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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!

Susan Pickard: Daughters Who Will Never Be Mothers

https://www.compactmag.com/article/daughters-who-will-never-be-mothers/
1•donsupreme•20s ago•0 comments

Six Months of Writing Code Exclusively with Agents

https://blog.exe.dev/engineering-with-ai
1•bryanmikaelian•21s ago•0 comments

Library for Lidar point cloud and 4D geometry processing

https://github.com/open4dfoundation/Open4D
1•hex823•59s ago•1 comments

Omarchy Linux Just Got $8M from Tech's Biggest Names

https://itsfoss.com/news/omarchy-launches-omacom-foundation/
2•eightorbit•1m ago•0 comments

Government admits water system cyberattacks were worse than first reported

https://www.nbcchicago.com/investigations/government-admits-water-system-cyberattacks-were-worse-...
1•toomuchtodo•2m ago•0 comments

Smuf – A self-hosted HTTP tunnel written in Go

https://github.com/cosmind-rusu/smuf
1•cosminrusu•2m ago•0 comments

Show HN: Algolassi – A developer-focused site for .NET, MAUI, Blazor and SQL

https://algolassi.online/
1•noobplus•3m ago•0 comments

Kubernetes cleans house, bins legacy kube-DNS, IPVS, and cgroup v1

https://www.theregister.com/devops/2026/08/26/kubernetes-cleans-house-bins-legacy-kube-dns-ipvs-a...
1•croemer•3m ago•0 comments

First patient to undergo live AI-assisted brain surgery has tumor removed

https://www.bbc.com/news/articles/cjwg5n7y68xo
1•DGAP•3m ago•0 comments

Got tired of reconnecting MCPs every time, so we built the personal MCP wallet

https://mochipi.dev
1•luigipederzani•3m ago•0 comments

Detection Is a Research Discipline, Not a Rule Library

https://vega.io/blog/detection-is-a-research-discipline-not-a-rule-library
1•gk1•5m ago•0 comments

Show HN: 1Presence – AI with memory at scale, layered recall and a vault you own

https://1presence.com/
1•Cloud9Trader•6m ago•0 comments

So Long, TUI Sidebar

https://ampcode.com/news/so-long-tui-sidebar
2•tosh•9m ago•1 comments

AC2 Protocol: The missing security layer for AI agents

https://www.ac2protocol.org
3•josephcecala•9m ago•2 comments

The Unwelcoming States of America

https://www.economist.com/leaders/2026/08/27/the-unwelcoming-states-of-america
8•tumdum_•10m ago•0 comments

Harness Engineering

https://Habitat-Thinking.github.io/ai-literacy-superpowers/plugins/ai-literacy-superpowers/explan...
5•tomrod•10m ago•0 comments

Scientists Discover Vast Underground 'Anomaly' on Mars

https://www.404media.co/scientists-discover-vast-underground-anomaly-on-mars/
5•Brajeshwar•12m ago•0 comments

The engineer's case for building private markets technology

https://engineering.vega-alts.com/the-engineers-case-for-building-private-markets-technology-ab4a...
4•gk1•12m ago•0 comments

Years of reported brain injuries linked to a Six Flags roller coaster

https://www.cnn.com/2026/08/27/us/six-flags-rollercoaster-brain-injury-invs
2•cwwc•12m ago•2 comments

Show HN: Nanointerpret – LLM Interpretability Playground

https://nanointerpret.pages.dev/
3•belluxx•12m ago•0 comments

Selling SaaS in India

https://embedworkflow.com/blog/selling-saas-in-india/
4•ewf•13m ago•0 comments

Remembering Rishi Sanyal, DPReview's Former Science Editor

https://www.dpreview.com/news/remembering-rishi-sanyal-dpreviews-former-science-editor-a-rare-mix...
2•10729287•14m ago•0 comments

Trade (and Tariffs)

https://xkcd.com/3290/
10•throw0101d•16m ago•1 comments

Schools should be businesses, but what's the product?

https://saigaddam.medium.com/schools-should-be-businesses-but-whats-the-product-eadd042d841a
2•ChaitanyaSai•16m ago•0 comments

Watch AI Agents play a game for real money

https://agentofempires.com/
2•Jrothmann•17m ago•1 comments

Never Launch Alone

https://launchgenius.app
8•leejamiesj•20m ago•2 comments

Apple threat notifications and spyware: what everyone should know

https://www.accessnow.org/apple-threat-notifications-and-spyware/
2•ricobecks•20m ago•0 comments

U.S. considers fresh round of tariffs on semiconductors, report says

https://www.cnbc.com/2026/08/27/trump-semiconductor-tech-tariffs.html
5•mikhael•20m ago•0 comments

Show HN: Pause – weekly curated 1:1 coffee matches for London professionals

https://joinpause.co/
17•tanaysaboo123•20m ago•6 comments

Three UK airports hit by cyber-attack with data of 8.7M customers accessed

https://www.theguardian.com/business/2026/aug/27/uk-airports-operator-cyber-attack-customer-data-...
4•chrisjj•21m ago•0 comments