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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 Predictor in the Room

https://substack.com/@valewen/p-188912694
1•hiramwen•1m ago•0 comments

Show HN: How to Mentally Calculate the Day of the Week for Any Date

https://tinkerandsee.com/weekday/
1•yang140•2m ago•0 comments

Hugging Face exploring sale valuing it at $13B, Business Insider says

https://finance.yahoo.com/technology/ai/articles/hugging-face-exploring-sale-valuing-200012818.html
1•AbstractH24•2m ago•1 comments

Will the DOJ's investigation into A16Z spook other VCs?

https://techcrunch.com/2026/08/22/will-the-dojs-investigation-into-a16z-spook-other-vcs/
2•rbanffy•3m ago•0 comments

Postgres 19: How Our Advice Has Changed Since We Wrote It

https://www.crunchydata.com/blog/postgres-19-how-our-advice-has-changed-since-we-wrote-it
1•craigkerstiens•3m ago•0 comments

Show HN: Gemini models are getting better – we can prove it

https://github.com/awesoftsolutions/google_gemini_flash_comparison
1•favurdev•3m ago•0 comments

Letsplay

https://jeopardylabs.com/play/expectations-jeopardy-
1•gydeonhall•5m ago•0 comments

Here's Where Our Memories Go as We Age

https://nautil.us/heres-where-our-memories-go-as-we-age-1284123
2•Brajeshwar•5m ago•0 comments

How an LLM Serves a Request

https://mapathak-commits.github.io/inference-wall/articles/primer/
1•sudomax•5m ago•0 comments

A Human for Your AI

https://yourhuman.ai/
1•sanj•5m ago•0 comments

Hugging Face looking to sell for at least $13B

https://www.businessinsider.com/hugging-face-could-be-acquired-13-billion-2026-8
2•gk1•6m ago•0 comments

Show HN: Tblue – 614 passive security scanners for any website, runs locally

https://github.com/taylannuhogluofficial-png/Tblue
2•taylannuhoglu•6m ago•0 comments

AliExpress Silent WebAudio Fingerprinting Uses Bluetooth Hardware

https://beyondmachines.net/event_details/aliexpress-silent-webaudio-fingerprinting-uses-bluetooth...
1•MBCook•7m ago•0 comments

Show HN: TestOptim AI – AI QA testing that finds and files issues automatically

https://www.testoptim.com
1•shahidhelalkhan•7m ago•0 comments

Release Nvim 0.12.5

https://github.com/neovim/neovim/releases/tag/v0.12.5
1•DemiGuru•8m ago•0 comments

Show HN: HN Notify – Subscribe to HN replies, users, keywords, and domains

https://hnnotify.org/
1•jermaustin1•9m ago•0 comments

Walgit – a Git server that is one binary in front of an object store

https://github.com/tobi/walgit
1•matallo•9m ago•0 comments

Hot Chips 2026: Applying High Bandwidth Flash (HBF)

https://chipsandcheese.com/p/hot-chips-2026-applying-high-bandwidth
2•ksec•10m ago•0 comments

Show HN: AgentIn, a professional network for coding agents

https://agentin.work/
1•TimCTRL•10m ago•0 comments

Show HN: Unifly is a UniFi CLI for humans and agents

https://github.com/hyperb1iss/unifly
1•hyperb1iss•11m ago•0 comments

Chrome extension that groups tabs by site automatically

https://github.com/akiraysh/chrome-tab-grouper
1•akiraysh09•12m ago•0 comments

Codefloe Is a Professionally Hosted Public Git Forge

https://codefloe.com/
2•jeremyjh•13m ago•0 comments

How to **** ** a Data Center [video]

https://www.youtube.com/watch?v=bVYmNJGjFnI
2•rglover•13m ago•0 comments

Running AI agents non-interactively in CI and scripts

https://octomind.run/blog/octomind-non-interactive-ci-automation
1•donk8r•14m ago•0 comments

AI Is Ruining Scholarship

https://www.chronicle.com/article/ai-is-ruining-scholarship
2•speckx•14m ago•0 comments

Peppermint oil reduces blood pressure by 8.48 mmHg in small study

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0344538
1•brandonb•14m ago•0 comments

Show HN: Galaxium, an experimental WebGPU space explorer

https://galaxium.app
1•guillaumec•15m ago•1 comments

Character Input

https://www.practicepython.org/exercise/2014/01/29/01-character-input.html
1•mahourkasraei•15m ago•0 comments

Skipping with OhmJS

https://programmingsimplicity.substack.com/p/skipping-with-ohmjs
1•surprisetalk•19m ago•0 comments

FDA places clinical hold on Regenxbio's gene therapy for Hunter Syndrome

https://www.reuters.com/business/healthcare-pharmaceuticals/fda-places-clinical-hold-regenxbios-g...
1•randycupertino•19m ago•1 comments