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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•10mo 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!

Securing AI Agents

https://fusionauth.io/articles/ai/securing-ai-agents
1•mooreds•41s ago•0 comments

Show HN: Quell, a local security layer to stop AI IDEs leaking your secrets

https://github.com/Sonofg0tham/Quell
1•Sonofg0tham•2m ago•0 comments

Single message billboard. outbid to takeover

https://billboard.today
1•bekdavid893•5m ago•0 comments

Paul R. Ehrlich, Who Alarmed the World with 'The Population Bomb,' Dies at 93

https://www.nytimes.com/2026/03/15/books/paul-r-ehrlich-dead.html
1•igonvalue•7m ago•0 comments

Are we getting NSFW ChatGPT?

https://community.openai.com/t/are-we-getting-nsfw-chatgpt/1376809
3•puildupO•7m ago•1 comments

Thoughts on Generative A.I

https://kghose.github.io/generative-ai/
1•birdculture•9m ago•0 comments

DNS-over-QUIC in Unbound

https://blog.nlnetlabs.nl/dns-over-quic-in-unbound/
1•jruohonen•11m ago•0 comments

See what attackers can discover about your company's domain

https://surfacesentinel.arcforgelabs.com/
1•paddysec•11m ago•1 comments

Scientists harness light to program how particles interact and assemble

https://phys.org/news/2026-02-flip-scientists-harness-particles-interact.html
1•PaulHoule•12m ago•0 comments

Britain's Populist Right Has Surrendered Its Mind to America

https://liambyrne.substack.com/p/take-back-control
3•tastyface•14m ago•1 comments

Show HN: DemoSlice – Turn screenshots into interactive product tours (free)

https://demoslice.io/
1•eyane•15m ago•1 comments

Throwback: Coffeescript.org

https://coffeescript.org
1•BafS•17m ago•0 comments

Show HN: ARISE – Agents that create their own tools at runtime when they fail

https://github.com/abekek/arise
1•abekek•17m ago•0 comments

Show HN: HN Skins – Available Skins: Cafe, Courier, London, Midnight, Terminal

https://github.com/susam/hnskins
1•susam•18m ago•0 comments

Claude, you are a cutie-pie

https://margaretatwood.substack.com/p/claude-you-are-a-cutie-pie
2•theblazehen•20m ago•0 comments

Stolen Works of Art Database

https://www.interpol.int/Crimes/Cultural-heritage-crime/Stolen-Works-of-Art-Database
1•jruohonen•23m ago•0 comments

Show HN: Turn any file into a CLI (reduce tokens vs. MCP)

1•gounisalex•23m ago•0 comments

Show HN: Agreezy: Create and e-sign agreements in minutes, no account needed

https://agreezy.app
2•agreezy•24m ago•1 comments

Show HN: LearnFork – Branching AI chat for learning and researching

https://learnfork.com/home
1•ninjaplavi•24m ago•1 comments

Iceland's Chief 'Lava Cooler' Is Bracing for the Next Eruption

https://www.nytimes.com/2026/03/15/world/europe/iceland-lava-volcano-eruption-grindavik.html
1•mitchbob•25m ago•1 comments

Your Company Is a Harness

https://twitter.com/seandoher1y/status/2033260806318797232
1•seandoh•26m ago•1 comments

The 49MB Web Page

https://thatshubham.com/blog/news-audit
6•kermatt•27m ago•0 comments

I Built LiveAuth: POW and Lightning Network Authentication for AI Agents

1•sydney-liveauth•27m ago•0 comments

Do you really need an agent?

2•g_br_l•27m ago•2 comments

Show HN: Opsmeter.io – AI cost attribution and budget control for LLM apps

1•opsmeter•28m ago•0 comments

Show HN: LLVM-Z80 - I wrote a complete LLVM backend with AI

https://github.com/llvm-z80/llvm-z80
1•zlfn•30m ago•0 comments

Imglink.cc – simple image hosting with folders and password-locked sharing

https://imglink.cc
1•happyghast•30m ago•0 comments

Franklin Awards Global Membership

https://franklinawards.substack.com/p/franklin-awards-global-membership
1•congruency•33m ago•0 comments

GLM-5-Turbo

https://docs.z.ai/guides/llm/glm-5-turbo
4•Topfi•35m ago•2 comments

Ukraine strike on Russian chip plant sparks revolt among pro-war bloggers

https://english.nv.ua/nation/ukraine-strike-on-kremniy-el-plant-sparks-rift-between-russian-propa...
4•gnabgib•35m ago•0 comments