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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•8mo 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!

Show HN: Infinijest, Video Feed Experiment

https://infinijest.com
1•throwawaste•7m ago•0 comments

Borges' Library of Babel Online

https://libraryofbabel.info/
1•lorenzohess•8m ago•1 comments

Scott Galloway Explains How You Can Stop Government Overreach

https://www.openculture.com/2026/01/scott-galloway-shows-how-you-can-stop-government-overreach-wi...
2•nomagicbullet•8m ago•0 comments

AI Subscription vs. H100 [video]

https://www.youtube.com/watch?v=SmYNK0kqaDI
2•owenpalmer•11m ago•0 comments

How to Donate to the Debian Project

https://www.debian.org/donations
1•move-on-by•13m ago•0 comments

Using an LLM Gateway to Keep My Agent Config Stable

https://medium.com/@pala_28493/how-to-power-clawdbot-with-advanced-llms-using-vivgrid-step-by-ste...
1•kubesphere2025•14m ago•0 comments

What I Learned Making 34 Novels with Claude Sonnet

https://triptych.writeas.com/what-i-learned-making-34-novels-with-claude-sonnet
1•triptych•16m ago•0 comments

Show HN: Seedance 2.0 Pro AI Video Generator

https://www.seedance2pro.net
1•Zach_HE•17m ago•0 comments

Prolog-blog-engine: blog engine in pure Prolog. 0 dependencies, Markdown, server

https://github.com/cryptoque/prolog-blog-engine
1•todsacerdoti•19m ago•0 comments

Period three implies Chaos (1975) [pdf]

https://www.its.caltech.edu/~matilde/LiYorke.pdf
1•nill0•19m ago•0 comments

37signals Isn't Smarter Than You, but They Are Different

https://www.nateberkopec.com/blog/37signals-is-not-smarter-than-you/
2•mefengl•20m ago•0 comments

Easy_Claude_code

https://github.com/study8677/easy_claude_code
1•study8677•23m ago•1 comments

How Photos Are Cabled Across Atlantic (1926 Illustration)

https://commons.wikimedia.org/wiki/File:Science_and_Invention_April_1926_-_How_Photos_Are_Cabled_...
2•retrac•28m ago•1 comments

I slopcoded an open source version of Xilly's GameMode after the X fiasco today

https://github.com/bensheed/OpenGameBoost
1•bensheed•32m ago•2 comments

Claude Code suggests .claudeignore to protect .env, reads it anyway

https://pastebin.com/dkbMUva7
2•rodavok01•35m ago•0 comments

Tinykit: Self-hosted Lovable/v0 alternative. With Realtime database and storage

https://github.com/tinykit-studio/tinykit
2•thunderbong•37m ago•0 comments

The Great California Wealth Exodus

https://www.thefp.com/p/the-great-california-wealth-exodus
3•fortran77•38m ago•1 comments

Microsoft Needs a Windows Social Contract

https://www.windowscentral.com/microsoft/windows-11/from-the-editors-desk-microsofts-biggest-wind...
2•chwtutha•41m ago•0 comments

Show HN: Compile Python libraries for TypeScript with type completion (umo)

https://github.com/AlaShiban/umo
1•ashiban•41m ago•0 comments

Heathrow Drops the Liquids Rule

https://flymag.com/heathrow-drops-the-liquids-rule-what-changes-at-lhr-and-how-close-the-u-s-real...
2•lxm•43m ago•0 comments

AI Content Disclosure for HTML

https://github.com/WICG/proposals/issues/261
1•nnx•49m ago•0 comments

Sepp Blatter suggests fans should not travel to US for World Cup

https://www.theguardian.com/football/2026/jan/26/sepp-blatter-suggests-fans-should-not-travel-to-...
6•KnuthIsGod•50m ago•1 comments

iOS 26.3 Adds Privacy Setting to Limit Carrier Location Tracking

https://www.macrumors.com/2026/01/26/ios-26-3-limit-precise-location/
3•dmmalam•56m ago•0 comments

Claude Code Ported LeelaChessZero CUDA Back End to ROCm: End of CUDA Moat

https://github.com/LeelaChessZero/lc0/pull/2375
1•CalChris•59m ago•0 comments

Agentic coding is accelerating app releases

https://www.coatue.com/c/takes/chart-of-the-day-2026-01-22
1•nl•59m ago•0 comments

Show HN: Free image-to-JSON converter (extract structured data from images)

https://imageat.com/image-to-json-convertor
1•incendies•1h ago•0 comments

I'm an apprentice electrician. I built this iOS app using only Claude

2•discovrapp•1h ago•2 comments

Russian Sandworm Hackers Blamed for Cyberattack on Polish Power Grid

https://www.securityweek.com/russian-sandworm-hackers-blamed-for-cyberattack-on-polish-power-grid/
1•Bender•1h ago•0 comments

The (digital) dynamic square: circular videos and other screen shape experiments

https://www.adamsebire.info/the-works/circular-videos-and-dynamic-squares-experimental-aspect-rat...
1•andsoitis•1h ago•0 comments

Show HN: An autopoietic agent forge for emergent, consensus-based AI ecosystems

https://github.com/jzkool/Aetherius-sGiftsToHumanity/blob/main/Architectural%20Software/Protogen_...
1•hiddenarchitect•1h ago•1 comments