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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•12mo 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!

Voting Before the Secret Ballot

https://www.historytoday.com/archive/feature/voting-secret-ballot
1•Petiver•46s ago•0 comments

Basic linear algebra algorithms (since C++26)

https://en.cppreference.com/cpp/numeric/linalg
1•tosh•1m ago•0 comments

ShinyHunters claims – 9k schools affected by Instructure Canvas data breach

https://edscoop.com/shinyhunters-claims-nearly-9000-schools-affected-by-canvas-data-breach/
1•Gaishan•1m ago•0 comments

Everyone gets faster writes: We turned off FPW's in Neon

https://neon.com/blog/turning-off-fpw-for-faster-writes
1•tosh•3m ago•0 comments

What Makes Axavive Different from Other Supplements?

1•DeclanGrimley•6m ago•0 comments

Does structured prompting change how LLMs reason, or just what they say?

https://doi.org/10.5281/zenodo.20116625
1•h_hasegawa•8m ago•0 comments

Democratizing AI Psychosis: Why Smart People Are Captured by AI Hype

https://perilous.tech/democratizing-ai-psychosis-why-smart-people-are-captured-by-ai-hype/
1•thoughtpeddler•11m ago•1 comments

Do you take after your dad's RNA?

https://knowablemagazine.org/content/article/living-world/2026/epigenetic-effects-of-sperm-on-off...
1•asplake•14m ago•0 comments

Typing Is Being Replaced by Whispering–and It's Way More Annoying

https://www.wsj.com/tech/typing-is-being-replaced-by-whisperingand-its-way-more-annoying-a804fee7
1•petethomas•16m ago•1 comments

Microsoft's African Data Center Falters on Payment Demands

https://www.bloomberg.com/news/articles/2026-05-10/microsoft-s-african-data-center-falters-on-pay...
1•1vuio0pswjnm7•16m ago•0 comments

Show HN: ChatbotX, an open-source alternative to ManyChat

https://github.com/ChatbotXIO/ChatbotX
1•hunterist•17m ago•0 comments

Study Finds iOS Users Have Shorter Relationships as Compared to Android Users

https://finance.yahoo.com/sectors/technology/articles/hanker-dating-study-finds-ios-185300885.html
3•iamkrazy•18m ago•1 comments

Chris Hohn's hedge fund slashes $8B Microsoft stake in warning over AI

https://www.ft.com/content/ac5d90a9-b010-4529-9616-706420920681
1•1vuio0pswjnm7•18m ago•0 comments

Clone Yourself into Agents

https://lorentz.app/blog-item.html?id=soulify-the-llm
1•baalimago•19m ago•0 comments

Miii – Claude Code-level terminal workflows offline, no API keys

https://www.npmjs.com/package/miii-cli
2•maruakshay•24m ago•0 comments

Social Cognition and Interpersonal Violence

https://www.pnas.org/doi/abs/10.1073/pnas.2519361123
1•neehao•26m ago•0 comments

Pi Slate – A Raspberry Pi5 handheld Linux cyberdeck with 5" 1920×720 touchscreen

https://www.cnx-software.com/2026/05/11/pi-slate-a-raspberry-pi-5-handheld-linux-cyberdeck-with-a...
1•anonymousiam•27m ago•1 comments

Microsoft's African data center falters on payment demands, Bloomberg reports

https://www.reuters.com/world/africa/microsofts-african-data-center-falters-payment-demands-bloom...
1•1vuio0pswjnm7•28m ago•0 comments

Why You Actually Want Machines Writing the Code for Your Next Flight

https://decodingvibes.com/blog/why-you-actually-want-machines-writing-the-code-for-your-next-flight/
1•altmanaltman•33m ago•0 comments

South Korea Exploring Using Hyundai Robots as Army Numbers Fall

https://www.bloomberg.com/news/articles/2026-05-11/south-korea-exploring-using-hyundai-robots-as-...
1•petethomas•37m ago•0 comments

Growling in a corner: Samuel Johnson's lost years

https://www.commonreader.co.uk/p/growling-in-a-corner-samuel-johnsons
1•pepys•39m ago•0 comments

Europe Is Losing Its Best Engineers – Not to Emigration, but to Management

https://andrulis.de/blog/20260429_management.html
1•taubek•41m ago•0 comments

Iran mulls taking control of all 7 cables passing through Strait of Hormuz

https://www.wionews.com/world/iran-to-take-full-control-of-all-7-undersea-internet-cables-passing...
4•jonah•44m ago•0 comments

The Trouble with Narrative History

https://thereader.mitpress.mit.edu/the-trouble-with-narrative-history/
2•Hooke•45m ago•0 comments

Geography Is Four-Dimensional

https://sive.rs/4d
1•Curiositry•45m ago•0 comments

Visual Generation Unlocks Human-Like Reasoning Through Multimodal World Models

https://arxiv.org/abs/2601.19834
2•felineflock•46m ago•0 comments

Blink – AI Assistant

https://blink-oi.vercel.app
1•Pascal1997•47m ago•0 comments

Neural Machine Perception

https://openstrate.com/
1•realitymatrixyz•49m ago•0 comments

A single 10,000 foot reel of digital microfilm: WAR.GOV/UFO

https://hypergrid.systems/war.gov-ufo-viewer/microfilm2?frame=12404&page=12404
1•keepamovin•49m ago•0 comments

The SEC plans to end quarterly reporting

https://keepitquarterly.org/
4•froglop•57m ago•0 comments