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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!

GPT-6 Astra Covertly Underperforms on Safety Research Tasks

https://thezvi.substack.com/p/gpt-6-astra-covertly-underperforms
1•eatitraw•1m ago•0 comments

Klepetan and Malena

https://en.wikipedia.org/wiki/Klepetan_and_Malena
1•hbarka•1m ago•0 comments

Show HN: Grocery Offer in Denmark

https://nyneon.net/supermarket-offers-denmark/
1•nynsam•1m ago•0 comments

Microsoft Researcher John Langford Exits. AI Frontiers Group Declared Finished

https://businessexaminer.ca/victoria-articles/item/microsoft-researcher-john-langford-exits-as-ai...
1•srean•1m ago•1 comments

Thinking Forth

https://thinking-forth.sourceforge.net
1•andsoitis•2m ago•0 comments

Beeble

https://beeble.ai
1•handfuloflight•3m ago•0 comments

US intelligence: Jensen Huang had affair with Chinese spy; linked to smuggling

https://www.tomshardware.com/tech-industry/artificial-intelligence/us-intelligence-believes-jense...
2•vrganj•4m ago•0 comments

Show HN: OS Grokbot, can run on Claude/codex subs

https://qorqbot.com
1•alpbahadur•5m ago•0 comments

Show HN: Jacq, a DSL that compiles model and kernel descriptions to CUDA

https://github.com/ImpossibleComputing/jacq
1•keithba•5m ago•0 comments

Nuclear Design Bureau – A Game Where You Design Nuclear Weapons

https://www.youtube.com/watch?v=WXQ3xQi20uM
1•LichenStone•6m ago•1 comments

Phony visa application and passport sites face U.S. government crackdown

https://this.weekinsecurity.com/phony-visa-application-and-passport-sites-face-u-s-government-cra...
2•moooooky•7m ago•1 comments

GeoWorks, Microsoft Windows' Upstart '90s Competitor

https://www.atlasobscura.com/articles/the-history-of-geoworks-microsoft-windows-upstart-90s-compe...
1•andsoitis•9m ago•0 comments

Infinix – Abandoned Local AI Agent Base Seeking Developers

https://github.com/Moonyeep/Infinix
1•Moonyeep•9m ago•0 comments

Show HN: Tumblr Likes Calendar: Browse Your Likes by Date

https://www.hakuren-dev.blog/
1•Hakurendev•9m ago•0 comments

AI tools I use (avg software developer)

https://fredrikmeyer.net/2026/11/07/how-i-use-ai-2026.html
1•FredrikMeyer•10m ago•1 comments

1325 Dutch hotels join mass claim lawsuit against Booking.com

https://nltimes.nl/2026/11/07/1325-dutch-hotels-join-mass-claim-lawsuit-bookingcom
1•Betelbuddy•10m ago•0 comments

Report alleges China linked to at least 18 overseas police stations in Canada

https://www.ctvnews.ca/canada/article/report-alleges-china-linked-to-at-least-18-overseas-police-...
3•Teever•10m ago•0 comments

China drafts lifetime ID codes for every robot it makes, not just humanoids

https://asia-tech-news.ghost.io/china-drafts-lifetime-id-codes-for-every-robot-it-makes-not-just-...
2•ilamont•11m ago•0 comments

Show HN: A framework for prototyping web games in 2D and 3D

https://github.com/kadhirvelm/resync-games-framework
1•kadhirvelm•12m ago•1 comments

You are protesting the wrong technology, people

https://hollisrobbinsanecdotal.substack.com/p/you-are-protesting-the-wrong-technology
2•HR01•13m ago•0 comments

Show HN: UK: Skip Royal Mail QR Code Queues with the Prince of Post

https://princeofpost.com
1•egamirorrim•14m ago•0 comments

Structify: AI apps built on a manufacturer's ERP data

https://www.structify.ai
1•alexreichenbach•15m ago•0 comments

Show HN: Bodylang – ask anything about your body and watch it happen in 3D

https://bodylang.vercel.app/
1•mantegna•16m ago•0 comments

Show HN: Digdeep.fyi – A DNS Debug Tool for DNSSEC, Mail, HTTP

https://digdeep.fyi/
2•oipart•18m ago•0 comments

The ESP32 S31 Runs Linux

https://www.i-programmer.info/news/91-hardware/19197-the-esp32-s31-runs-linux.html
2•teleforce•20m ago•0 comments

Straitjacket: A TypeScript template with Guardrails for your agents

https://github.com/balajeerc/straitjacket
1•hannofcart•24m ago•0 comments

Dave Winer's prototype for the web of Markdown

https://demo.bonbonweb.org/?url=https%3A%2F%2Fdave.writersweb.org%2Fscripting%2F2026%2F11%2F06.md
1•solomania9•24m ago•0 comments

FM-1: Things Are Happening with This Little Synth [video]

https://www.youtube.com/watch?v=hmYPh5CYtWw
1•alin23•25m ago•0 comments

Isn't It Time for AVIF Everywhere?

https://www.michaelponders.com/2026/11/isnt-it-time-for-avif-everywhere.html
3•speckx•30m ago•0 comments

Show HN: I mapped all known crypto scams

https://dontgetrekt.today/
1•marciob•30m ago•2 comments