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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!

Ntfy – open-source Push to Mobile

https://ntfy.sh/
1•Fake4d•2m ago•0 comments

Messy

https://www.observed.life/messy
1•brslv•2m ago•0 comments

You can now book two humanoids for our cleaning service in SF

https://twitter.com/alexkoch_ai/status/2087947168799977731
1•doener•4m ago•0 comments

Tinysub: Simple web player for subsonic compatible music servers

https://tangled.org/devins.page/tinysub
1•nerdypepper•5m ago•0 comments

Show HN: DialectGuessr ─ GeoGuessr, but for Accents

https://www.dialectguessr.com
1•lforster•8m ago•0 comments

Paste any recipe link and get just the recipe – no story

https://cutrecipe.com
1•susanvilleula1•8m ago•0 comments

Agent-kit – a size-based mandatory review chain for Claude Code

https://github.com/horilla98/agent-kit
1•danielhorilla•9m ago•0 comments

Not-a-Linux distro review: SerenityOS is a Unix-y love letter to the '90s (2021)

https://arstechnica.com/gadgets/2021/08/not-a-linux-distro-review-serenityos-is-a-unix-y-love-let...
1•doener•10m ago•0 comments

NATO Scrambles Eurofighters, F-16s After Drone Enters Latvian Airspace

https://www.newsweek.com/nato-scrambles-eurofighters-f-16s-after-drone-enters-latvian-airspace-12...
3•Bluestein•11m ago•0 comments

Quantum Annealing, Or, Do Weird Stuff (2013)

https://robertheaton.com/2013/02/11/quantum-annealing/
1•tosh•14m ago•0 comments

The New Berlin Wall

https://planetocracy.org/p/the-new-berlin-wall
1•pr337h4m•14m ago•1 comments

StoryScope: Investigating Idiosyncrasies in AI Fiction

https://arxiv.org/abs/2604.03136
1•dgellow•16m ago•0 comments

Quantum Annealing

https://en.wikipedia.org/wiki/Quantum_annealing
1•tosh•16m ago•0 comments

Evaluating Your Agentic Harnesses

https://data4sci.substack.com/p/evaluating-your-agentic-harnesses
2•Anon84•16m ago•0 comments

Show HN: Rank and Run – No free version of this card game existed, so I made one

https://www.rankandrun.app/
1•xthreadmaker•16m ago•0 comments

StarCraft: Brood War now runs natively on a 68k Amiga – first alpha release

https://www.reddit.com/r/amiga/comments/1vnr1vv/starcraft_brood_war_now_runs_natively_on_a_68k/
1•doener•17m ago•0 comments

Beyond the Userspace Call Stack: Subsystem Context for Detection Engineering

https://fibratus.io/blog/kernel-call-stack-subsystem-context-detection-engineering
1•archrabbit•20m ago•0 comments

Unfit to Boot: Breaking U-Boot's Fit Signature Verification

https://www.binarly.io/blog/unfit-to-boot-breaking-u-boots-fit-signature-verification
1•ankitg12•23m ago•0 comments

Fish are facing a summer of death in UK's poisoned rivers

https://inews.co.uk/news/feargal-sharkey-fish-facing-summer-death-uks-rivers-4700217
1•robtherobber•24m ago•0 comments

Show HN: Take a break, play some puzzles

https://gridmino.com/
1•marko-projects•24m ago•0 comments

Why does Opus 5 feel worse to work with?

https://mun-logadan.github.io/why-does-opus-5-feel-worse/
36•numeri•24m ago•24 comments

Firetiger Joins Cursor

https://cursor.com/blog/firetiger
1•ms7892•26m ago•0 comments

Major oil slick washes up on Iran coast after Hormuz ship strike

https://www.bbc.com/news/articles/cr7kpdkg13zo
6•binyu•27m ago•1 comments

Source download: Browse, inspect and download every asset as a ZIP

https://github.com/turanburakyesilyurt/source-download
1•2rundev•29m ago•0 comments

Ask HN: Why was my Show HN flagged?

2•gits997•30m ago•0 comments

A Probe Direction Is a Property of Its Prompt

https://arxiv.org/abs/2608.13329
1•sbulaev•30m ago•0 comments

I want extern "fil-C"

https://www.domenkozar.com/2026/08/13/i-want-extern-fil-c/
5•ingve•30m ago•0 comments

WordPress Plugin Generator with AI

https://steem.dev
1•startuphubai•34m ago•1 comments

BuyMeACoffee dropped support for many countries, and nobody cares (2024)

https://zverok.space/blog/2024-08-08-bmac-snafu.html
1•downbad_•34m ago•0 comments

Deep-Imager|One-Stop AI Image Generation Platform

1•chgxue•35m ago•0 comments