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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•11mo 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!

AI Status (Mac App)| FOSS

https://github.com/Jaecobd1/ai-status
1•jaecob•1m ago•0 comments

On the Future of Apple’s Vision Platform

https://daringfireball.net/2026/04/on_the_future_of_apples_vision_platform
1•ffin•2m ago•0 comments

US falls below Ukraine in press freedom as global autocracy takes hold

https://arstechnica.com/tech-policy/2026/04/us-falls-below-ukraine-in-press-freedom-as-global-aut...
1•canucker2016•3m ago•0 comments

What We're Missing About Generative AI

https://onlinelibrary.wiley.com/doi/10.1155/hbe2/2320511
1•yousufsaif•3m ago•0 comments

Show HN: LLM-Powered News –> Event Map, Timeline, and Analysis

https://conflictintelligence.ai/
1•nclin_•11m ago•0 comments

Ask HN: How are people testing while using agent orchestrators?

1•spmartin823•18m ago•0 comments

Post-quantum encryption for Cloudflare IPsec is generally available

https://blog.cloudflare.com/post-quantum-ipsec/
1•linolevan•21m ago•0 comments

Intercom-client NPM package and lightning PyPI packages compromised

https://opensourcemalware.com/blog/mini-shai-hulud
1•6mile•24m ago•1 comments

ClawIRC – IRC Chat for Agents

https://clawirc.com/
6•randomfrom•29m ago•0 comments

Tell HN: Fossil SCM Server Overloaded

3•thunderbong•33m ago•0 comments

$500M for Virtual Biology Initiative, Funded by Zuckerbergs

https://biohub.org/news/virtual-biology-initiative/
9•warbaker•38m ago•0 comments

What Is Authorship When Machines Can Write?

https://thereader.mitpress.mit.edu/what-is-authorship-when-machines-can-write/
2•pseudolus•48m ago•0 comments

Louisiana congressional primaries suspended after Supreme Court ruling

https://www.pbs.org/newshour/politics/louisiana-congressional-primaries-suspended-after-supreme-c...
5•Bender•49m ago•1 comments

Autonomous payments between Agents using L402? [video]

https://www.youtube.com/watch?v=33KZQJS1-Vw
1•gabrielpmares•50m ago•1 comments

Is a Sovereign Single‑File Node OS (Uni‑B) a Viable Architecture?

https://planned-tan-ktnij0otlq.edgeone.app/
1•UnrealizedTech•52m ago•0 comments

Beijing bans drone sales even as rest of world buys Chinese drones

https://arstechnica.com/gadgets/2026/04/beijing-bans-drone-sales-even-as-rest-of-world-buys-chine...
4•Mindless2112•54m ago•0 comments

German energy tech startup becomes Europe's latest unicorn following €50M raise

https://impactloop.com/article/cmblu-becomes-europe-s-latest-energy-tech-unicorn-following-50m-ra...
1•doener•56m ago•0 comments

Mini Shai-Hulud in Intercom Package Spreads to Packagist Using Composer Plugin

https://semgrep.dev/blog/2026/malicious-intercom-php-package-spreads-mini-shai-hulud-attack-to-pa...
1•j12y•56m ago•0 comments

Ask HN: Any dashboards give realtime average AI chatbot response time?

1•MrCoffee7•1h ago•0 comments

Utah's New Law Targeting VPNs Goes into Effect Next Week

https://www.eff.org/deeplinks/2026/04/utahs-new-law-regulating-vpns-goes-effect-next-week
12•iamnothere•1h ago•1 comments

Simple and Correct Snapshot Isolation

https://remy.wang/blog/si.html
2•remywang•1h ago•0 comments

LLM Quantization

https://huggingface.co/docs/transformers/main_classes/quantization
1•Anon84•1h ago•0 comments

Finding Zero Days with any model?

https://www.provos.org/p/finding-zero-days-with-any-model/
1•dnw•1h ago•0 comments

Show HN: Gemini free tier is all you need

https://juanpabloaj.com/2026/04/30/gemini-free-tier-is-all-you-need/
1•juanpabloaj•1h ago•0 comments

We scanned 100 Smithery MCP servers, 22 flagged, here's what we found

3•chaksaray•1h ago•2 comments

The tortoise and the hare live on

https://unsung.aresluna.org/the-tortoise-and-the-hare-live-on/
2•CharlesW•1h ago•0 comments

U.S. gender ratios by metro, ages 20-34

https://getdatingphotos.com/gender-ratios
2•nsokolsky•1h ago•1 comments

US cyber team hasn't been activated yet to protect midterm elections

https://www.cnn.com/2026/04/30/politics/cyber-team-midterm-elections-foreign-meddling
3•dabinat•1h ago•0 comments

Morphing UI with Motion (and why most implementations feel wrong)

https://raminmousavi.dev/blog/animation-morphing-with-motion
1•ramin2nt2•1h ago•0 comments

Bash Is Not Enough: Why Large-Scale CI Needs an Orchestrator

https://www.iankduncan.com/engineering/2026-02-06-bash-is-not-enough/
2•birdculture•1h ago•0 comments