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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!

Google launches selfie video sign-in

https://blog.mega.io/google-launches-selfie-video-sign-in
1•dotcoma•1m ago•0 comments

The Software Should Work conference worked

https://isaacvando.com/software-should-work-worked
1•crowdhailer•1m ago•0 comments

Cardiovascular Disease Infographic

https://world-heart-federation.org/resources/cardiovascular-disease-infographic/
1•teleforce•2m ago•0 comments

BuiltWith MCP Registry

https://builtwith.com/mcp-registry
1•garazy•5m ago•1 comments

Oracle severed 21,000 employees during an AI spending spree

https://finance.yahoo.com/technology/ai/articles/oracle-severed-21-000-employees-114500493.html
1•taubek•5m ago•0 comments

Calm technologies that excite me

https://abhi.now/blog/calm-technologies/
1•birdculture•7m ago•0 comments

Topologically Consistent Multi-View 3D Head Reconstruction

https://syntec-research.github.io/SHELLS/
1•Palmik•7m ago•0 comments

Beyond Static Summarization: Proactive Memory Extraction for LLM Agents

https://arxiv.org/abs/2601.04463
1•ankitg12•11m ago•0 comments

Ask HN: Convince me to not to shelve my app (I've decided to)

1•asdfbank•12m ago•0 comments

Computer science enrollment fell for the first time in 20 years

https://www.businessinsider.com/computer-science-enrollment-fell-after-chatgpts-rise-economist-sa...
3•EasternEuroDev•15m ago•0 comments

Show HN: 100% Free, private meeting notes that never leave your Mac

https://oatsnote.com/
3•jarvisceo•17m ago•0 comments

HN: FlowShelf –free,native macOS shelf/clipboard/screenshot app,on-device AI

https://flowshelf.app/
1•abukadery•17m ago•0 comments

Frontpages of the EU

https://frontpages.eu
1•brnt•18m ago•3 comments

AI coding agents should optimize for less owned code

https://www.openenergytransition.org/posts/ai-coding-agents-should-optimize-for-less-owned-code
1•lyoncy•19m ago•0 comments

Kimi K3 found 19 0days in latest Redis 8.8.0 in 1.5hrs

https://github.com/berabuddies/redis-poc
1•doanbactam•20m ago•1 comments

Snake fossil sheds light on why lizards lost their limbs and started slithering

https://theconversation.com/80-million-year-old-snake-fossil-sheds-light-on-why-lizards-lost-thei...
2•janandonly•23m ago•0 comments

Show HN: Sealos – deploy a full-stack GitHub repo and troubleshoot the live app

https://sealos.io/
3•dedicate•24m ago•1 comments

AI Overviews could push Reddit to end its $60M-a-year deal with Google

https://www.neowin.net/news/ai-overviews-could-push-reddit-to-end-its-60-million-a-year-deal-with...
2•01-_-•24m ago•0 comments

Amazon and Microsoft pivot cloud gaming strategies to target different players

https://www.cnbc.com/2026/07/23/amazon-microsoft-cloud-gaming.html
2•01-_-•25m ago•0 comments

Jolt: Clojure on Chez Scheme

https://yogthos.net/posts/2026-07-02-jolt.html
1•ephaeton•27m ago•1 comments

Show HN: Jharu – Open-Source AI and Dev Junk Cleaner for Mac and PC

https://github.com/riponcm/Jharu
1•riponcm•27m ago•0 comments

The Ever-Receding Pocket

https://zhenyi.gibber.blog/the-ever-receding-pocket
2•zhenyi•28m ago•0 comments

About the August 2026 Total Solar Eclipse

https://www.timeanddate.com/news/astronomy/10-things-aug-2026-eclipse
1•chmaynard•30m ago•0 comments

Agent Sabotage with Deceitful Commit Message;

https://github.com/MasihMoafi/Elpis
1•masihmoafi•30m ago•0 comments

On AI

https://jcs.org/2026/07/23/ai
2•ingve•30m ago•0 comments

Reaction: Scan Logs for Patterns and Take Action

https://reaction.ppom.me/intro/
1•joahua•32m ago•0 comments

Nathan Barley

https://en.wikipedia.org/wiki/Nathan_Barley
1•ustad•43m ago•0 comments

Leaky Language Models: Stealing Architecture and Inference Optimizations

https://arxiv.org/abs/2607.20723
1•sbulaev•43m ago•0 comments

The Hardest Way to Make a GIF

https://blog.willgrant.org/2026/07/23/the-hardest-way-to-make-gif.html
1•plaguna•45m ago•0 comments

Show HN: Continuum – switch AI coding agents without re-explaining your project

https://github.com/AnasNafees1802/continuum
1•AnasNafees101•45m ago•0 comments