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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!

ICE plans to equip agents with gloves that can deliver electric shocks

https://www.bbc.com/news/articles/c20d292gdp4o
1•decimalenough•1m ago•0 comments

A local RAG desktop app: piFlow

https://github.com/ifoxhz/piflow
1•ifoxhz•1m ago•1 comments

NagaAI – Cheaper AI Aggregator (Like Poe, OpenRouter, etc.)

https://naga.ac
1•peter_d_sherman•2m ago•0 comments

AMD Instinct MI455X Deep Dive: CDNA 5 Marks the Next Era of Instinct

https://www.servethehome.com/amd-instinct-mi455x-deep-dive-cdna-5-marks-the-next-era-of-instinct/
1•pella•6m ago•0 comments

Jarvis – autonomous assistant for real-world tasks

https://jarvis.foundation/
1•modinfo•7m ago•0 comments

Schema. A new open-source library for serialized data in C++/C#/Golang and Rust

https://github.com/mas-bandwidth/schema/blob/main/README.md
1•gafferongames•7m ago•0 comments

Jeff Dean has been in talks for a $10B valuation for his new AI startup

https://www.businessinsider.com/former-google-exec-jeff-dean-valuation-for-new-ai-startup-2026-8
1•nsoonhui•8m ago•0 comments

Vercel Sandbox Now Runs on Vercel Managed Images

https://vercel.com/changelog/vercel-sandbox-managed-images
1•0xedb•12m ago•0 comments

What Is AI Governance and How to Operationalize It?

https://www.etherionconsulting.com/blog/what-is-ai-governance-and-how-to-operationalize-it/
1•koanvai•15m ago•0 comments

Show HN: Daedalus, Artful D2 Diagrams

https://asmat.ca/blog/what-makes-good-diagrams/
1•sotilrac•17m ago•0 comments

Show HN: PhotoBook.studio – Get your photos off the internet into a book

https://photobook.studio/
2•nadermx•17m ago•0 comments

My Homelab Got Hacked – A Postmortem

https://phunky.cafe/my-homelab-got-hacked/
1•birdculture•20m ago•0 comments

Conductor for Windows/Linux

https://maestro-build.com/
1•Entropnt•24m ago•1 comments

Why Disney Plus Failed and Content Monetization Is Art

https://s-1.vercel.app/posts/the-failure-of-disney-monetizing/
1•Taikhoom2010•24m ago•0 comments

Return to the 'Trust Us' Days of Central Banking? No Thanks

https://www.bloomberg.com/opinion/articles/2026-08-12/the-fed-ecb-and-boe-must-communicate-better...
1•petethomas•28m ago•0 comments

Richest to Profit in Trump's Capital Gain Tax Ideas for Midterms

https://www.bloomberg.com/news/articles/2026-08-12/richest-to-gain-with-trump-s-capital-gain-tax-...
1•petethomas•29m ago•0 comments

The ESPHome Starter Kit is here

https://esphome.io/blog/2026/08/12/the-esphome-starter-kit-is-here/
2•balloob•30m ago•0 comments

California Uber, Lyft drivers win union recognition

https://www.cbsnews.com/losangeles/news/california-uber-lyft-drivers-win-union-recognition/
5•lxm•32m ago•0 comments

The Mothra Telescope Captured the Faint Aftermath of a Star's Death

https://www.nytimes.com/2026/08/12/science/mothra-telescope-helix-nebula.html
1•wglb•33m ago•0 comments

Ask HN: What should I do with my W10 laptop?

1•minimal3•35m ago•1 comments

Why Are Scientists So Bad at Naming Things? [video]

https://www.youtube.com/watch?v=luh0NLhcMrI
1•ivanjermakov•36m ago•0 comments

Super Mario 64 – 1996 Developer Interviews

https://shmuplations.com/mario64/
1•us-merul•37m ago•2 comments

Law firm declines offer to represent migrant children

https://apnews.com/article/texas-migrant-children-deport-immigration-d070db48239d70082d22a52197e5...
3•petethomas•43m ago•0 comments

Mux Beacon – macOS menu-bar inbox for Claude Code/Codex agents in tmux

https://github.com/Lukeesec/mux-beacon
1•lmartineng•45m ago•1 comments

Ask HN: How important is document category recognition in data classification?

1•ChrisRun•47m ago•0 comments

Advanced Automation for Space Missions (1982)

https://ntrs.nasa.gov/citations/19830007077
1•zetalyrae•49m ago•0 comments

I reverse engineered Grok Bot and found some hidden features like shared rooms

https://runtimewire.com/article/scoop-grok-bot-ships-dormant-shared-rooms-for-tasking-other-users...
1•ryanmerket•53m ago•0 comments

The Largest Tweetable Number – lectures on infinity (lecture 4)

https://www.youtube.com/watch?v=3n115MgLFz0
1•FillMaths•54m ago•0 comments

Cambra is now open source

https://github.com/cambra-dev/cambra
1•evnc•54m ago•0 comments

They Spoke English, Wore U.S. Flags and Attacked Fishermen. Who Were They?

https://www.nytimes.com/2026/08/12/world/americas/ecuador-fishing-boat-strikes.html
1•ceejayoz•55m ago•0 comments