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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!

WallHop – 12ft.io is gone, so I built a replacement

https://wallhop.io/
1•TheWaffleHax•26s ago•0 comments

PSPi 6 – Raspberry Pi in a PSP

https://github.com/othermod/PSPi-Version-6
1•therepanic•1m ago•0 comments

Consistency is not a localized property

https://n-the-loop.com/blog/consistency-is-not-a-localized-property/
1•b-man•2m ago•0 comments

TypeScript-Native Frontend Framework

https://github.com/PureStackStudio/PureStack
1•koculu•3m ago•0 comments

Ask HN: Are iPhones the Handheld Version of Flock?

2•dfps•4m ago•0 comments

LLM Pareto Frontier over time [video]

https://www.youtube.com/watch?v=I01v36VIrno
1•ponyous•5m ago•1 comments

Stop Reaching for WebSockets by Default: WebSockets vs. SSE vs. Long Polling

https://medium.com/@anirbansingha20/websockets-vs-long-polling-vs-server-sent-events-fa9bc1644cb8
1•birdculture•17m ago•0 comments

Show HN: Free LED pixel-pitch and display-size calculators (open source)

https://boardsy.co.uk/free-exhibition-display-tools/
2•Boardsy•20m ago•0 comments

Supreme Court: 401(k) case over private funds and underperformance

https://www.cnbc.com/2026/10/10/supreme-court-case-401k-private-funds-intel.html
1•cramer4next•22m ago•0 comments

Pulp Cover Treatments of Classic Works of Literature

https://lithub.com/50-pulp-cover-treatments-of-classic-works-of-literature/
3•ohjeez•23m ago•0 comments

Veda: The First Agentic Hobby Operating System

https://github.com/vahmoh25/Veda
2•vahmohh•24m ago•0 comments

Microsoft Launches Surface Laptop Ultra, Surface RTX Spark Dev Box

https://www.servethehome.com/microsoft-launches-surface-laptop-ultra-surface-rtx-spark-dev-box/
1•teleforce•26m ago•0 comments

Ask HN: Why aren't Americans rising up against tipping?

2•bjourne•26m ago•1 comments

'We cannot accept foxes in our landscape': the plan to save Australia's wildlife

https://www.theguardian.com/australia-news/2026/oct/11/fox-australia-threatened-native-species-wi...
1•cisc•28m ago•0 comments

A minimal Rust TUI for managing GitHub repos and branches

https://github.com/jorgeandrecastro/github-workflow
2•drew0670•29m ago•0 comments

The 'black box' wastewater trade that rakes in millions for UK utility companies

https://www.theguardian.com/environment/2026/oct/09/uk-water-companies-industrial-commercial-wast...
3•cisc•34m ago•0 comments

Autonomous Delivery Skill

https://gist.github.com/EvanBoyle/8c1a97f682d92dab8c09d0e1ea73f4a0
2•gfortaine•38m ago•0 comments

Anthropic Bans Cruelty to Claude, Still Won't Say What It Protects

https://rews.cc/a/anthropic-bans-cruelty-to-claude-still-won-t-say-what-it-pro-bd99f6
37•ojosilva•38m ago•45 comments

Will We Ever Understand Dementia?

https://www.nytimes.com/2026/10/10/science/will-we-ever-understand-dementia.html
2•bookofjoe•38m ago•1 comments

Show HN: ISA Workbench – Classify and explore binaries in the browser

https://zr.ax/
5•19h•39m ago•0 comments

Microsoft CEO Nadella Calls for 'Emergency Brake' on Advanced AI

https://www.bloomberg.com/news/articles/2026-10-10/microsoft-ceo-nadella-calls-for-emergency-brak...
6•sbulaev•40m ago•0 comments

Show HN: TruthBeacon – Open-source Discord moderation app in Tauri and Rust

https://github.com/boredpolymath/truth-beacon
2•boredpolymath•50m ago•0 comments

Personal agents are not aligned with consumer long-term interests

https://twitter.com/BrendanFalk/status/2109068824293351774
2•brendanfalk•56m ago•0 comments

Vision for New Autonomous Warfare Command Laid Out by Pentagon

https://www.twz.com/news-features/vision-for-new-autonomous-warfare-command-laid-out-by-pentagon
4•cisc•58m ago•0 comments

How to Recover Your Yahoo! Groups from the Internet Archive (2021)

https://datahorde.org/how-to-recover-your-yahoo-groups-from-the-internet-archive/
2•turtleyacht•1h ago•0 comments

Show HN: Dewey: a connectome-driven fruit fly for your macOS menu bar

https://github.com/JorenSix/Dewey
3•joren-•1h ago•0 comments

This Website Is Now Made in Swift

https://sindresorhus.com/blog/swift-website
2•ingve•1h ago•0 comments

Eye Cells May Have Been Rejuvenated for the First Time in People

https://time.com/article/2026/10/08/eye-cells-rejuvenated-for-the-first-time-in-people/
3•davidrjones1977•1h ago•1 comments

Show HN: Aporium – A UMAP galaxy of 5800 philosophy excerpts in conversation

https://www.aporium.app/explore
2•kevinjacobh•1h ago•0 comments

Silicon Valley's Dream City Has Crashed into Small-Town Politics

https://www.wsj.com/us-news/silicon-valleys-dream-city-has-crashed-into-small-town-politics-4521d1bd
3•Anon84•1h ago•0 comments