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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!

AI development tools shouldn't be faster horses

https://bayinformationsystems.substack.com/p/the-problem-with-faster-horses
1•anax32•2m ago•0 comments

Regular Building Maintenance

1•Servicecare•2m ago•0 comments

CLI to estimate Cloudflare bill before it surprises you

https://github.com/michaloo/flareclerk
1•michaloo•3m ago•1 comments

Hetzner Prices increase 30-40%

https://docs.hetzner.com/de/general/infrastructure-and-availability/price-adjustment/
1•williausrohr•4m ago•0 comments

Show HN: MCP tools for AI-driven E2E testing across 10 platforms

https://github.com/ai-dashboad/flutter-skill
1•charlie-w•11m ago•0 comments

How Nick Land Became Silicon Valley's Favorite Doomsayer

https://www.newyorker.com/culture/the-lede/silicon-valleys-favorite-doomsaying-philosopher
1•rbanffy•11m ago•0 comments

The Zen of DevOps

https://www.zenofdevops.org/
1•TBNL•11m ago•0 comments

Become the Main Character of Your Life Before It's Too Late

https://doingtheimpossible.substack.com/p/become-the-main-character-of-your
1•davidgoudet•12m ago•0 comments

Motia: A framework and language agnostic back end

https://www.motia.dev/
1•MaxMonteil•14m ago•0 comments

What I Learned After Building 3 TV Apps Coming from Mobile

https://dinkomarinac.dev/blog/what-i-learned-after-building-3-tv-apps-coming-from-mobile/
2•dinko7•14m ago•0 comments

Show HN: Implementing ping from the Ethernet layer (ARP,IPv4,ICMP in user space)

https://github.com/v420v/ping
1•ibuki256•14m ago•1 comments

What's good career for long run now? back end-dev – AI dev – DevOps

1•triggered_code•17m ago•1 comments

Show HN: I built a tool that generates and deploys websites in ~24h

https://www.promptpageai.com/
1•Tippel•24m ago•2 comments

Agents evolving in a SIM, who becomes the top dog and what are they fighting for

https://github.com/NetMindAI-Open/NexusAgent
1•Demi369•27m ago•1 comments

Corita Kent challenged the church and the art world with her creations

https://designexplained.substack.com/p/corita-kent-learning-by-heart
1•kaizenb•29m ago•0 comments

Turn your MacBook's Notch into a file sharing portal

https://www.filenotch.com/
2•EmuSad•33m ago•1 comments

Sam Altman would like to remind you that humans use a lot of energy too

https://techcrunch.com/2026/02/21/sam-altman-would-like-remind-you-that-humans-use-a-lot-of-energ...
4•sfifs•34m ago•2 comments

Drowse: Nix dynamic derivations made easy

https://github.com/figsoda/drowse
1•birdculture•35m ago•0 comments

Show HN: Elev8or - A structured creator marketplace for brands

https://www.elev8or.io
1•Sourabhsinr•39m ago•0 comments

Resonix AG – AI Agent Framework

https://github.com/mangiapanejohn-dev/Resonix-AG
1•Resonix•39m ago•1 comments

The Evolution of Software Engineering

https://djpardis.medium.com/the-evolution-of-software-engineering-from-fortran-to-llms-63d2427a3e73
1•djpardis•47m ago•1 comments

Show HN: AI Timeline – 171 LLMs from Transformer (2017) to GPT-5.3 (2026)

https://llm-timeline.com/
2•ai_bot•48m ago•3 comments

Mathematics in the Library of Babel

https://www.daniellitt.com/blog/2026/2/20/mathematics-in-the-library-of-babel
1•salutis•48m ago•0 comments

Show HN: Performant, cross-device analytical processing research with tinygrad

https://github.com/ronfriedhaber/autark
1•ronfriedhaber•50m ago•0 comments

Source Code Location Hashing for Immediate-Mode APIs

https://jakubtomsu.github.io/posts/source_code_location_hashing/
1•ibobev•51m ago•0 comments

You don't need free lists

https://jakubtomsu.github.io/posts/bit_pools/
2•ibobev•52m ago•0 comments

LinkSnap

https://linksnap.world
1•nirmalh•52m ago•1 comments

Spritework on the Commodore 64

https://bumbershootsoft.wordpress.com/2026/02/21/spritework-on-the-commodore-64/
1•ibobev•53m ago•0 comments

Slack-to-Claude Code CLI gateway for solo developers

https://github.com/ktamas77/claudeway
1•pro_methe5•55m ago•0 comments

There are no statistics in the Kingdom of God (2023)

https://www.experimental-history.com/p/there-are-no-statistics-in-the-kingdom
1•Miraltar•57m ago•0 comments