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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!

National College Entrance Examination Collection - Math – China

https://github.com/deekur/gaokaomath
1•pm2222•6m ago•0 comments

Daytona is going closed source. Here's why

https://www.daytona.io/dotfiles/updates/daytona-is-going-closed-source
3•david_shi•14m ago•0 comments

Thermodynamic gravity explains cosmic acceleration without dark energy

https://phys.org/news/2026-06-thermodynamic-approach-gravity-cosmic-dark.html
1•stevenjgarner•23m ago•1 comments

Study on the effects of listening to podcasts on headphones vs. speakers

https://www.sciencedirect.com/science/article/abs/pii/S0749597822000176
1•Curiositry•26m ago•0 comments

Being a Dad

https://www.derekthompson.org/p/three-reasons-to-be-a-parent
1•Curiositry•31m ago•1 comments

AI Erodes a Legacy of Reading

https://molochinations.substack.com/p/ai-erodes-a-legacy-of-reading
5•domhudson•31m ago•1 comments

The Permission Slip

https://www.cringely.com/2026/05/28/the-permission-slip/
1•B1FF_PSUVM•41m ago•0 comments

Iterating Faster with TypeScript 7

https://code.visualstudio.com/blogs/2026/06/26/iterating-faster-with-ts-7
3•soheilpro•42m ago•0 comments

Show HN: Boot a tiny app-making OS inside an AI chat

https://hollingsworthd.github.io/RAu/
1•logn•42m ago•0 comments

The Impacts of Unauthorized Immigration on U.S. Labor and Housing Markets

https://www.dallasfed.org/research/papers/2026/wp2607
1•nradov•58m ago•1 comments

Enterprise AI customers pulling back from OpenAI and Anthropic as costs mount

https://qz.com/enterprise-ai-spending-openai-anthropic-roi-pullback-062626
3•toomuchtodo•1h ago•4 comments

Compiler Education Deserves a Revolution

https://thunderseethe.dev/posts/compiler-education-deserves-a-revoluation/
3•azhenley•1h ago•0 comments

I Co-Founded Wikipedia. Now I'm Banned for Life

https://www.thefp.com/p/larry-sanger-wikipedia-co-founder-banned
10•bko•1h ago•4 comments

Show HN: Tested – AI Tools Scored by a Panel of LLMs (Claude, GPT, Gemini, Grok)

https://trytested.com
1•pro_methe5•1h ago•0 comments

What's the value of the Biblical half shekel?

https://www.chabad.org/library/article_cdo/aid/673063/jewish/Whats-the-value-of-the-biblical-half...
2•teleforce•1h ago•1 comments

Show HN: GetBlocked – a local-only Chrome extension for blocking web trackers

https://github.com/alex-w-developer/GetBlocked/
7•sudo_cowsay•1h ago•3 comments

Indus civilisation reveals its volumetric system

https://www.thehindu.com/news/national/Indus-civilisation-reveals-its-volumetric-system/article16...
1•teleforce•1h ago•0 comments

Evolving the Node.js Release Schedule

https://nodejs.org/en/blog/announcements/evolving-the-nodejs-release-schedule
1•thunderbong•1h ago•0 comments

Greatgramps: A static site generator for GRAMPS family trees

https://bennuttall.com/blog/2026/06/greatgramps/
1•benn_88•1h ago•0 comments

Join .agent – Pre-Register Your Domain Free

https://agentcommunity.org/join
3•Anon84•1h ago•2 comments

The State of the AI Economy

https://intelligence.exponentialview.co/
2•marc__1•1h ago•0 comments

How a Star Wars Lego Dispute Triggered an Armed Police Raid in Utah

https://www.wsj.com/us-news/how-a-star-wars-lego-dispute-triggered-an-armed-police-raid-in-utah-c...
1•fortran77•1h ago•1 comments

Building While Becoming

https://pushapaula.substack.com/
2•paulawp•1h ago•0 comments

The Supreme Court's Era of Meaningless Rights

https://www.theatlantic.com/ideas/2026/06/supreme-court-decisions-unenforceable-rights/687713/
2•paulpauper•1h ago•0 comments

Show HN: I scanned 87 MCP servers for agent-authority hygiene – leaderboard

https://capframe.ai/leaderboard
1•euan21•1h ago•2 comments

Show HN: Hacker News on a Train Station Style Flip Board

https://popflame.quickish.space/hn-flipboard/
6•PaybackTony•1h ago•0 comments

The Duck Is Growing

https://gemenergyanalytics.substack.com/p/the-duck-is-growing
1•paulpauper•1h ago•1 comments

The State of the AI Economy

https://www.exponentialview.co/p/the-state-of-the-ai-economy
1•paulpauper•1h ago•0 comments

The formation of human populations in South and Central Asia

https://www.science.org/doi/10.1126/science.aat7487
1•teleforce•1h ago•0 comments

Show HN: Hatchr – Share Claude Designs with a public link

https://www.hatchr.link/
1•othmanosx•1h ago•0 comments