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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!

Bertlmann's Socks and the Nature of Reality

https://physicsdetective.com/bertlmanns-socks-and-the-nature-of-reality/
1•jruohonen•1m ago•0 comments

A tiny (18KB for rpi zero)easy to read file listing tool. rust no_std and Libc

https://github.com/tracyspacy/fli
2•yulkor•1m ago•0 comments

Show HN: Didon – AI workday reports for productivity analysis

https://www.didon.app/
1•babakzy•4m ago•0 comments

Dialog Society: Ezra Klein Comments

https://twitter.com/ezraklein/status/2068479476309151771
1•u1hcw9nx•6m ago•1 comments

Highly sensitive radio telescope array to be built in Nevada desert

https://www.nbcnews.com/science/space/radio-telescope-array-nevada-desert-rcna350710
1•jonbaer•8m ago•0 comments

Agile Is a Scourge on the Planet

https://unacceptable.nl/posts/on-agile/
1•zwckl•8m ago•0 comments

We Do Not Build for Humans

https://www.agentmail.to/blog/we-do-not-build-for-humans
1•kiyanwang•10m ago•0 comments

KitaabAI AI book and thesis writer with native Urdu support

https://kitaabai.com
1•darweshpk•11m ago•0 comments

Show HN: ReplyVoice <> global floating button for Android voice dictation

https://replyvoice.com
1•kedimuzafer•15m ago•0 comments

Brands using AI-generated influencers to promote products on social media

https://www.theguardian.com/technology/2026/jun/21/brands-using-ai-generated-influencers-to-promo...
2•pseudolus•20m ago•0 comments

Use Faker to improve the quality of your tests

https://howtotestfrontend.com/resources/why-you-should-use-faker
1•howToTestFE•25m ago•0 comments

The Grammar of Coding Agents

https://grammar-of-coding-agents.pages.dev
2•allenb•34m ago•1 comments

The Web Is for People

https://www.torgo.com/blog/2026/06/the-web-is-for-people.html
2•robin_reala•37m ago•0 comments

Dr. Erna Shneider Hoover Revolutionized Telecommunications [pdf]

https://ulopenaccess.com/papers/ULAHU_V03I02/ULAHU20260302_004.pdf
1•Tomte•38m ago•0 comments

China unveils a portable anti-drone laser that can down drones from 1,600ft away

https://www.tomshardware.com/tech-industry/china-shows-off-a-backpack-sized-anti-drone-laser-that...
2•giuliomagnifico•41m ago•0 comments

Kalman Filter

https://en.wikipedia.org/wiki/Kalman_filter
2•1e1a•41m ago•0 comments

MCP server that lets Claude click menus on your Mac and fix its own mistakes

https://github.com/m0rvayne/mcp-osascript
1•m0rvayne•43m ago•0 comments

Softmax-free ~354M: tile-skip kernels for long-context VRAM savings (sparse)

https://huggingface.co/Tripstoph/RRT-Foundation
1•Tripstoph•44m ago•0 comments

The unreasonable effectiveness of LLMs for auditing Rust code

https://shnatsel.medium.com/the-unreasonable-effectiveness-of-llms-for-auditing-rust-code-d4df8bf...
1•heinrich5991•44m ago•0 comments

Bell.com

https://bell.com
1•tentacleuno•53m ago•0 comments

CTOs Agree: Cognitive Debt Is the New Technical Debt

https://shiftmag.dev/ctos-agree-cognitive-debt-is-the-new-technical-debt-10229/
11•sxx0•57m ago•2 comments

Sword Swallowing and Its Side Effects

https://pmc.ncbi.nlm.nih.gov/articles/PMC1761150/
2•nephihaha•59m ago•0 comments

What does it mean for AI to be democratic?

https://blog.andymasley.com/p/what-does-it-mean-for-ai-to-be-democratic
1•jger15•59m ago•0 comments

Hidden Tunnels Dating Back to Henry VIII's Reign Discovered at Boarding School

https://www.smithsonianmag.com/smart-news/hidden-tunnels-dating-back-to-henry-viiis-reign-were-di...
1•bookofjoe•1h ago•0 comments

POSBox – Free Open Source Point of Sale System

https://github.com/train2128/POSBox---Point-of-Sale-System
1•train212•1h ago•0 comments

NSA director: 'Mythos "broke into almost all of our classified systems in hours"

https://www.economist.com/briefing/2026/06/14/donald-trumps-blocking-of-anthropic-is-capricious-a...
15•ricksunny•1h ago•13 comments

Building a Swarm of Telescopes to Find Life

https://www.universetoday.com/articles/astronomers-want-to-build-a-swarm-of-telescopes-to-find-life
1•tcp_handshaker•1h ago•0 comments

What the Wounds Are Telling Us (2025)

https://www.volkskrant.nl/kijkverder/v/2025/gunshot-palestine-children-israel-war~v1819649/
1•tcp_handshaker•1h ago•0 comments

Geo-engineering to protect against solar storms

https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2025SW004846
2•dylancollins•1h ago•1 comments

Survival Ball

https://survivalball.com/
1•lopespm•1h ago•0 comments