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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!

I built a time-tracking app for freelancers and contractors

https://github.com/paracosmos-studio/tallier
1•mufasa159•57s ago•1 comments

Name Available on Request from Companies House

https://find-and-update.company-information.service.gov.uk/company/10542519
1•benbristow•1m ago•1 comments

Seoul to consult US on Swift Gwangju military relocation for chip belt

https://www.koreaherald.com/article/10836538
1•01-_-•2m ago•0 comments

Show HN: In-browser 4x photo upscaling

https://crisp.photos/
1•g58892881•2m ago•0 comments

The bureaucratic AI arms-race is mutually assured destruction

https://pluralistic.net/2026/08/10/deep-state-wopr/
1•hn_acker•2m ago•0 comments

NASA Fires Up Powerful Lithium-Fed Thruster for Trips to Mars

https://www.nasa.gov/missions/tech-demonstration/nasa-fires-up-powerful-lithium-fed-thruster-for-...
1•bilsbie•5m ago•0 comments

I put a local LLM agent inside a menu-bar Mac monitor (and you can leave it off)

https://github.com/raro42/mac-stats
1•raro43•5m ago•0 comments

Russia bars last anti-war party from election, partly over AI image copyright

https://www.scmp.com/news/world/russia-central-asia/article/3363576/russia-bars-anti-war-party-pa...
1•mrdw•6m ago•0 comments

Aptoide becomes the first rival app store to return to Google Play in the US

https://techcrunch.com/2026/08/10/aptoide-becomes-the-first-rival-app-store-to-return-to-google-p...
1•speckx•7m ago•0 comments

Show HN: Lians AI, Token-bounded memory and evidence for AI workflows

https://github.com/Lians-ai/Lians
1•ebeirne•9m ago•0 comments

ChatGPT can now help you find and book a table

https://twitter.com/ChatGPT/status/2086852819215090168
1•saikatsg•9m ago•0 comments

Show HN: PostCards over Postal Network Simulation

https://snapped.pics
1•jeswin•9m ago•0 comments

Epic Games Divests Sketchfab and ArtStation

https://kitbash3d.com/pages/kitbash-acquires-sketchfab-and-artstation-kitbash3d
3•astlouis44•10m ago•0 comments

Continual Learning Needs More Nuance

https://vivekhaldar.com/articles/continual-learning-needs-more-nuance/
1•gandalfgeek•10m ago•0 comments

A browser-based financial calculator suite for freelancers built with OpenCode

https://everycentcalc.biz.id/
1•Keevan•12m ago•0 comments

Why are we choosing AI for just repetitive jobs?

1•ozymand•12m ago•0 comments

The offline messaging apps challenging internet shutdowns

https://restofworld.org/2026/india-github-geoblock-jack-dorsey-bitchat/
1•colinprince•13m ago•0 comments

Scoping and curating AI eval datasets

https://langfuse.com/academy/datasets/designing-great-datasets
3•annabellschaf•15m ago•0 comments

Collaboration

https://twitter.com/bekhovsgun/status/2086883869819551754
2•reb•16m ago•0 comments

LLMs and Humans Are Cognitive Cousins

https://preposterousuniverse.com/podcast/2026/08/10/363-chandra-sripada-on-how-llms-and-humans-ar...
1•quick_brown_fox•16m ago•0 comments

Autopoietic Ethics

https://www.guidavid.com/writing/autopoietic-ethics
1•gdss•17m ago•0 comments

Looking at Tarpit and LLM Maze Stats

https://www.bentasker.co.uk/posts/blog/the-internet/the-efficacy-of-tarpits-in-2026.html
1•speckx•17m ago•0 comments

Students Skinned a Bear in a Dorm. Cornell Realized It Should Ban That

https://www.nytimes.com/2026/08/07/nyregion/cornell-student-bear-meat.html
2•7402•19m ago•0 comments

AI Interviews Are Moving Hiring into the Middle of the Night

https://ai-updates.net/ai-interviews-moving-hiring-middle-night/
1•ashurandi•20m ago•1 comments

You spend more when prices end in .99 (2018)

https://kenthendricks.com/99-cent-prices/
1•downbad_•21m ago•0 comments

Ask HN: New Projet Backup

1•dobibag•21m ago•0 comments

The Deslop Stack Fallacy: Why Style Rules Hurt Thinking Quality

https://kondasamy.com/blog/2026/deslop-stack-fallacy-style-rules-hurt-thinking/
1•kqr•24m ago•0 comments

Sanders Calls on Tech Giants to Pause Development of Out-of-Control AI

https://www.sanders.senate.gov/press-releases/news-sanders-calls-on-tech-giants-to-pause-developm...
3•ChrisArchitect•27m ago•1 comments

IPython is all you need

https://nathancooper.io/blog/2026-08-10-ipython-is-all-you-need
1•coop57•29m ago•0 comments

Theo Jaffee on Becoming AGI-Pilled

https://www.thenewcritic.com/p/present-at-the-creation
1•ekluger•29m ago•0 comments