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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!

What 1.5T tokens cost per month

https://www.peterp.me/articles/what-1-5-trillion-tokens-a-month-actually-costs/
1•thegreatpeter•1m ago•0 comments

Twelve years of building a game engine, and what it means to finish one

https://panoskarabelas.com/blog/posts/finishing_a_game_engine/
1•vinyl7•1m ago•0 comments

SpiderFarmer GGS Controler – New ESP32 Controller Bridge

https://github.com/matthias1232/spider-farmer-homeassistant
1•matthias1232•2m ago•0 comments

What have you learned that's now outdated?

https://theretrocodex.com/
1•momentmaker•2m ago•0 comments

How the Internet ruined San Francisco (1999)

https://www.salon.com/1999/10/28/internet_2/
1•zachwdc•3m ago•0 comments

We review 4x more AI code without reading every line

https://thenewstack.io/scale-ai-code-reviews/
2•Brajeshwar•10m ago•0 comments

Climate change transforms the colors of our world

https://apps.npr.org/color-climate-change-coral-lakes/
1•geox•10m ago•0 comments

RedisME: Redis GUI in the World

https://www.hepengju.com/
1•hepengju•11m ago•0 comments

Meridian – an experimental web browser built on Servo and GPUI

https://op.tngl.io/meridian/
1•birdculture•11m ago•1 comments

Controversy Surrounding Anduril Industries

https://discourse.haskell.org/t/controversy-surrounding-anduril-industries/10253?page=4
1•n_plus_1_acc•12m ago•1 comments

AI stance is not binary

https://carette.xyz/posts/ai-stance-is-not-binary/
1•LucidLynx•12m ago•0 comments

Mercedes Gives Its Cars an AI Upgrade

https://www.wsj.com/cio-journal/mercedes-gives-its-cars-an-ai-upgrade-607daae2
1•bookofjoe•14m ago•1 comments

Musk documentary from Alex Gibney (2026)

https://en.wikipedia.org/wiki/Musk_(film)
1•1vuio0pswjnm7•15m ago•0 comments

Show HN: Nino – Fastest C# serializer, safe on untrusted input, also TS/Go/Rust

https://github.com/JasonXuDeveloper/Nino
1•jnx11•16m ago•0 comments

Show HN: Lipwise

https://getlipwise.com/
1•lnenad•18m ago•0 comments

The worl went video, professional ecosystem didn't

https://apps.apple.com/gb/app/zeedeo/id6450534767
1•Zeedeo_•18m ago•0 comments

Git Good User Guide

https://100allora.it/gg/
2•baol•20m ago•0 comments

Show HN: Cross-device passkey auth on Android 9, synced with Bitwarden

https://rsnel.github.io/passkeychain/
1•riksnel•20m ago•0 comments

Gg is Git good. An UI to inspect and update Git repos

https://github.com/baol/gg
2•baol•20m ago•0 comments

My secret life as a relapsed alcoholic

https://www.theguardian.com/news/ng-interactive/2026/nov/03/my-secret-life-as-a-relapsed-alcoholi...
1•tosh•23m ago•0 comments

Show HN: Study Scout, a novelty search with no NOVEL verdict

https://github.com/inspectorSlap/Study-Scout
1•inspectorSlap•23m ago•0 comments

DoorDash Shareholders Aren't Convinced the Company Can Take on Amazon

https://www.wsj.com/business/retail/doordash-shareholders-arent-convinced-the-company-can-take-on...
1•ryan_j_naughton•30m ago•1 comments

Agentic Software Engineering (ASE) 2.0: Grilling, Task Boards, Agents, and More

https://ase.tools/news/
3•rse•30m ago•0 comments

The Learjet Repo Man

https://www.salon.com/2009/06/06/lear_jet_repo_man/
2•HR01•31m ago•2 comments

Amp Code Launches Spaces

https://ampcode.com/news/spaces
1•chaosprint•31m ago•0 comments

Rosstat Leaks: combat deaths and mortality

https://rosstat-leaks.com/?lang=en#forecast
2•Tomte•31m ago•0 comments

Show HN: Fuel prices in 11 European countries, with maps and border comparisons

https://fuelpriceatlas.com/
1•smirnofftom•36m ago•0 comments

Show HN: After decades, I have my almost perfect music player

https://github.com/skhaz/overdrive
2•mococa•36m ago•0 comments

The GPT Architecture, on a Napkin (2022)

https://dugas.ch/artificial_curiosity/GPT_architecture.html
1•zenincognito•37m ago•0 comments

My browser OCR couldn't read a sunscreen bottle. Here's what fixed it

https://devpack.app/blog/making-browser-ocr-read-phone-photos
2•thunderbong•37m ago•1 comments