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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!

Vinix – A modern operating system written in V

https://vinix-os.org/
1•hggh•59s ago•0 comments

Rabbit Hole: Minimum L-seams

https://www.fractalkitty.com/rabbit-hole-minimum-l-seams/
1•evakhoury•1m ago•0 comments

LLM Classification Is Feature Engineering

https://minimallysufficient.com/posts/llm-classification-is-feature-extraction/
1•minsufficient•1m ago•0 comments

Benchmarking Local LLM Servers: Llama.cpp, Llamafile, LM Studio, and Ollama

https://blog.mozilla.ai/benchmarking-local-llm-servers-llama-cpp-llamafile-lm-studio-and-ollama/
1•angpt•3m ago•0 comments

Carlo Rovelli book challenges science's understanding of reality and universe

https://www.npr.org/2026/09/14/nx-s1-5968442/on-the-equality-of-all-things-physics-carlo-rovelli
1•__rito__•3m ago•0 comments

Show HN: Pelmet – menu bar manager for macOS 27 that hides icons on demand

https://github.com/fif7y/pelmet
1•fif7y•4m ago•0 comments

Prompting large language models for quality ecological statistics

https://besjournals.onlinelibrary.wiley.com/doi/10.1111/2041-210x.70267?af=R
1•luispa•4m ago•0 comments

Show HN: Open-source AI teammates with their own computer

https://runerrand.dev/
4•shiqimei•4m ago•0 comments

Show HN: Live one minute of a stranger's memory, then leave one for the next

https://enterkronos.com/?memory=01&ref=hn
1•yohann_sidot•5m ago•0 comments

If a Lion Could Speak

https://blue-continuum.com/if-a-lion-could-speak
1•dnetesn•5m ago•0 comments

The Fossil Logic of the Industrial and AI Revolutions

https://blue-continuum.com/fossil-logic
1•dnetesn•6m ago•0 comments

CrowdSec Source Code Leak

https://www.crowdsec.net/blog/crowdsec-statement-source-code-exposure
1•eccgecko•7m ago•0 comments

Rate limits on GitLab.com are changing

https://about.gitlab.com/blog/rate-limit-change-2026/
2•darkwater•7m ago•0 comments

Visa, MC launch international card payments in Syria after US lifts sanction

https://www.reuters.com/world/middle-east/visa-mastercard-launch-international-card-payments-syri...
1•teleforce•8m ago•0 comments

Show HN: AutoYou – Self-hosted AI you reach from your phone over WebRTC

https://www.autoyou.me/try/
1•autoyou•8m ago•0 comments

Disarming the Slop Cannon (Ironically, with AI)

https://blog.expectedparrot.com/p/disarming-the-slop-cannon-ironically
1•john_horton•9m ago•1 comments

My Software Agnostic Window Management Setup

https://devz.cl/posts/software-agnostic-window-manager-setup/
1•DanielVZ•9m ago•0 comments

Good Morning, Your Toaster Is Compromised

https://nesbitt.io/2026/09/17/good-morning-your-toaster-is-compromised.html
1•torgeros•9m ago•0 comments

Show HN: VOSR 2 image upscaling, in the browser

https://getemerald.co/
1•gangster_dave•10m ago•0 comments

Show HN: GuardRail – 13 guards that stop Claude Code before it pushes to main

https://github.com/FvdHMBAI/guardrail
1•promptandbuild•11m ago•0 comments

Show HN: Chrome extension to view your tabs and switch between them

https://github.com/ringlochid/leotabs
1•ringlochid•11m ago•0 comments

Enhance My Photo

https://enhancemyphoto.net
1•huanghongbing•12m ago•1 comments

Maximizing Return-on-Feedback

https://avivbenyosef.com/maximizing-return-on-feedback/
1•avivby•12m ago•0 comments

TypeScript team chose Go over Rust

https://www.thetrueengineer.com/p/typescript-team-chose-go-over-rust
2•andrewstetsenko•13m ago•0 comments

Huawei's Ascend 960 SuperPoD: Interconnect Tech Combats U.S. Export Controls

https://asiaai.fyi/huawei-ascend-superpod-interconnect-export-controls/
1•ghernando•13m ago•0 comments

OpenAI's Misalignment Framework: A Tactical Bid to Preempt Global AI Governance

https://asiaai.fyi/openai-misalignment-framework-global-governance/
2•ghernando•14m ago•0 comments

Show HN: Infinite memory for OpenCode sessions (MemPalace plugin)

https://github.com/geco/opencode-mempalace-persistence
1•gecoy•15m ago•0 comments

Insecure by Design

https://ryan.science/blog/insecure-by-design
1•luispa•16m ago•0 comments

P-Hacking with Claude

https://vitaexmachina.substack.com/p/p-hacking-with-claude
1•sebg•16m ago•0 comments

The Golden Spike, and Resurrecting the Vale(n) Programming Language

https://verdagon.dev/blog/golden-spike-reviving-vale-valen
5•tommymcm•18m ago•0 comments