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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•6mo 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!

Using Petri nets as a formal language for LLM-assisted development

https://github.com/pflow-xyz/go-pflow
1•orksliver•2m ago•1 comments

GitHub to Codeberg: My Experience

https://eldred.fr/blog/forge-migration/
1•todsacerdoti•5m ago•0 comments

HashJack Indirect Prompt Injection Weaponizes Websites

https://www.infosecurity-magazine.com/news/hashjack-indirect-prompt-injection/
2•nobody9999•7m ago•1 comments

How do we keep apps maintained on Flathub?

https://tim.siosm.fr/blog/2025/11/24/building-better-app-store-flathub/
2•coffeeaddict1•8m ago•0 comments

Interslavic

https://en.wikipedia.org/wiki/Interslavic
1•ingve•9m ago•0 comments

Surface Tension

https://iamstelios.com/blog/surface-tension/
1•i8s•10m ago•0 comments

The Thinking Game Film – Google DeepMind Documentary

https://thinkinggamefilm.com
6•ChrisArchitect•10m ago•0 comments

A three-layer memory architecture for long-running agents

1•mvyshnyvetska•11m ago•0 comments

Audinspect – An audio file inspector for A&R teams and producers

https://github.com/404oops/Audinspect
1•404oops•11m ago•0 comments

Coding is the purest form of art

1•learningstud•16m ago•1 comments

Show HN: Cognitive architecture prototype with identity, memory, initiative

https://ivanhonis.github.io/ai_home/
1•nDot_io•17m ago•0 comments

Aissist – my personal AI assistant CLI that remembers

https://github.com/albertnahas/aissist
1•albertnahas•18m ago•1 comments

Langjam Gamejam: Build a programming language then make a game with it

https://langjamgamejam.com/
1•birdculture•19m ago•0 comments

Why India struggles to clear its air

https://www.thehindu.com/sci-tech/energy-and-environment/why-india-struggles-to-clear-its-air/art...
1•saikatsg•21m ago•0 comments

Free Database with 4B+ reverse DNS records

https://ip.thc.org/docs/bulk-data-access
1•lakti_mosfit•22m ago•0 comments

Why I Built My Own Kubernetes Cluster on Hetzner Cloud

https://onatm.dev/2025/11/30/why-i-built-my-own-kubernetes-cluster/
2•onatm•23m ago•3 comments

Modern cars are spying on you. Here's what you can do about it

https://apnews.com/article/auto-car-privacy-3674ce59c9b30f2861d29178a31e6ab7
18•MilnerRoute•24m ago•2 comments

How I unlocked the Kimi K2 $0.99 offer?

https://www.kimi.com/share/19ad56ec-77b2-8e5e-8000-0000e19451c6
1•raghavankl•26m ago•0 comments

Atlas Shrugged

https://david-jasso.com/2024/04/11/atlas-shrugged/
7•mnky9800n•26m ago•1 comments

6174

https://en.wikipedia.org/wiki/6174
2•thunderbong•27m ago•0 comments

Pathology in the Hundred Acre Wood: a neurodevelopmental perspective

https://pmc.ncbi.nlm.nih.gov/articles/PMC80580/
3•andrewstetsenko•28m ago•2 comments

Common snack enhanced memory and brain vascular function in a 16-week trial

https://www.psypost.org/this-common-snack-enhanced-memory-and-brain-vascular-function-in-a-16-wee...
1•DrierCycle•28m ago•0 comments

The Atom of Intelligence (2023)

https://blog.piekniewski.info/2023/04/16/the-atom-of-intelligence/
1•DevilMadeMeDoIT•29m ago•0 comments

Cyber Monday Deals 2025

https://github.com/punkpeye/awesome-cyber-monday-2025
3•smokybay•30m ago•0 comments

Ethiopian Volcano Erupts for First Time in Nearly 12K Years of Records

https://www.smithsonianmag.com/smart-news/ethiopian-volcano-erupts-for-the-first-time-in-nearly-1...
1•pseudolus•30m ago•0 comments

40 Questions to ask yourself every year (2022)

https://twitter.com/kepano/status/1602773345627348993
1•jger15•33m ago•0 comments

Operation Northwoods

https://en.wikipedia.org/wiki/Operation_Northwoods
1•TomWhitwell•34m ago•0 comments

Show HN: I've created BlogLab to help grow my SaaS automatically

https://bloglab.app
1•robby1110•37m ago•0 comments

Ask HN: What language are you using to do AOC in?

3•sonderotis•43m ago•2 comments

Show HN: Demo Scope – Record/Stream iOS Web Demos with Face Cam and Touches

https://apps.apple.com/us/app/demo-scope/id6755395174
1•admtal•46m ago•0 comments