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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•11mo 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!

Nev – keyboard focused GUI and terminal text editor

https://github.com/Nimaoth/Nev
1•archargelod•1m ago•0 comments

I used to generically engineer plants to increase yield,now I sell garlic online

https://Demeterfamilyfarm.com
1•Hilliard_Ohiooo•2m ago•0 comments

XOXO Festival Archive

https://xoxofest.com/
1•surprisetalk•5m ago•0 comments

Introducing Data Exports

https://socket.dev/blog/introducing-data-exports
1•ilreb•11m ago•0 comments

Show HN: RustNmap

1•greatwallisme•12m ago•0 comments

These are the countries moving to ban social media for children

https://techcrunch.com/2026/04/23/social-media-ban-children-countries-list/
1•evo_9•18m ago•0 comments

AI agent designs a complete RISC-V CPU from 219-word spec sheet in just 12 hours

https://www.tomshardware.com/tech-industry/artificial-intelligence/ai-agent-designs-a-complete-ri...
1•maxloh•19m ago•0 comments

Fancy-Regex 0.18.0 Release

https://github.com/fancy-regex/fancy-regex/releases/tag/0.18.0
1•indentit•20m ago•1 comments

Why I Write (1946)

https://www.orwellfoundation.com/the-orwell-foundation/orwell/essays-and-other-works/why-i-write/
5•RyanShook•20m ago•0 comments

Vibe Check: GPT-5.5 Has It All

https://every.to/vibe-check/gpt-5-5
1•swolpers•21m ago•0 comments

Cert-Checker

https://github.com/mrtoadie/go-check-cert
1•ashitlerferad•25m ago•0 comments

A Eulogy for Vim

https://drewdevault.com/blog/Forking-vim/
2•signa11•25m ago•1 comments

Short and Long-Term Consequences of Intra-Household Disease Spread [pdf]

https://www.nber.org/system/files/working_papers/w29524/w29524.pdf
1•alphabetatango•30m ago•0 comments

Project Omni

https://github.com/misaeldasilva123ms96-commits/Projeto-Omni
1•zaydenrivas•33m ago•0 comments

Too much noise with AI startups

1•xtannotnoise•34m ago•0 comments

Apple Changes Prongs on MacBook Chargers; Breaks Compatibility

https://discussions.apple.com/thread/256262949?sortBy=rank
1•gardnr•34m ago•1 comments

Show HN: Trustless Campaigns – Gecko transforms brand-creator deals

https://www.geckovision.tech
1•ernanibmurtinho•35m ago•0 comments

A flood of useful security reports

https://lwn.net/Articles/1066581/
1•signa11•37m ago•0 comments

Show HN: Sprite sheets from prompts (Codex skill)

https://github.com/0x0funky/agent-sprite-forge
1•super135799•37m ago•0 comments

The George Business, by Roger Zelazny (1980)

https://www.eternal-flame.org/library/oldlibrary/georgebusiness.html
1•xeonmc•38m ago•0 comments

Canonical Releases Ubuntu 26.04 LTS Resolute Raccoon

https://ubuntu.com//blog/canonical-releases-ubuntu-26-04-lts-resolute-raccoon
2•jruohonen•38m ago•1 comments

Ireland must recuse itself from EU Presidency digital files

https://www.iccl.ie/press-release/ireland-recuse-eu-presidency-digital-files-enforce/
1•jruohonen•42m ago•2 comments

How Hard Is It to Open a File?

https://blog.sebastianwick.net/posts/how-hard-is-it-to-open-a-file/
1•ffin•44m ago•0 comments

US climate sees decline in both hot and cold extreme temperatures since 1899

https://phys.org/news/2026-04-climate-decline-hot-cold-extreme.html
1•plun9•47m ago•1 comments

Mojo language, any hardware. Systems-level performance. Pythonic syntax

https://www.modular.com/open-source/mojo
1•KnuthIsGod•48m ago•0 comments

Agyn: A Multi-Agent System for Team-Based Autonomous Software Engineering

https://arxiv.org/abs/2602.01465
1•wek•48m ago•0 comments

Bret Taylor's Sierra Buys YC-Backed AI Startup Fragment

https://techcrunch.com/2026/04/23/bret-taylors-sierra-buys-yc-backed-ai-startup-fragment/
1•zachdotai•53m ago•0 comments

Light-activated material offers new approach to carbon dioxide conversion

https://phys.org/news/2026-03-material-approach-carbon-dioxide-conversion.html
1•PaulHoule•53m ago•0 comments

Prompt engineering is dead, but Claude still tries

https://blog.exe.dev/prompt-engineering-is-dead
1•vinipolicena•53m ago•0 comments

Launching XOXO Explore

https://xoxofest.com/blog/2026-launching-xoxo-explore/
1•benwerd•56m ago•0 comments