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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!

Trump phone is made in Taiwan [video]

https://www.youtube.com/watch?v=5O-vCJW1b8g
1•senti_sentient•1m ago•0 comments

Show HN: Wishcode: Post an idea you wish existed

https://wishcode-ai.vercel.app
1•build_with_ragh•1m ago•0 comments

Show HN: A malleable and formally verified Web engine

3•polyglotfacto•6m ago•0 comments

Bernstein – open-source governance layer for AI agents

https://bernstein.run
2•ankitg12•9m ago•0 comments

Show HN: I've logged my time every day since 2024, so I built an app for it

https://www.fluxtime.io/
1•dny402612141•14m ago•0 comments

We Won't "Just Hang Out"

https://borretti.me/article/we-wont-just-hang-out
3•barry-cotter•14m ago•1 comments

Hackers identify ICE employees in data breach

https://www.washingtonpost.com/immigration/2026/10/28/ice-cbp-other-dhs-officer-identities-posted...
1•ternaryoperator•15m ago•0 comments

Getting good at AI takes time and practice

https://www.seangoedecke.com/getting-good-at-ai-takes-time-and-practice/
5•gpi•17m ago•0 comments

Ask HN: I Need Advice

3•TuxedoBuddy•17m ago•2 comments

Concise/readable versions of OpenAI math dump

https://github.com/qpwo/ezmath2
2•lhmiles•20m ago•1 comments

What about Hyperpolitics

https://www.diggitmagazine.com/what-about-hyperpolitics
1•AntonioBarthes•22m ago•0 comments

Total Recall: The Woman Who Can't Forget

https://www.wired.com/2009/03/ff-perfectmemory/
1•jacquesm•24m ago•0 comments

The Limit of Extraction: Why Behavioral Data Is Not Equivalent to Expertise

https://medium.com/@smoking2man/the-limit-of-extraction-why-behavioral-data-is-not-equivalent-to-...
1•Aldus551•27m ago•0 comments

The upvote dilemma

https://herman.bearblog.dev/the-upvote-dilemma/
2•BrunoBernardino•29m ago•0 comments

Google Home Speakers downloading massive amounts of data

https://9to5google.com/2026/10/19/google-home-speaker-downloads/
1•the-mitr•30m ago•0 comments

Grocery stores are great abstractions

https://www.holm.dog/2026/10/grocery-stores-are-great-abstractions.html
1•friendshaver•37m ago•0 comments

Outcry after Call of Duty maker uses real footage of deadly Seoul crowd crush

https://www.theguardian.com/world/2026/oct/29/call-of-duty-seoul-crowd-crush-video-footage
1•Markoff•39m ago•0 comments

Smart reports, surveys, and pooled group budgets for Claude Enterprise

https://claude.com/resources/articles/smart-reports-surveys-pooled-budgets
1•clhodapp•39m ago•0 comments

Show HN: iCloud Drive Client for Linux, in Rust

https://github.com/taylorhayis/icloud-drive-for-linux
1•RufusJacksons•42m ago•0 comments

Show HN: Uji – Gentoo of Coding Agents

https://github.com/uji-labs/uji
4•cat-whisperer•42m ago•0 comments

Can AI agents do senior expert work? What the evidence says

https://estimandlab.com/insights/can-ai-agents-do-senior-expert-work/
1•spozveh•46m ago•0 comments

GeForce vs. Workstation GPUs: Nvidia's Half Rate, Priced

https://www.airealist.ai/p/nvidia-geforce-half-rate
2•julsimon•47m ago•0 comments

DockFrame is now live on CrowdSupply

https://www.crowdsupply.com/hw-media-lab/dockframe
1•hwlab•48m ago•0 comments

I tried to break a quantum computer (sort of)

https://medium.com/@jkim_tran/i-tried-to-break-a-quantum-computer-sort-of-d053602ae3fb
1•jennifer-trin•53m ago•0 comments

Show HN: A Cursor-like workspace for your LaTeX papers

https://github.com/cu1ch3n/papilot
1•cuichen•54m ago•0 comments

Beauty Is Everywhere. But What Is It For?

https://thereader.mitpress.mit.edu/beauty-is-everywhere-but-what-is-it-for/
1•prismatic•58m ago•1 comments

Tech Giants Ramp Up Resistance to ICE in Bid to Avoid Democratic Scrutiny

https://www.wsj.com/politics/policy/google-meta-ice-midterms-e6f2a6c4
2•JumpCrisscross•1h ago•2 comments

Guake Terminal

https://guake.github.io/
1•ankitg12•1h ago•1 comments

Show HN: Fabivo – Furniture design from a photo to a numbered cut list

https://www.fabivo.app/en
1•superpapotas•1h ago•0 comments

ArXiv is moving its database to cloud storage

https://blog.arxiv.org/2026/10/21/scheduled-database-maintenance/
1•anticensor•1h ago•0 comments