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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!

AI-Assisted Starling Desktop Introduces 3D View

https://www.phoronix.com/news/Starling-0.5-3D-Desktop
1•starlingos•1m ago•0 comments

US halts flights at busy East Coast airports, says fiber line cut

https://www.reuters.com/world/us/faa-halts-some-us-east-coast-flights-due-communication-issues-20...
2•allanbreyes•3m ago•0 comments

Developmental xenocortication using human-derived organoids in mice

https://www.nature.com/articles/s41586-026-11032-2
1•bookofjoe•3m ago•0 comments

We gave every managed cloud agent a durable SQL database

https://docs.opencomputer.dev/agents/database
1•iacguy•4m ago•0 comments

One Hundred Days of Fatherhood

https://suriya.cc/essays/100days/
1•suriyaG•4m ago•0 comments

GLM 5.3 Hosted by Mistral

https://twitter.com/mistralvibe/status/2102056993531871446
1•abc42•4m ago•0 comments

Gravity Linux Alpha Release: Linux on the M4 Mac Mini with GPU and DCP Support

https://gravitylinux.org/blog/early-alpha-m4-mac-mini/
1•ADevWithAnIdea•6m ago•0 comments

Robot Relations Departments: The New Corporate Reality

https://www.techbuzz.ai/articles/robot-relations-departments-the-new-corporate-reality
1•Vaslo•8m ago•0 comments

Mullet of Log Processing: Determinism in the Front, AI at the Back (Expanso/Jev)

https://expanso.io/blog/log-triage-expanso-jev/
2•TheIronYuppie•9m ago•0 comments

Show HN: VisionOS 27, iOS 27 object tracking demo – placing objects eyes closed

https://github.com/robomex/visionOS-27-iOS-27-Object-Tracking-Demo
1•robomex•10m ago•0 comments

How to Limit What Apple's New Siri AI Can Access in iOS 27

https://www.eff.org/deeplinks/2026/09/how-limit-what-apples-new-siri-ai-can-access-ios-27
2•paimapi•10m ago•0 comments

Anthropic, OpenAI et al. face antitrust suit for agreeing to slow AI development

https://www.tomshardware.com/tech-industry/big-tech/anthropic-openai-spacexai-and-google-face-ant...
8•MC995•11m ago•0 comments

Help 404 Media Find Out How Your Local Police Are Surveiling You

https://www.404media.co/is-your-city-using-axon-license-plate-cameras-we-need-your-help/
6•paimapi•11m ago•0 comments

Why Does an NPM Math Library Need an Encrypted Loader?

https://safedep.io/mathmain-encrypted-loader/
4•abhisek•11m ago•0 comments

Right-sizing Databricks job clusters, automatically

https://altimate.ai/blog/right-sizing-databricks-job-clusters-automatically
1•frasermarlow•12m ago•0 comments

No protocol fees. No investors

https://basicswapdex.com/donations
1•dRK-U•13m ago•0 comments

Show HN: MicroLLM lab – try small LMs in browser, see tok/s and accuracy

https://github.com/robss2020/microllm-lab
1•logicallee•13m ago•0 comments

Windows Exploitation Techniques: Dangling COM Object Registrations

https://projectzero.google/2026/09/windows-dangling-com.html
1•dimonomid•14m ago•0 comments

Boomers love making AI images of their grandkids. Millennial parents hate it

https://www.businessinsider.com/grandparents-ai-images-grandkids-privacy-parents-2026-9
5•randycupertino•15m ago•0 comments

SnoozeOps – Scheduled sleep for AWS and GCP dev environments

https://snoozeops.io
1•tiagotemporin•15m ago•0 comments

Paramount settles with US states in big step towards closing Warner Bros merger

https://www.reuters.com/legal/litigation/paramount-settles-with-california-other-states-clearing-...
4•JumpCrisscross•15m ago•0 comments

Show HN: Conway's Game of Life in boot sector

https://github.com/0xAX/BootLife
1•0xAX•16m ago•0 comments

Twenty-Five Years Upstream

https://www.igalia.com/2026/09/21/Twenty-Five-Years-Upstream.html
2•Tomte•19m ago•0 comments

Predicting the Present

https://kevinkelly.substack.com/p/predicting-the-present
1•thm•19m ago•0 comments

U.S. Small Biz Can't Ship to the EU Anymore

https://glog.glennf.com/blog/2026/09/17/u-s-small-biz-cant-ship-to-the-eu-anymore/
3•alsetmusic•20m ago•0 comments

Is This Houston Strip-Mall Joint the Busiest Restaurant?

https://www.nytimes.com/2026/09/21/dining/agas-houston-uber-eats-indian-pakistani-food.html
1•jbredeche•20m ago•0 comments

A new O(log N) algorithm for the egg-dropping problem

https://arxiv.org/abs/2602.22870
3•tuluvit•21m ago•0 comments

MCPJam – MCP server testing, debugging and evals

https://www.mcpjam.com
1•todsacerdoti•21m ago•0 comments

86" 3D Display

https://lookingglassfactory.com/86-hld
2•E-Reverance•25m ago•0 comments

Apple Copland D11E4 Booting in the Browser

https://www.pagetable.com/300
4•luu•29m ago•0 comments