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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!

Notes Toward a New Romanticism: Or why it's 1800 all over again

https://www.honest-broker.com/p/notes-toward-a-new-romanticism
1•plastic-enjoyer•3m ago•0 comments

Learning from experience instead of curated datasets

https://oaklab.ai/posts/learning-from-experience-instead-of-curated-datasets
1•whalee•4m ago•0 comments

Choice Notes on History from Notes and Queries (1858)

https://publicdomainreview.org/collection/choice-notes-from-notes-and-queries/
1•pepys•5m ago•0 comments

Show HN: I built a site to see what politicians are beating S&P 500

https://politicianstocktracker.com/
1•wbemaker•9m ago•0 comments

Debian Bookworm v12.15 Released

https://www.debian.org/News/2026/2026071102
1•saikatsg•11m ago•0 comments

Show HN: ClaudeThings – your AI engineering and marketing team in one command

https://www.claudethings.com/
1•mohitvaswani•13m ago•0 comments

Show HN: Free color tools that run entirely in the browser (no sign-up)

https://colorpicker.cx
2•djerek•14m ago•1 comments

MicroVM sandbox on Win, Mac, Linux, with policy engine

https://docs.docker.com/ai/sandboxes
1•pploug•16m ago•0 comments

OpenAI Added 1M Users in a Day. Fable Is Still in Limbo

https://www.vincentschmalbach.com/codex-million-users-fable-limbo/
2•vincent_s•17m ago•0 comments

Slay the Spire 2 Is Choosing "Shit" Art over Generative AI

https://www.gamespot.com/articles/slay-the-spire-2-is-choosing-shit-art-over-generative-ai/
2•jalev•22m ago•1 comments

Autoresearch doubled GLM-5.2 throughput. Production traffic broke it

https://fparisio.substack.com/p/an-ai-agent-cold-tuned-our-glm-52
2•Leonerd•23m ago•0 comments

Trump admin and industry groups discuss streamlining releases of US open models

https://www.washingtonpost.com/wp-intelligence/ai-tech-brief/2026/07/13/ai-tech-brief-exclusive-a...
1•thoughtpeddler•23m ago•1 comments

Hermes Agent maker Nous Research in talks for new funding at $1.5B valuation

https://techcrunch.com/2026/07/13/hermes-agent-maker-nous-research-in-talks-for-new-funding-at-1-...
1•thoughtpeddler•25m ago•0 comments

Starship's Thirteenth Flight Test

https://www.spacex.com/launches/starship-flight-13
1•pantalaimon•29m ago•0 comments

Jurassic Park computers in excruciating detail

https://fabiensanglard.net/jurrasic_park_computers/index.html
1•rcarmo•29m ago•0 comments

I auto-configure my reverse proxy and uptime monitoring using DNS-DS

https://rogena.me/posts/2026-07-12-running-my-home-lab-using-dns-sd/
1•jasonrogena•35m ago•0 comments

Show HN: ZenStack – access control at the ORM layer, built for coding agents

https://zenstack.framer.website/
2•carlual•37m ago•0 comments

The Anatomy of an Instruction Pipeline Hazard

https://hiraditya.github.io/posts/hardware-hazards-b200/
2•somnial•39m ago•0 comments

Ask HN: Why has Wikipedia become evil?

5•roschdal•39m ago•3 comments

What Anthropic's latest AI discovery does–and doesn't–show

https://www.technologyreview.com/2026/07/13/1140343/what-anthropics-latest-ai-discovery-does-and-...
1•joozio•44m ago•0 comments

Show HN: A FPV Lego car, controlled in Rust

https://dystroy.org/blog/picamobile/
1•dystroy•47m ago•1 comments

Patent for Electric Motor Platform Without Rare-Earth Minerals

https://auto.economictimes.indiatimes.com/news/auto-technology/
1•0xkistu•48m ago•1 comments

Helicone allows users to write SQL directly to a shared ClickHouse

https://www.justintorre.com/blogs/clickhouse-rls-query-parameters
1•justintorre75•54m ago•0 comments

Show HN: Benchmark your eng team's AI agent maturity in 5 minutes

https://agent-benchmarks.com/software-factory/
2•adamgold7•57m ago•0 comments

The Lies They're Telling Towns and Tribes About the Benefits of AI Data Centers

https://karlbode.com/the-lies-theyre-telling-towns-and-tribes-about-the-benefits-of-ai-data-centers/
1•HotGarbage•57m ago•0 comments

Show HN: I built a small transcription tool for non-English videos

https://transcrevervideo.com
1•Yummiy•57m ago•1 comments

Indian scientists produce most detailed 3D atlas of the human brainstem

https://www.bbc.com/news/articles/cg53l737v1qo
2•BaudouinVH•1h ago•0 comments

Why frontier labs are scaling-pilled

https://invertedpassion.substack.com/p/why-frontier-labs-are-scaling-pilled
1•paraschopra•1h ago•0 comments

There's an Ancient Solution to Our Modern Crisis of Attention

https://www.nytimes.com/2026/07/12/opinion/attention-crisis-seneca.html
1•thelastgallon•1h ago•0 comments

Netflix accidentally shipped a Claude.md file

https://www.reddit.com/r/AgentsOfAI/s/GYaEDTim0U
2•Ozzie_osman•1h ago•1 comments