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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!

Coding a Brick Tower

https://www.youtube.com/watch?v=DAMiS2PGTEE
1•dvrp•4m ago•0 comments

Show HN: Self-hostable academic paper manager (linxiv)

https://github.com/linxiv-dev/linXiv
1•jeuribe•4m ago•0 comments

Brain-computer interface trials are taking off

https://www.technologyreview.com/2026/06/19/1139270/brain-computer-interface-trials-are-taking-off/
1•joozio•11m ago•0 comments

Ask HN: Will we start seeing tools for LLM use?

1•bonigv•15m ago•1 comments

Federal regulators order grid operators speed power2energy-hungry AI datacenters

https://apnews.com/article/power-electricity-ai-plants-data-centers-grid-506e3d206871111f15c3c62f...
1•latentframe•21m ago•0 comments

Show HN: A Context Brain for You (and Your AI Agent)

https://gcontext.ai
1•bsampera•28m ago•0 comments

GitHub Copilot and Dev Productivity: An Observational Dose-Response Analysis

https://arxiv.org/abs/2606.00438
1•theanonymousone•29m ago•0 comments

Britain Learned and Unlearned Nuclear

https://worksinprogress.co/issue/how-the-uk-learned-and-unlearned-nuclear/
2•leonidasrup•31m ago•0 comments

Möbius Chess

https://mchess.io/v/m%C3%B6bius/
1•modinfo•32m ago•0 comments

Show HN: Passport Stamp Archive, browse real border stamps from around the world

https://ajin.im/is/building/stamps/
4•poppypetalmask•34m ago•0 comments

Doom Composer Bobby Prince Has Died

https://www.engadget.com/2198098/doom-composer-bobby-prince-has-died/
2•naves•38m ago•0 comments

Open source alternative to brain by perplexity

https://github.com/raphaelwkago-sketch/rudi
1•w4mwati•40m ago•0 comments

Show HN: Autonomy – Self-Harness/Self-Directed AI Agent Core Under Development

https://autonomy-landing-page.vercel.app/
1•agentic_vector•42m ago•0 comments

How R&D Affects Absorptive Capacity

https://camerongordon0.substack.com/p/how-r-and-d-affects-absorptive-capacity
1•iciac•47m ago•0 comments

How Does Bluetooth Work?

https://www.bbc.co.uk/programmes/w3ct8k71
3•vismit2000•55m ago•0 comments

Show HN: Pytest-tia – run only the tests your Git diff affects, with receipts

https://github.com/breadMSA/pytest-tia
2•BreadWasEaten•59m ago•0 comments

I created an open source app to check if a photo is from an AI or a Camera

https://github.com/Wavesonics/C2PAVerify
2•Wavesonics•1h ago•1 comments

Is It Possible to Block Childrens' Access to Social Media? [video]

https://www.youtube.com/watch?v=2jJeSgO_MGo
2•dev_hugepages•1h ago•0 comments

How Russian President Vladimir Putin plans to live forever

https://www.vox.com/podcasts/491360/vladimir-putin-live-forever-26-billion-cryo-pigs-longevity-guru
6•thunderbong•1h ago•1 comments

Ask HN: Using OPA/Rego to secure MCP tool execution. Does it make sense?

4•wmolino•1h ago•0 comments

Show HN: AI Voice Generator for Creators

https://speakora.io/
2•laimingj•1h ago•0 comments

I made SHORT SQUEEZE, a finance movie trailer created with AI

https://www.instagram.com/reel/DZy5nOKN7Pz/
2•pyipeng•1h ago•0 comments

Mastodon 4.6 Released

https://lwn.net/Articles/1078466/
4•daesorin•1h ago•0 comments

Voxtral Realtime WebGPU – A Hugging Face Space by Mistralai

https://huggingface.co/spaces/mistralai/Voxtral-Realtime-WebGPU
2•fagnerbrack•1h ago•0 comments

Release 4.0.0 · HuggingFace/Transformers.js

https://github.com/huggingface/transformers.js/releases/tag/4.0.0
2•fagnerbrack•1h ago•0 comments

Big tech engineers need big egos

https://www.seangoedecke.com/big-tech-needs-big-egos/
4•fagnerbrack•1h ago•0 comments

Lisp in the Rust Type System

https://github.com/playX18/lisp-in-types/
4•quasigloam•1h ago•0 comments

Bevy 0.19

https://bevy.org/news/bevy-0-19/
4•paavohtl•1h ago•0 comments

Before SpaceX IPO, Investors in China Acquired Stakes

https://www.propublica.org/article/spacex-elon-musk-ipo-foreign-investors-china
5•ilreb•1h ago•0 comments

I Stored a Website in a Favicon

https://www.timwehrle.de/blog/i-stored-a-website-in-a-favicon/
55•theanonymousone•1h ago•19 comments