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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!

HN has lost the joy for me

1•trencedamp•2m ago•0 comments

Show HN: Neptune, a free and open-source terminal built in Rust

https://github.com/zevem/neptune
1•gabo2006•3m ago•0 comments

Longest traffic jam (number of vehicles): Berlin 1990

https://www.guinnessworldrecords.com/world-records/461618-longest-traffic-jam-number-of-vehicles
2•rguiscard•4m ago•0 comments

Stack Overflow Developer Survey – Number of HN Comments by Year (Last 8 Years)

https://i.imgur.com/wN2XVEE.png
1•nomilk•14m ago•0 comments

The Fever Has Broken – Why "Chinamaxxing" Matters

https://www.sinicapodcast.com/p/the-fever-broken-for-now
1•verdverm•15m ago•0 comments

Licensing costs driving 90 percent of VMware users to explore options: Survey

https://arstechnica.com/information-technology/2026/10/operational-complexity-a-top-barrier-for-v...
2•joozio•19m ago•0 comments

Vanishing Crossword

https://wordmaze.dev/
2•sidPhoenix17•21m ago•0 comments

Software developers are not okay

https://www.baldurbjarnason.com/2026/05-software-developers-are-not-okay/
2•equalsione•23m ago•0 comments

What's missing from the lethal injection conversation

https://www.npr.org/2026/10/07/nx-s1-5991797/christa-pike-execution-injection-alive-dead
2•theanonymousone•27m ago•0 comments

I'm starting a company that uses no AI, A letter from San Francisco, October '26

https://no-ai-tau.vercel.app/
2•normanvalentine•31m ago•0 comments

CVE-2026-63277 – LibreOffice Remote Code Execution

https://github.com/advisories/GHSA-5JX8-5G92-5W59
1•mritzmann•32m ago•0 comments

DBX: Database Manager

https://dbxio.com/en
1•thunderbong•33m ago•0 comments

LGTM: A parody of modern AI adoption in the tech industry [video]

https://www.youtube.com/watch?v=3TNpOD6bov8
3•alexeyza•35m ago•0 comments

The one ring problem: abstraction and our quest for power (2018)

https://www.tedinski.com/2018/01/30/the-one-ring-problem-abstraction-and-power.html
2•signa11•37m ago•0 comments

Python none coalescing? and?= pep 824

https://peps.python.org/pep-0824/
3•gigatexal•39m ago•0 comments

Show HN: Chorus – Ask multiple AIs at once on Mac

https://github.com/askchorus/chorus
2•smileduck•39m ago•0 comments

Jaguar targets young Americans with Type 01 EV – it's too long for UK parking

https://www.theguardian.com/business/2026/oct/07/jaguar-launch-type-01-electric-vehicle
3•porterde•39m ago•0 comments

Tescreal hallucinations: Psychedelic and AI hype as inequality engines

https://akjournals.com/view/journals/2054/7/S1/article-p22.xml
2•gushogg-blake•40m ago•0 comments

Reframe an AI Short Film [video]

https://www.youtube.com/watch?v=9MlK5VTMD88
2•daverol•41m ago•0 comments

Show HN: Truth Firewall – Don't trust your coding agent when it says DONE

https://github.com/aldi949/truth-firewall
2•Aldi949•43m ago•0 comments

Show HN: Sayrud – Yet Another Collaborative Spreadsheet

https://github.com/sayrud/sayrud
2•E99p1ant•45m ago•0 comments

A cyberpunk HUD overlay for Discord in pure Vanilla JavaScript

https://github.com/Doomeec/discord-quest-hud
2•doomeec•49m ago•0 comments

Show HN: Slopguesser – can you tell if code was written by AI or a human?

https://slopguesser.dev
2•marcascode•50m ago•0 comments

OMG's Meta-Object Facility

https://www.omg.org/mof/
3•andsoitis•54m ago•0 comments

Show HN: Undersheet

https://undersheet.app/
2•joshuawithers•59m ago•0 comments

OpenAI unleashes hundreds more math results upon a field in shock

https://www.scientificamerican.com/article/openai-unleashes-hundreds-more-math-results-upon-a-fie...
4•mr_fantastic•1h ago•1 comments

DeepSeek v4.1 Flash at 378 tok/s 99.7% Cache hit rate

https://runinfra.ai/inference-api/deepseek-v4-1-flash
1•OsamaJaber•1h ago•0 comments

TIL how to deeplink all the things

https://www.autodidacts.io/how-to-deeplink-to-specific-part-of-text-audio-video-pdf-image/
1•Tomte•1h ago•0 comments

FreeLLMAPI – One OpenAI-Compatible API for Multiple Free LLM Providers

https://github.com/tashfeenahmed/freellmapi
1•Moon_Y•1h ago•1 comments

Why Do Grains Defy Gravity? [video]

https://www.youtube.com/watch?v=F2M2aRXI8lc
1•dataflow•1h ago•0 comments