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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!

Stop Asking Claude to Agree with You

https://www.questionpro.com/engineering/engineering/developer%20tools/ai%20&%20machine%20learning...
1•skyDoesWork38•3m ago•0 comments

NASA's X-59 Aircraft Flies Supersonic for First Time

https://www.nasa.gov/aeronautics/x-59-first-supersonic-flight/
1•divbzero•7m ago•0 comments

SpaceX offers details on orbital data center satellites

https://spacenews.com/spacex-offers-details-on-orbital-data-center-satellites/
1•MrBuddyCasino•10m ago•0 comments

Show HN: I created an app to copy OTP from Google Voice to your macOS Clipboard

https://github.com/ptrinh/Notiful
1•ptrinh•16m ago•0 comments

iPhone almost like a birth control device, fertility rates falling after 2007

https://www.indiatoday.in/technology/news/story/iphone-almost-like-a-birth-control-device-fertili...
1•rustoo•18m ago•0 comments

Ask HN: Do you need go-to-market strategy at early stage?

1•2ero_wf•22m ago•0 comments

Built to benefit everyone: our plan By Sam Altman and Jakub Pachocki

https://openai.com/index/built-to-benefit-everyone-our-plan/
1•echan00•26m ago•1 comments

Show HN: Clawcall – give your self-hosted OpenClaw agent inbound phone calls

https://github.com/CODEANDTRUST/clawcall
1•pakbry•27m ago•0 comments

L'Affaire Siloxane

https://mceglowski.substack.com/p/laffaire-siloxane
1•idlewords•28m ago•0 comments

Make Something Wonderful

https://joshuawold.com/make-something-wonderful/
1•ethanplant•35m ago•0 comments

Vulnerability and malware checks in UV: uv audit, malware check in uv add, sync

https://astral.sh/blog/uv-audit
3•Terretta•38m ago•1 comments

OxyJen v0.5: a deterministic graph runtime for AI workflows

https://github.com/11divyansh/OxyJen
1•bdivyansh11•39m ago•0 comments

The Capability Curve Has No Memory

https://medium.com/@vektormemory/the-capability-curve-has-no-memory-7c5fe5cde09f
1•vektormemory•43m ago•1 comments

ThumbLoop: Thumbnails Which Get Clicks

https://loop-tube.com/blog/how-to-make-youtube-thumbnails
1•yashness•44m ago•0 comments

Apple Investors Give Lukewarm Reaction to New Siri, AI Platform

https://www.bloomberg.com/news/articles/2026-06-08/apple-unveils-next-generation-of-ai-platform-i...
1•petethomas•50m ago•0 comments

Gram Newton-Schulz: A Fast, Hardware-Aware Newton-Schulz Algorithm for Muon

https://tridao.me/blog/2026/gram-newton-schulz/
2•jxmorris12•51m ago•0 comments

Siri AI at WWDC 2026

https://simonwillison.net/2026/Jun/8/wwdc/
2•lumpa•58m ago•0 comments

I built a free car lease transfer marketplace after the paid ones burned me

https://www.trademylease.com
2•mknweb•1h ago•0 comments

CRDTs merge concurrent edits. Why not concurrent creation?

https://loro.dev/blog/mergeable-containers
2•czx111331•1h ago•0 comments

OpenLTM – Local, self-decaying memory for AI coding agents

https://github.com/RohiRIK/OpenLtm
2•RohiRik•1h ago•0 comments

What Apple Knows About AI That Silicon Valley Won't Admit

https://www.thealgorithmicbridge.com/p/what-apple-knows-about-ai-that-silicon
5•CharlesW•1h ago•3 comments

Kalshi and Polymarket crack down on paid influencers claiming election fraud

https://text.npr.org/nx-s1-5846806
4•1659447091•1h ago•1 comments

Designing an AI-Native Technical Screen

https://i0exception.substack.com/p/designing-an-ai-native-technical
1•i0exception•1h ago•0 comments

They Have yet to Sign a Lease. But They're Furious over $3,100 Rents

https://www.nytimes.com/2026/06/07/nyregion/housing-costs-young-people-nyc.html
1•littlexsparkee•1h ago•0 comments

AI Coding Agent Platform

https://app.nz/
1•jacobianhessian•1h ago•0 comments

Show HN: Built an open-source local firewall for AI coding agents

2•ashishp15•1h ago•0 comments

NPM-Scan v1.4.1: Detecting IronWorm, Miasma Escalated, and Dependency Confusion

https://www.npmjs.com/package/@lateos/npm-scan
1•lateos-ai•1h ago•0 comments

Queues Don't Fix Overload (2014)

https://ferd.ca/queues-don-t-fix-overload.html
1•locknitpicker•1h ago•0 comments

Universal XSS in Firefox Focus for iOS

https://github.com/v12-security/pocs/tree/main/firefox
4•ledoge•1h ago•0 comments

Organizations Drift into Politics: A Follow-up to Game Theory Patterns at Work

https://daeus.blog/2026/06/08/how-organizations-drift-into-politics/
4•kurinikku•1h ago•0 comments