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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•7mo 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!

Golden Iteration

https://www.johndcook.com/blog/2025/12/12/golden-iteration/
1•vismit2000•4m ago•0 comments

Generate and play music playlists on Apple music

https://github.com/GNtousakis/llm-music
1•todsacerdoti•5m ago•0 comments

People with personality disorders often use language differently

https://theconversation.com/people-with-personality-disorders-often-use-language-differently-our-...
2•zeristor•6m ago•0 comments

Show HN: Xsql – SQL schema conversion via an intermediate representation

1•dawitworku•6m ago•0 comments

Show HN: Xsql – SQL schema conversion via an intermediate representation (Rust)

https://github.com/Dawaman43/xsql
2•dawitworku•7m ago•0 comments

Show HN: Orbit a systems level programming language that compiles .sh to LLVM

https://github.com/SIE-Libraries/orbit
2•TheCodingDecode•8m ago•1 comments

Ask HN: How do you detect compliance risk in Google search results?

1•paolocermelli•12m ago•0 comments

Web Monetiation Wrapped

https://interledger.org/developers/blog/web-monetization-wrapped-2025/
1•ioana_cis•13m ago•0 comments

Questions about Aluminum Alloy

1•Chinalcometal•18m ago•0 comments

Computer Use Models

https://geohot.github.io//blog/jekyll/update/2025/12/18/computer-use-models.html
1•samuel246•18m ago•0 comments

Show HN: Peitho – Automated social media writing for mom-and-pop shops

https://www.peitho.xyz/
1•Nikp263•22m ago•1 comments

Defending Hadrian's Wall took a strong stomach, study finds

https://www.thetimes.com/uk/history/article/defending-hadrians-wall-took-strong-stomach-study-fin...
1•petethomas•23m ago•0 comments

Stately home's £25M restoration derailed by Alberto the albino badger

https://www.thetimes.com/uk/environment/article/parnham-house-albino-badger-wsd72xhmg
1•petethomas•26m ago•0 comments

Why do indie developers always find it so hard to promote their products?

https://amplift.ai/
1•icetearun•27m ago•1 comments

PFAS-contaminated drinking water harms infants

https://www.pnas.org/doi/abs/10.1073/pnas.2509801122
3•methyl•28m ago•0 comments

Top Portuguese fusion physicist shot dead at home in Boston

https://www.portugalresident.com/top-portuguese-fusion-physicist-shot-dead-at-home-in-boston/
4•saubeidl•29m ago•0 comments

The Kremlin's brazen tactics: Russia's shadow fleet is doubling as a spy asset

https://www.cnn.com/2025/12/18/europe/russia-oil-tankers-spying-europe-intelligence-sources-intl-...
3•breve•33m ago•0 comments

Show HN: Helix – AI-powered API mocking with strict schema enforcement

https://github.com/ashfromsky/helix
4•ashfromsky•33m ago•0 comments

The Four Layers of AI-First Transformation

https://www.appunite.com/blog/four-layers-of-ai-first-transformation
1•Przemo_Appunite•42m ago•0 comments

Never Miss a Game Launch

https://www.notifygamer.com/
1•hhdyhaha•43m ago•0 comments

Agnosticism About Artificial Consciousness

https://arxiv.org/abs/2412.13145
2•belter•46m ago•1 comments

Chinese Name Generato

https://chinesenamehub.com/
1•zidana•48m ago•1 comments

A Reddit Post Led to a Breakthrough in the Brown Shooting Investigation

https://www.nytimes.com/2025/12/19/us/brown-mit-shooting-investigation-reddit.html
3•JumpCrisscross•49m ago•0 comments

Gemini 3 Flash now Built-in to AlloyDB

https://medium.com/google-cloud/authors-darshana-sivakumar-pushkar-khadilkar-1a53380fd1bb
2•mariuz•54m ago•0 comments

Show HN: QuantumVICK – 106-agent AI swarm for VSCode (free trial)

https://quantumvick.com
1•epochcore•59m ago•0 comments

Show HN: AI Vocabulary Quiz Maker

https://minform.io/tools/vocabulary-quiz-maker
1•eashish93•1h ago•0 comments

ChatGPT Apps

https://techcrunch.com/2025/12/18/chatgpt-launches-an-app-store-lets-developers-know-its-open-for...
1•grandimam•1h ago•0 comments

The Year in Computer Science – 2025 in review

https://www.quantamagazine.org/the-year-in-computer-science-20251216/
2•vismit2000•1h ago•0 comments

Trump suspends US green card lottery in wake of Brown and MIT shootings

https://www.theguardian.com/us-news/2025/dec/19/trump-suspends-us-green-card-lottery-dv1-visa-pro...
7•Bootvis•1h ago•0 comments

I wanted SSH access to my server from my iPhone, so I built this

https://rootedssh.com/
2•Sayuj01•1h ago•0 comments