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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•6mo 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!

Neocities

https://neocities.org/
1•DeathArrow•1m ago•0 comments

Platform Pricing Comes at a Cost

https://www.wreflection.com/p/platform-pricing-comes-at-a-cost
1•nowflux•3m ago•0 comments

Amper Update, November 2025 – Extensibility Preview

https://blog.jetbrains.com/amper/2025/11/amper-update-november-2025/
1•clanky•4m ago•0 comments

EU–INC: Pan-European legal entity

https://www.eu-inc.org/
1•throwoutway•4m ago•0 comments

The failed socialist alternative to Los Angeles in the Mojave desert

https://kubicki.org/letters/the-dogs-of-llano-del-rio-ii/
3•kosmavision•4m ago•0 comments

Data center provider razes 55 homes to make room for Illinois campus

https://www.networkworld.com/article/2071209/data-center-provider-razes-55-homes-to-make-room-for...
2•mudil•5m ago•0 comments

The Varying Strictness of TypedDict in Python

https://snarky.ca/the-varying-strictness-of-typeddict/
1•BerislavLopac•5m ago•0 comments

Apache DataFusion 51.0.0 Released

https://datafusion.apache.org/blog/2025/11/25/datafusion-51.0.0/
2•killme2008•6m ago•0 comments

Fuzzy -simple tiny fuzzer written in Go

https://github.com/cecinuga/fuzzy
1•cecinuga•7m ago•0 comments

Show HN: WResume – Free Conversational Resume Editing and Built-In LaTeX Editor

https://www.wresume.ai/
1•skoushik•10m ago•0 comments

Video Downloader Pro – Download Videos from Any Website – Free Tool

https://plugmonkey.xyz/product/video-downloader-pro/
1•yazeedaloyoun•10m ago•0 comments

When Fake Security Is Mandated Real Security Becomes a Crime

https://techrights.org/n/2025/11/25/When_Fake_Security_Back_Doors_Disguised_as_Security_is_Mandat...
1•amcclure•15m ago•0 comments

Georgia Gkioxari Co-Leads Major 3D Perception Model Built on AI

https://www.caltech.edu/about/news/georgia-gkioxari-co-leads-major-3d-perception-model-built-on-ai
1•stmw•15m ago•0 comments

Ask HN - LaunchPad Replacement on MacOS

2•zahirbmirza•16m ago•1 comments

Counter Galois Onion: Improved encryption for Tor circuit traffic

https://blog.torproject.org/introducing-cgo/
1•wrayjustin•18m ago•0 comments

Slimmable Neural Amp Modeler Models

https://arxiv.org/abs/2511.07470
1•dtauzell•20m ago•0 comments

Misunderstanding That "Dependency" Comic

https://bertptrs.nl/2025/11/24/misunderstanding-that-dependency-comic.html
2•birdculture•20m ago•0 comments

Gemini 3 pro advanced biometric scan to find your famous twin

https://facejudge.com/
1•levigrace•21m ago•1 comments

The Whisper That Could've Rewritten History

https://ochatapp.substack.com/p/what-if-a-single-hey-this-is-wrong
1•petercode•21m ago•0 comments

Servo: Lightweight, high-performance alternative for embedding web technologies

https://servo.org/
1•doener•22m ago•0 comments

Mizar Language

https://mizar.uwb.edu.pl/language/
2•varjag•23m ago•0 comments

Speed: Engineering Airbyte's 4-10x Performance Breakthrough

https://airbyte.com/blog/speed-improvements
1•JakaJancar•23m ago•1 comments

Show HN: MCP Security Scanning Tool for CI/CD

https://smart.mcpshark.sh/
11•devops-coder•28m ago•0 comments

LLM Societies (they are social critters)

https://www.mslinn.com/llm/7998-social-llms.html
2•mike_slinn•28m ago•0 comments

ZoomInfo CEO Blocks Researcher After Documenting Pre-Consent Biometric Tracking

https://github.com/clark-prog/blackout-public
3•SignalDr•31m ago•1 comments

Show HN: A tiny browser-based voice-to-text tool (no signup, no tracking)

https://www.voicetotextonline.com/
1•digi_wares•32m ago•0 comments

The Local-First Comeback You Didn't See Coming

https://shivekkhurana.com/blog/sync-engines/
1•shivekkhurana•34m ago•0 comments

Topological turning points across the human lifespan

https://www.nature.com/articles/s41467-025-65974-8
1•bryanrasmussen•34m ago•0 comments

We Are Better Off Than a Century Ago

https://www.thenewatlantis.com/publications/why-we-are-better-off-than-a-century-ago
3•SCEtoAux•35m ago•2 comments

Walmart Is Exploring Bringing Ads to Sparky, Its New AI Shopping Agent

https://www.wsj.com/business/retail/walmart-is-exploring-bringing-ads-to-sparky-its-new-ai-shoppi...
2•fortran77•35m ago•1 comments