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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•9mo 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!

Ask HN: Exceptionally well-written research papers in CS/ML/AI?

1•b3rkus•21s ago•0 comments

Oh, good: Discord's age verification rollout has ties to Palantir co-founder

https://www.pcgamer.com/software/platforms/oh-good-discords-age-verification-rollout-has-ties-to-...
1•absqueued•1m ago•0 comments

A lightweight, fast, in-process vector database

https://github.com/alibaba/zvec
1•tanelpoder•1m ago•0 comments

OpenAI accuses DeepSeek of "free-riding" on American R&D

https://restofworld.org/2026/openai-deepseek-distillation-dispute-us-china/
3•billybuckwheat•6m ago•0 comments

Painting Is a Program, Poetry Is a Prompt: Rethinking AI's Role

1•mikasisiki•8m ago•0 comments

US FTC ramps up scrutiny of Microsoft over AI, cloud practices

https://www.reuters.com/legal/litigation/us-ftc-ramps-up-scrutiny-microsoft-over-ai-cloud-practic...
2•1vuio0pswjnm7•8m ago•0 comments

RevenueBack: Simple payment recovery for Stripe

https://revenueback.pages.dev
1•ezra_cos•11m ago•0 comments

Ask HN: Why Open-Source for Products/Startups?

1•dv35z•19m ago•1 comments

Oxide plans new rack attack

https://www.theregister.com/2026/02/13/whats_next_for_oxide_computer/
2•bcantrill•19m ago•0 comments

Tool to Surgically Remove Jail-Breaks from Open Weights LLM Models

https://twitter.com/elder_plinius/status/2022307944243618143
1•Osiris30•19m ago•0 comments

Worldspace

https://worldspace.is/
1•isaacbowen•19m ago•0 comments

Against the State: A Primer on Terrorism, Insurgency, and Protest

https://acoup.blog/2026/02/13/collections-against-the-state-a-primer-on-terrorism-insurgency-and-...
2•claytonwramsey•30m ago•0 comments

The Death of the Author

https://en.wikipedia.org/wiki/The_Death_of_the_Author
2•SmartHypercube•33m ago•0 comments

A $15M Mansion Designed Around Security

https://www.wsj.com/video/series/mansion/inside-a-15-million-mansion-designed-entirely-around-sec...
2•ThinkingGuy•33m ago•0 comments

Why do office chairs have 5 legs?

https://www.youtube.com/watch?v=kKt46Lch2bo
2•cyr0dj0hn•40m ago•0 comments

Built and shipped an iOS app from my phone while traveling Japan

2•lordokami•49m ago•2 comments

Career toolkit for laid-off engineers (from a recruiting firm)

https://www.goamaru.com/toolkit
1•goamaru•55m ago•1 comments

AgentRE-Bench: Can LLM Agents Reverse Engineer Malware?

https://www.agentre-bench.ai/
2•N3Xxus_6•56m ago•0 comments

Medicaid Open Data Viewer

https://www.medicaidopendata.org/
1•charlesxjyang•56m ago•0 comments

CLI tool for live communication between agents in different TUIs and subagents

https://github.com/aannoo/hcom
2•CjHuber•58m ago•0 comments

The Problem with Stainless Steel [video]

https://www.youtube.com/watch?v=KHJmQdvnfPE
2•dataflow•59m ago•0 comments

Show HN: Automate Mac with Codex: macOS Control MCP Demo

https://github.com/PeterHdd/macos-control-mcp
1•peterhddcode•1h ago•0 comments

The lifelong exercise that keeps Japan moving (2020)

https://www.bbc.com/worklife/article/20200609-the-life-long-exercise-that-keeps-japan-moving
4•surprisetalk•1h ago•0 comments

Australians diagnosed with rare tattoo-related vision loss

https://www.abc.net.au/news/health/2026-02-14/tattoo-eye-inflammation/106315444
3•stubish•1h ago•0 comments

Stanford Review: Is YC for Cowards?

https://stanfordreview.org/is-yc-for-cowards/
4•hedgehog0•1h ago•0 comments

Show HN: A Steve Jobs in Your Pocket AI Skill

https://openclaw.rocks/blog/ai-skills-are-the-new-apps
2•stubbi•1h ago•0 comments

Show HN: GuardLLM, hardened tool calls for LLM apps

https://github.com/mhcoen/guardllm
1•mhcoen•1h ago•0 comments

Day vs. 10 Years doing Van Life [video]

https://www.youtube.com/shorts/9j-tzn89teY
1•keepamovin•1h ago•0 comments

Elon Musk's xAI faces lawsuit threat over Mississippi data center air pollution

https://www.cnbc.com/2026/02/13/musks-xai-faces-threat-of-naacp-lawsuit-over-pollution-in-mississ...
7•MilnerRoute•1h ago•0 comments

ICE Agents Menaced Minnesota Protesters at Their Homes, Filings Say

https://www.nytimes.com/2026/02/13/us/minneapolis-ice-agents-protester-home-visits.html
11•xrd•1h ago•0 comments