

https://jam-py-v7.github.io/jam-py-v7/
1•jampy-v7•36m ago•0 comments

Guided Access in iPad with Brightness Shortcut

https://rdamodar.com.np/thought/2026/07/guided-access-in-ipad-with-brightness-shortcut/
1•fhcxvbdb•38m ago•0 comments

Your Eye Health: It's Time to Talk About It

https://codedynasty.dev/posts/your-eye-health-its-time-to-talk-about-it
1•66yatman•39m ago•3 comments

China Just Dropped Another Bomb on America's Frontier AI Companies

https://gizmodo.com/china-just-dropped-another-bomb-on-americas-frontier-ai-companies-2000786670
2•yogthos•41m ago•0 comments

The Fight over Humanoid Robots Has Shut Down a Car Factory for the First Time

https://www.wsj.com/business/autos/the-fight-over-humanoid-robots-has-shut-down-a-car-factory-for...
1•breve•41m ago•0 comments

Country Draw

https://country-draw.vercel.app/
1•imbobbytables•41m ago•0 comments

Ente's business metrics are open now

https://ente.com/blog/open/
2•mulmen•43m ago•0 comments

Most Supreme Court Rulings are Secretive Votes with Little Justification

https://www.propublica.org/article/supreme-court-shadow-docket-rulings-milestone
3•WarOnPrivacy•45m ago•0 comments

Show HN: Plarza – Drag and drop social website builder

https://plarza.com/
2•sidny•48m ago•0 comments

Notebooker – Save now, understand later

https://notebooker.ai/
2•vismit2000•49m ago•0 comments

A decade and a half of instability: The history of Google messaging apps

https://arstechnica.com/gadgets/2021/08/a-decade-and-a-half-of-instability-the-history-of-google-...
2•doodlesdev•50m ago•0 comments

AI is changing what we can do. Who we become is still our choice

https://humanistreview.ai/issue-1/appiah-ai-moral-character/
1•Caiero•51m ago•0 comments

I got 500 installs on my first Quran app, then threw rebuild it

https://www.indiehackers.com/post/i-got-500-installs-on-my-first-quran-app-then-threw-the-whole-t...
2•cas8398•58m ago•0 comments

RCE, persistence in Litter Robot 5 Pro camera module

https://github.com/forrestblade/lr5-liberation
1•acevintagetura•59m ago•0 comments

A Statistical FX Factor Model

https://dm13450.github.io/2026/07/15/statistical-factor-model.html
1•dm13450•59m ago•0 comments

Icop – open-source local AI NSFW filter for VLC (no cloud, no telemetry)

https://github.com/asayed18/icop
1•asayd18•1h ago•0 comments