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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!

Show HN: Wake-word spotter with a constant 5 KB state, running in the browser

https://awareliquid-o1-sound-demo.static.hf.space/index.html
1•EverestAn•1m ago•0 comments

Extracting Tasks from Millions of Agent Runs

https://laminar.sh/blog/extracting-tasks-from-agent-runs
1•rainhunter•4m ago•0 comments

Diesel prices fall as EU considers releasing 50M barrels under Trump pressure

https://www.ft.com/content/97200b07-755c-40ce-a50b-b51666bd4b7e
1•alephnerd•5m ago•0 comments

Claude-Shaped Science

https://www.anthropic.com/research/claude-shaped-science
4•famouswaffles•7m ago•1 comments

Benchmarking retrieval for agents on messy real-world company knowledge

https://www.kapa.ai/blog/company-knowledge-bench
1•emil_sorensen•7m ago•0 comments

GamesByAI – 528 browser games made with AI, and which tools made them

https://gamesbyai.win/stats/
1•kvickan•9m ago•0 comments

Nobody Is Thinking Anymore

https://yusufaytas.com/nobody-is-thinking-anymore
5•workatwork•9m ago•0 comments

Researchers Drove a Chinese EV into an Underground Mine. It Kept Calling China

https://autos.yahoo.com/ev-and-future-tech/articles/researchers-drove-chinese-ev-underground-1557...
1•cainxinth•11m ago•0 comments

TickTick knows what you planned. Vulpie knows what you did

https://medium.com/@vulpie.ai.support/ticktick-knows-what-you-planned-vulpie-knows-what-you-actua...
1•VulpieAi•11m ago•0 comments

Nvidia/OpenShell: Safe, private runtime for autonomous AI agents

https://github.com/NVIDIA/OpenShell
1•gmays•13m ago•0 comments

Show HN: Wrapper – open a live terminal session from your phone

https://www.wrapper.sh/
1•icanvardar•13m ago•0 comments

The Looming Closure of China's AI Frontier

https://www.aei.org/foreign-and-defense-policy/the-looming-closure-of-chinas-ai-frontier/
2•ironyman•14m ago•0 comments

Slowly, then all at once: AI agents that know how a company works

https://www.nijho.lt/post/mindroom-at-ionq/
1•msmalina•16m ago•0 comments

Show HN: Hotel Lobby AI Video Generator – Two Photos to Rap Duet

https://hotellobbygenerator.net/
1•jerry5678•17m ago•0 comments

What MkDocs 2.0 means for your documentation projects

https://squidfunk.github.io/mkdocs-material/blog/2026/02/18/mkdocs-2.0/
1•taubek•18m ago•0 comments

Anyone Can Build an App Now, but Who Is Going to Pay for It?

https://www.vincentschmalbach.com/anyone-can-build-an-app-now-who-will-pay-for-it/
3•vincent_s•19m ago•2 comments

Don't Look Up

https://chrysalisbyauke.substack.com/p/dont-look-up
2•Poefke•20m ago•1 comments

Boston Dynamics Robot Hands

https://bostondynamics.com/blog/robot-hands-for-modern-ai-and-real-work/
2•zhoge•20m ago•0 comments

Show HN: Spens sandboxed, observable coding agents

https://spens.refwd.ai/
1•floydhead01•22m ago•0 comments

TransCAPI – UK bus and train API that measures how late things run

https://www.transcapi.com/
1•tcdc•22m ago•0 comments

GPT-6 Astra plays World of Warcraft for the first time with agent-wow

https://agent-wow.sh/gpt-6-astra-plays-world-of-warcraft-for-the-first-time-with-agent-wow/
2•almostlit•25m ago•0 comments

Subscription Price Increase for Evernote

https://twitter.com/FiachraRM/status/2105859778283221324
2•serhack_•25m ago•0 comments

The Legend of von Neumann [pdf]

https://gwern.net/doc/math/1973-halmos.pdf
3•suopspaces•26m ago•1 comments

Nvidia DGX Spark 64GB Gives Developers More Ways to Build and Scale Local AI

https://blogs.nvidia.com/blog/local-ai-dgx-spark-64gb-sync/
2•6thbit•26m ago•0 comments

The 12th-century military disaster that forever changed global finance

https://bigthink.com/books/a-fabulous-debt/
2•RickJWagner•27m ago•0 comments

Future of PM-Tools

1•heurekamala•27m ago•0 comments

Protected Quick Tunnels: simple accountless authentication for your next project

https://blog.cloudflare.com/protected-quick-tunnels/
1•6thbit•27m ago•0 comments

My Valuation Dislocations of September

https://michaelhillaert1.substack.com/p/valuation-dislocation-september-2026
1•michaelhillaert•28m ago•0 comments

Stanford prof is beating the drum for a new protocol to replace TCP

https://www.theregister.com/networks/2026/10/01/stanford-prof-is-beating-the-drum-for-a-new-proto...
1•rbanffy•28m ago•0 comments

Major Updates to Cloudflare Observability

https://blog.cloudflare.com/one-observability-platform/
2•6thbit•28m ago•0 comments