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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!

The Day of Small Things

https://robinrendle.com/notes/the-day-of-small-things/
1•herbertl•54s ago•0 comments

Paperditor – a free, open-source WYSIWYG Markdown editor

https://github.com/guisaldanha/paperditor/
1•guisaldanha•4m ago•0 comments

Minimally Invasive Education

https://en.wikipedia.org/wiki/Minimally_invasive_education
1•thunderbong•4m ago•0 comments

Lego Space Hubble Telescope

https://ideas.lego.com/product-ideas/cf7b0374-c853-4b6f-98c6-66b8ef7fcdaf
1•tcp_handshaker•5m ago•0 comments

Ctok: Reconstructed Claude Tokenizer

https://github.com/sanderland/ctok
1•krackers•5m ago•0 comments

LLMs anticipate verbal behavior from studying longitudinal conversations

https://arxiv.org/abs/2608.13454
1•anigbrowl•6m ago•1 comments

Hurricane Hits Big Island, Hawaii

https://www.nhc.noaa.gov/#Lala
1•saisrirampur•7m ago•0 comments

Concurrent Servers in Rust

https://eli.thegreenplace.net/2026/concurrent-servers-part-7-rust/
1•ingve•7m ago•0 comments

Can an LLM price a World Cup match better than the market (and make money)?

https://christian.bock.bio/posts/frontier_xg_worldcup/
2•cbock90•12m ago•0 comments

Show HN: Seedle, daily -dle for Minecraft seeds

https://seedle.loch.tools/
1•lwansbrough•14m ago•0 comments

An Astronaut Saw a Russian Missile [..] Then She Went Where It Landed

https://united24media.com/war-in-ukraine/an-astronaut-saw-a-russian-missile-head-for-ukraine-from...
1•defly•15m ago•0 comments

Meta will train its AI on Newsmax, a far-right media outlet

https://popular.info/p/meta-will-train-its-ai-on-far-right
3•Fellw•15m ago•1 comments

Secondhand booksellers in UK and Ireland suspect AI firms 'strange' bulk orders

https://www.theguardian.com/technology/2026/aug/15/uk-ireland-booksellers-suspect-ai-companies-bu...
1•heisenbit•16m ago•0 comments

Supply-chain controls matter more when agents install your dependencies

https://omniline.app/blog/supply-chain-controls-matter-more-when-agents-install-your-dependencies
1•libertas_quae_s•18m ago•0 comments

How Ozempic Destroyed Fat Positivity [video]

https://www.youtube.com/watch?v=LbZ31_60z3M
2•znpy•18m ago•0 comments

US hires over 2k 'best and brightest' video gamers as air traffic controllers

https://www.the-express.com/news/world-news/213828/us-hires-over-2-000-video-gamers-air-traffic-c...
2•speckx•19m ago•0 comments

Remembering the pre-Google web, when search was an experiment

https://arstechnica.com/gadgets/2026/08/remembering-the-pre-google-web-when-search-was-an-experim...
1•ohjeez•21m ago•0 comments

Kimi Work attaches raw agent sessions to feedback reports

3•ryanmerket•25m ago•0 comments

See how an H100 works in 3D with threejs

https://gpu.kylejeong.com/
1•Kylejeong21•25m ago•0 comments

What on Earth is Google doing?

https://www.digitaldigging.org/p/how-to-plant-a-nuclear-plant-in-iran
2•strogonoff•27m ago•0 comments

ESPConnect

https://github.com/thelastoutpostworkshop/ESPConnect
2•skibz•30m ago•0 comments

Antitrust: The Monster Case (1975, IBM)

https://time.com/archive/6846827/antitrust-the-monster-case/
1•asawfofor•30m ago•0 comments

The New Bottlenecks After Coding

https://robotpaper.ai/the-new-bottlenecks-after-coding/
1•royosherove•31m ago•0 comments

The teenagers who wired Romania [audio]

https://www.bbc.com/audio/play/p0p2vc20
2•alibarber•36m ago•0 comments

Magnus Carlsen Retains Chess Esports World Cup Title

https://www.chess.com/news/view/magnus-carlsen-wins-2026-esports-world-cup
2•speckx•36m ago•0 comments

Show HN: Stay connected across Africa, from landing to Safari

https://safariesim.com/
2•not_wowinter13•40m ago•0 comments

Why tech bosses keep sharing their manifestos about AI

https://www.bbc.com/news/articles/cz97ljy91zxo
4•tcp_handshaker•45m ago•1 comments

Israeli PR wants to answer your ChatGPT questions

https://www.politico.com/newsletters/politico-influence/2026/08/14/israeli-pr-wants-to-answer-you...
6•computerliker•49m ago•0 comments

Short Memory

https://www.deer.psu.edu/short-memory/
2•lumpa•52m ago•0 comments

Deadly forgotten tornado was worst in state history

https://www.offbeatoregon.com/2412e.long-creek-bomb-cyclone_682.511.html
4•joebig•52m ago•3 comments