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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!

YouTube's dominance has Hollywood running scared

https://www.economist.com/business/2026/11/08/youtubes-dominance-has-hollywood-running-scared
1•andsoitis•1m ago•0 comments

The Overton Window: How Unthinkable Ideas Become the Norm

https://paulitaylor.com/2026/03/27/the-overton-window-how-unthinkable-ideas-become-the-norm/
1•andsoitis•2m ago•0 comments

Super Fast Linux Photo Viewer

https://licasa.pics/
2•UncleJo7•5m ago•0 comments

Compend, Everything Is Up for Review

https://gurlworld.com/on-compend-everything-is-up-for-review/
2•rdmuser•5m ago•0 comments

Show HN: Fireside Folio – free books, comics and news editions for reMarkable

https://firesidefolio.com/
1•hashfunction•9m ago•0 comments

The 'Silver Label' Commodore 64: The Beginning of a Legend

https://www.amigalove.com/viewtopic.php?t=3079
1•erickhill•10m ago•0 comments

'Starlog' Magazine Returns with First Cover in 17 Years

https://www.hollywoodreporter.com/business/business-news/starlog-magazine-returns-with-first-cove...
1•rdmuser•12m ago•0 comments

U.S. Cleared Nvidia Chips to Chinese Firms with Empty Offices and Troubling Ties

https://www.nytimes.com/2026/11/07/business/economy/nvidia-chips-chinese-firms.html
3•porridgeraisin•20m ago•0 comments

Show HN: SafeScript, a safe version of JavaScript for executing untrusted code

https://github.com/SafeScript/safescript
1•EGreg•21m ago•0 comments

Show HN: A kernel written in Rust that can boot Ubuntu with Plasma desktop

https://github.com/ozkl/ruxis
1•ozkl•22m ago•0 comments

Piezoelectric toothbrush reduces plaque

https://www.science.org/doi/10.1126/sciadv.aeg5744
1•Gaishan•23m ago•0 comments

Ask HN: What are you working on? (November 2026)

5•david927•28m ago•3 comments

Surnames

https://dogdogfish.com/blog/2026/11/08/surnames/
2•matthewsharpe3•30m ago•0 comments

Microseason.app

https://www.microseason.app
2•mfix22•32m ago•1 comments

Future startup ideas, excavated from science fiction

https://absurd.website/startup-archaeology/
2•thunderbong•33m ago•0 comments

Welcome to Boulder Ruby

https://boulder-ruby.org/
1•mooreds•34m ago•0 comments

Nvidia launches investigation into CEO's affair with suspected Chinese spy

https://www.bbc.co.uk/news/articles/c3dxw10rjn9no
8•haritha-j•38m ago•1 comments

There Is No Place in a Functional Society for Elon Musk

https://defector.com/there-is-no-place-in-a-functional-society-for-elon-musk
6•HotGarbage•42m ago•0 comments

UK Government 'looking seriously' at banning under-16s from Vinted and eBay

https://www.bbc.co.uk/news/articles/cmzxjvpqrjxro
4•Lio•42m ago•3 comments

Making profile-guided optimization reproducible

https://fzakaria.com/2026/11/07/making-profile-guided-optimization-reproducible
1•ingve•43m ago•0 comments

Mstein – Ich klau den RAM

https://www.youtube.com/watch?v=8kd67EQaieU
1•amai•45m ago•0 comments

Nvidia's Jensen Huang admits to affair with Chinese spy

https://www.ft.com/content/1397e2f4-d7f5-4cbb-a4d9-04ecf661d1aa
9•zaki_01•45m ago•1 comments

You can no longer (un-)star archived GitHub repositories

https://joshua.hu/github-cannot-star-archived-repository
2•mmsc•47m ago•0 comments

Map of Science

https://sciencemap.eto.tech/
1•hexhu•49m ago•0 comments

Save Our Screen: Generated Art for Samsung Frame TVs

https://screensaver.specr.net/
1•memalign•49m ago•0 comments

Ask HN: Anyone here does cold email?

1•dontoni•49m ago•0 comments

Meta's Charm gadget carries CEO Zuckerberg's big AI ambitions

https://tech.yahoo.com/ai/meta-ai/articles/metas-charm-gadget-carries-ceo-043955979.html
1•gmays•50m ago•0 comments

What Anthropic's IPO Filing Says About the Future of A.I

https://www.nytimes.com/2026/10/30/opinion/anthropic-ipo-ai.html
3•edward•51m ago•0 comments

Crows Make Decisions Twice as Fast as Humans

https://scitechdaily.com/scientists-discover-crows-make-decisions-twice-as-fast-as-humans/
1•Gaishan•53m ago•0 comments

The problem with Micron MT 4264 RAM

https://dfarq.homeip.net/the-problem-with-micron-mt-4264-ram/
1•nsoam•53m ago•0 comments