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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•9mo 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!

T3 Code is the best way to code with AI

https://t3.codes/
2•fdb•36s ago•0 comments

Show HN: Python script that alerts when your CLI AI agent goes idle

https://github.com/davecandi/vibechime
1•davecandi•1m ago•0 comments

Show HN: TeamShotsPro – AI team headshots from a selfie in 60 seconds

https://www.teamshotspro.com
1•Mvhaperen•2m ago•0 comments

The Underwriter as Creative Director

https://medium.com/@benedictaltier/the-underwriter-as-creative-director-bf97bf161009
1•benedictallen•6m ago•1 comments

Traditional tales from Cornwall, with maps for stories' locations

https://www.mazedtales.org/
1•ohjeez•7m ago•0 comments

Show HN: ContentForge – Repurpose any text into posts for 8 platforms

https://www.contentforgehq.com/
1•chadtd1•8m ago•0 comments

Game Theory Expert: America Will Lose Iran War – Professor Jiang

https://www.youtube.com/watch?v=YJJRjK2fWnA
1•n1b0m•8m ago•0 comments

Show HN: Excalidraw Architect MCP for AI Based IDEs

https://github.com/BV-Venky/excalidraw-architect-mcp
2•Venky1729•9m ago•0 comments

Show HN: Share files and folders on your own domain or subdomain

https://www.bulkshare.cloud
1•api008•11m ago•0 comments

Show HN: I built a daily game that tests if you can tell 1999 apart from 2005

https://yeartobeat.com/
1•FKJ•13m ago•1 comments

Show HN: Paster – A keyboard-first clipboard manager for Vim users

https://pasterapp.com
1•luanderock•13m ago•0 comments

Everybody Loves to Hate Dubai. Here's Why They're Wrong

https://www.wsj.com/world/middle-east/dubai-iran-a2582863
2•pr337h4m•13m ago•0 comments

CIS352: Principles of Programing Languages

https://kmicinski.com/cis352-s26/
1•linhns•14m ago•0 comments

Ensu – Ente's Local LLM App

https://ente.io/ensu/
3•Riyadh_Hossen•14m ago•1 comments

Tessera – MCP server that gives Claude persistent memory and local RAG search

https://github.com/besslframework-stack/project-tessera
2•jasonjeong•15m ago•0 comments

Best AI Prompt Systems of 2026: 9 Tools with 270 Built-In Modules

https://medium.com/@robert.shane.kirkpatrick/best-ai-prompt-systems-of-2026-9-engineered-tools-wi...
2•totalvaluegroup•16m ago•0 comments

Motif Mindset Design

https://motifmindsetdesign.etsy.com
2•robertsshaun•16m ago•0 comments

Start Here Studio

https://startherestudio.gumroad.com/
3•robertsshaun•18m ago•0 comments

Imagination vs. Creativity (2024)

https://www.ribbonfarm.com/2024/07/14/imagination-vs-creativity/
1•nomagicbullet•19m ago•0 comments

NNsight v0.6: Open-source Interpretability for LLMs

https://nnsight.net/blog/2026/02/26/introducing-nnsight-06/
3•gabrielesarti•19m ago•0 comments

A Farewell to Code Reviews

https://distantprovince.by/posts/a-farewell-to-code-reviews/
2•distantprovince•20m ago•0 comments

Show HN: Prompt Armour – Real-time PII detection for AI chatbots, 100% local

https://prompt-armour.vercel.app/
3•TheAlexRider•23m ago•1 comments

Rethinking the Stack: AI-Native Operating Systems and Tools

https://cacm.acm.org/news/rethinking-the-stack-ai-native-operating-systems-and-tools/
3•bikenaga•24m ago•0 comments

Mdspec.dev – let us heavylift your cluttering md files

https://mdspec.dev
1•zameermfm•25m ago•1 comments

Ask HN: Use-Cases for an Operating System with a Custom Kernel

1•ayush_xeneva•26m ago•1 comments

Exploring the ocean with Raspberry Pi–powered marine robots

https://www.raspberrypi.com/news/exploring-the-ocean-with-raspberry-pi-powered-marine-robots/
1•Brajeshwar•27m ago•0 comments

It Depends

https://idiallo.com/blog/it-depends-experts-never-give-straight-answers
1•Brajeshwar•27m ago•0 comments

AI Engineer will be the LAST job

https://www.latent.space/p/ainews-ai-engineer-will-be-the-last
1•Brajeshwar•28m ago•0 comments

5 Years of Founder's Grind

https://twitter.com/byanhtho/status/2024863500468629584
1•jdenquin•28m ago•0 comments

I Built: Visualize Your AI Chat Context

https://99helpers.com/tools/visual-contextual-chat
1•nickk81•29m ago•0 comments