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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•1y 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!

Apple seeks to buy memory chips from blacklisted Chinese company

https://www.ft.com/content/d72a25e2-7bde-4aa9-bd8d-0c4f3d6cb2cb
2•ksec•2m ago•1 comments

The PM's Guide to Managing AI Debt

https://newsletter.artofsaience.com/p/the-pms-guide-to-managing-ai-debt
1•mooreds•3m ago•0 comments

You've tried DuckDuckGo and Brave Search, now get serious with SearXNG

https://www.neowin.net/editorials/youve-tried-duckduckgo-and-brave-search-now-get-serious-with-se...
3•philonoist•4m ago•0 comments

Liquid-Cooling a TE Connectivity 800V DC Busbar and More from the Wiwynn Booth

https://www.servethehome.com/liquid-cooling-a-te-connectivity-800v-dc-busbar-and-more-from-the-wi...
1•ksec•6m ago•0 comments

Text Files as a User Interface

https://ratfactor.com/cards/text-files-as-ui
3•birdculture•9m ago•0 comments

Show HN: HotFX Pseudorandom – value noise in a CSS variable via custom element

https://fx.hot.page/pseudorandom
2•WebBurnout•9m ago•0 comments

Passkey Central

https://www.passkeycentral.org/home/
2•mooreds•10m ago•0 comments

Microsoft extends free Windows 10 security updates until October 12, 2027

https://www.tomshardware.com/software/windows/microsoft-extends-free-windows-10-security-updates-...
2•aleph_minus_one•13m ago•0 comments

Show HN: Ocarina – Automate and test MCP servers from YAML, no LLM

https://github.com/msradam/ocarina
2•msradam•13m ago•0 comments

The State has entered the Model Loop

https://peteridah.substack.com/p/the-state-has-entered-the-model-loop
2•peteridah•16m ago•0 comments

Back to the good old times – Win 7 for Debian (2024)

https://mehdy.eu/back-to-the-good-old-times-win-7-for-debian/
2•TuringTux•19m ago•0 comments

Distributed LLM Inference with LLM-d

https://cefboud.com/posts/llm-d/
3•cefboud•19m ago•0 comments

Double threat to privacy: Chat Control 1.0 and 2.0 are back

https://old.reddit.com/r/europe/comments/1ugc4td/double_threat_to_privacy_chat_control_10_and_20/
3•nickslaughter02•19m ago•0 comments

Height of Harmonic Numbers

https://www.johndcook.com/blog/2026/06/27/height-of-harmonic-numbers/
2•ibobev•20m ago•0 comments

Art by Maths

https://www.mathchronicles.org/copy-of-the-math-behind-the-rsa-encry
2•jruohonen•20m ago•0 comments

The Demoralization of the White-Collar Worker

https://nooneshappy.com/article/the-demoralization-of-the-white-collar-worker/
2•zdw•21m ago•0 comments

Show HN: Use any SVG as QR code On Dots

https://bar.codes/
2•Ciaranio•21m ago•0 comments

Four New Chameleon Species Found in Tropical "Sky Islands"

https://nautil.us/four-new-chameleon-species-found-in-tropical-sky-islands-1282292
2•Brajeshwar•24m ago•0 comments

Thousands more artists join Ireland's basic income plan

https://rgmii.org/blog/thousands-more-artists-join-irelands-basic-income-plan/
3•colinprince•25m ago•1 comments

Show HN:I got tired of spending 3hrs daily on job applications,so I automated it

https://jobspire.co.in/
3•cbyteai•25m ago•1 comments

Students Are Doing Worse Than You Think

https://www.economist.com/international/2026/06/25/students-are-doing-worse-than-you-think
2•karakoram•28m ago•1 comments

A peek into Reddit's anti-spam internals

https://lyra.horse/blog/2026/06/reddit-spam-internals/
6•OuterVale•28m ago•0 comments

Americans Are in a Sour Mood as the Country Turns 250

https://www.pewresearch.org/2026/06/12/on-the-countrys-250th-anniversary-the-american-people-are-...
2•karakoram•30m ago•0 comments

Ask HN: Which Zig version to use for my thesis?

2•xuinnz•38m ago•0 comments

Show HN: AI-whisper – Claude works better when Codex watches its back

https://ai-creed.dev/projects/ai-whisper/
2•vuphanse•38m ago•0 comments

Show HN: Apex-1-flash, 4B LLM finetuned on RTX 5070

https://huggingface.co/OrbitAIEU/Apex-1-flash
2•Qmay_Dev•39m ago•0 comments

Show HN: Discover content in any YouTube channel with RAG

https://askchannel.ai
2•nexus2045•40m ago•0 comments

Goodbye, Scientific American

https://www.lawyersgunsmoneyblog.com/2026/06/goodbye-scientific-american
4•u1hcw9nx•41m ago•1 comments

Free the Icons

https://weblog.rogueamoeba.com/2026/06/26/free-the-icons/
2•zdw•41m ago•0 comments

SumUp down across Europe (again)

https://status.sumup.com/europe/incidents/01KW4PXNYDDPRXZQ3GS5ZQA6CY#updates
2•mittermayr•44m ago•0 comments