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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!

Show HN: Jack the Snipper – Paste HTML or rich text, get clean plain text back

https://snipper.kreisvier.ch/
1•shipcraft•11s ago•0 comments

How Much of the Internet Is Written with AI?

https://www.pewresearch.org/data-labs/2026/08/20/how-much-of-the-internet-is-written-with-ai/
1•thehoff•2m ago•0 comments

Show HN: Tavi – A pet health tracker that works offline, with no account

https://tavi.pet/
1•abdghani•9m ago•0 comments

Panic passes Trump tariff refunds back to the Playdate customers who paid them

https://help.play.date/orders/tariffs/
1•huhtenberg•10m ago•0 comments

Show HN: Live football data. Clear patterns. Smart bets

https://valuestats.com/
1•not_wowinter14•10m ago•0 comments

LLM Cliché Highlighter

https://tools.simonwillison.net/llm-cliche-highlighter
2•rzk•11m ago•0 comments

Kojugate: Graph-native multiphysics simulation engine and digital twin

https://www.konjugate.com/
1•zenin•17m ago•1 comments

The Language of Headlines

https://daily.jstor.org/how-does-the-language-of-headlines-work-the-answer-may-surprise-you/
1•bookofjoe•18m ago•0 comments

One of east coast's largest datacenters accused of 'violating federal law'

https://www.theguardian.com/environment/2026/aug/27/new-jersey-vineland-datacenter-permits
1•sseagull•19m ago•0 comments

Scanning 170M lines of code: 44% of AI-found critical vulnerabilities were FP

https://corporate.comcast.com/stories/exploratory-vs-deterministic-assessments
1•officialhocc•19m ago•0 comments

Show HN: MCP server that drives the browser you are signed into

https://github.com/t3ratech/mcp-session-bridge
2•tkaviya•20m ago•0 comments

Assessly

https://assessly.app
1•manytduarte•21m ago•0 comments

LLMs are multi-layered user interfaces

https://www.gtothesquare.com/llms-the-multi-layered-user-interface
1•gtothesquare•26m ago•0 comments

Performing Digital Surgery to Fix MIDIs for My Hardware (My Post Was Wrong)

https://www.mistys-internet.website/blog/blog/2026/08/25/how-i-fixed-an-mt-32-midi-soundtrack-for...
2•robin_reala•32m ago•0 comments

Show HN: Public MCP for Greek price comparison (no API key)

https://www.bestprice.gr/mcp
1•phaistonian•33m ago•0 comments

Quest for eternal dock on Wayland – lambdock (C and GTK4 and Lisp Guile Scheme)

https://jointhefreeworld.org/blog/articles/gnu-linux/quest-for-eternal-dock/index.html
1•jjba23•37m ago•0 comments

Intel Linux Driver Orphaned for Limiting RF Exposure to Humans

https://www.phoronix.com/news/Intel-Linux-SAR-Driver-Orphaned
3•rbanffy•38m ago•0 comments

Making Your Data Ready for Agentic AI

https://martinfowler.com/articles/making-data-ready-for-agentic-ai.html
1•javaeeeee•40m ago•0 comments

AI and Cognitive Science Redefine Knowledge Retention

https://www.technology.org/2026/08/28/how-artificial-intelligence-and-cognitive-science-are-redef...
1•aledevv•41m ago•0 comments

Show HN: Less Paper – native iOS/iPadOS client for Paperless-ngx

https://github.com/plu/less-paper
1•jplunien•42m ago•0 comments

Visa USA Interchange Reimbursement Fees [pdf]

https://usa.visa.com/content/dam/VCOM/download/merchants/visa-usa-interchange-reimbursement-fees.pdf
2•simonebrunozzi•43m ago•0 comments

IBM's new Granite 4.2 models ride the wave of interest in local LLMs

https://arstechnica.com/ai/2026/08/ibms-new-granite-4-2-models-ride-the-wave-of-interest-in-local...
1•rbanffy•47m ago•0 comments

Gilad Bracha on managing dependencies in Smalltalk

https://twitter.com/Gilad_Bracha/status/2093106007618834451
1•tosh•47m ago•0 comments

Difference-in-Differences on a Censored Rating Scale Can Manufacture an Effect

https://arxiv.org/abs/2608.27309
2•sbulaev•48m ago•0 comments

"they are illegal labor practices" Harmeet K. Dhillon comments on H1B abuse

https://twitter.com/AAGDhillon/status/2093135087428878720
3•AnkitGuptaTruth•49m ago•0 comments

The thing that should exist when someone dies

https://www.planwithhestia.com/
1•linkhas•50m ago•2 comments

Ask HN: Built a free minimal daily planner, habit tracker and Pomodoro timer

1•farahhh•51m ago•0 comments

Lost in translation: What I learned trying to speedrun subtitles with LLMs

https://blog.burkert.me/posts/listers/
1•rudolftheone•52m ago•0 comments

What our AI guiding principles mean

https://wagtail.org/blog/what-our-ai-guiding-principles-actually-mean/
1•Bluestein•53m ago•1 comments

Terence Tao – How the top mathematician uses AI [video]

https://www.youtube.com/watch?v=Q8Fkpi18QXU
2•binyu•54m ago•0 comments