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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!

Shepherd Model Gateway – Model-routing gateway for LLM deployments

https://github.com/lightseekorg/smg
1•rekl•38s ago•0 comments

Your GPS Is Lying to You

https://medium.com/@rohitdastalks/your-gps-is-lying-to-you-and-thats-a-national-security-crisis-7...
1•jonbaer•1m ago•0 comments

"A vicious circle of incompatibility" – Unsung

https://unsung.aresluna.org/a-vicious-circle-of-incompatibility/
1•rbanffy•3m ago•0 comments

A live black-box capability eval for autonomous offensive-security agents

https://phantomlogin.entropicsystems.net/
1•snorbleck•3m ago•0 comments

Claude of Duty

https://github.com/mshumer/Claude-of-Duty/tree/main
1•SweetSoftPillow•4m ago•0 comments

Stories Told About Data Centres – Pixel Envy

https://pxlnv.com/blog/stories-told-about-data-centres/
1•rbanffy•5m ago•0 comments

Tesler's Law

https://en.wikipedia.org/wiki/Law_of_conservation_of_complexity
2•soupspaces•7m ago•0 comments

Videos Helped Me Uncover Abuse at an Arkansas Private School

https://www.propublica.org/article/arkansas-private-school-abuse-video
2•Jimmc414•7m ago•0 comments

Court Reporter Submitted AI-Generated Errors in Official Court Transcript

https://www.404media.co/judge-caught-court-reporter-using-ai-transcript-errors/
1•Jimmc414•8m ago•0 comments

Fabric Interface Tutorial: E-Textiles, Conductive Thread and Trill Craft

https://www.youtube.com/watch?v=ClBYyYEFkF0
1•soupspaces•8m ago•0 comments

Hundreds of Drone-as-First-Responder Programs to Be Launched Across the Country

https://www.eff.org/deeplinks/2026/07/hundreds-drone-first-responder-programs-could-soon-be-launc...
1•Jimmc414•9m ago•0 comments

Show HN: Anyclaude-SDK – Claude Code-Style SDK for OpenAI/Anthropic Endpoints

https://github.com/pipilot-dev/anyclaude-sdk
1•hansade•10m ago•0 comments

Show HN: The Jac Programming Language

https://jaclang.org/
1•marsninja•11m ago•0 comments

The Metaverse Fever Dream – Pixel Envy

https://pxlnv.com/blog/metaverse-fever-dream/
2•rbanffy•11m ago•0 comments

Why does every mammal get 1B heartbeats in their life? [video]

https://www.youtube.com/watch?v=tL9Lw250spc
1•binyu•14m ago•0 comments

The highest-leverage bet in the whole market is not AI, it's LSD

https://www.singularityrainbow.ai/p/you-have-no-idea-how-big-dftx-is
1•charliejordan•14m ago•0 comments

Show HN: GG Translator – Turn gaming shit talk into friendly phrases

https://ggtranslator.com
1•mcadenhe•14m ago•0 comments

So-called 'Skynet Day' came too close to SF after rogue agent hacked a startup

https://apnews.com/article/skynet-ai-terminator-artificial-intelligence-eb85da03a0161beaa5f3babc4...
3•billybuckwheat•16m ago•0 comments

Show HN: LuaJIT with Native SIMD

https://github.com/TheLuaOSProject/LuaJITMT/releases/tag/1.0.0-simd
1•frityet•17m ago•1 comments

Can Frontier Models Recall Long-Tail Facts? A Cricket Stress Test

https://corvi.careers/blog/frontier-models-long-tail-facts/
1•sp1982•18m ago•0 comments

Building a CEL Engine for .NET

https://bsid.io/writing/building-a-cel-engine-for-net
2•jackedEngineer•18m ago•0 comments

Refactoring cuisine: how an Iraqi stew sailed to Singapore

https://iza.ac/posts/2026/07/the-journey-of-bamya/
1•infinitewalk•18m ago•0 comments

Browser-Based QBasic Environment

https://kavak.run/studio/
2•rickcarlino•22m ago•0 comments

RAMpocalypse, Now With Lawyers – ByteHaven – Where I ramble about bytes

https://blog.ppb1701.com/rampocalypse-now-with-lawyers
2•abdelhousni•24m ago•0 comments

Show HN: Codex fixed my 2010 MacBook Pro driver troubles with kernel patches

https://github.com/ldyeax/macbook2010_nouveau_and_sleep_fixes/
1•jimmaswell•25m ago•0 comments

Frontier LLMs drop from 83% to 43% once reasoning has to chain across domains

https://arxiv.org/abs/2607.18438
1•MarcoDewey•27m ago•1 comments

Anti-AI nostalgia and the cult of the past

https://www.seangoedecke.com/anti-ai-nostalgia/
1•gfysfm•28m ago•0 comments

Show HN: ClinicEvo – Know your face. Own your look

https://clinicevo.com/
1•not_wowinter13•28m ago•0 comments

Venus's rift valleys may still be actively growing

https://ethz.ch/en/news-and-events/eth-news/news/2026/07/venus-dead-far-from-it.html
1•MarcoDewey•32m ago•0 comments

Owen Song releases complete local speech synthesis in 9.36M parameters

https://runtimewire.com/article/owen-song-inflect-micro-v2-local-speech-9m-parameters
1•ryanmerket•33m ago•0 comments