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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!

Live scanner that detects antidetect browsers like Kameleo

https://sntlhq.com
1•kaspartomson•1m ago•0 comments

The Boeing 747 Begins Its Final Descent

https://www.theatlantic.com/magazine/2026/07/boeing-747-retirement/687304/
1•Brajeshwar•2m ago•0 comments

Show HN: Hyperpost – Reference Implementation of a Website

https://github.com/AlessandroTambellini/hyperpost
1•ale_tambellini•2m ago•0 comments

Why the NATO Logo Is One of the Most Recognizable Symbols in the World

https://detroitchinatown.org/why-the-nato-logo-is-one-of-the-most-recognizable-symbols-in-the-world/
1•Alifatisk•2m ago•0 comments

How to Build a Google Sheets API Integration with Nango and Codex

https://nango.dev/blog/how-to-build-a-google-sheets-api-integration-with-nango-and-codex/
1•sapneshnaik•3m ago•0 comments

Where Did Earth Get Its Oceans? Maybe It Made Them Itself

https://www.quantamagazine.org/where-did-earth-get-its-oceans-maybe-it-made-them-itself-20260612/
1•ibobev•4m ago•0 comments

C64IDE: Powerful, Free Mac Commodore 64 IDE Review

https://retrogamecoders.com/c64ide-review/
1•ibobev•4m ago•0 comments

You can power on a Mac remotely

https://www.jeffgeerling.com/blog/2026/power-on-your-mac-remotely/
1•speckx•5m ago•0 comments

After empty promises, string theory finds new uses

https://www.science.org/content/article/after-empty-promises-string-theory-finds-new-uses
1•the-mitr•5m ago•0 comments

Second Circuit Rejects Sam Bankman-Fried's Appeal

https://www.citationneeded.news/second-circuit-rejects-sam-bankman-frieds-appeal/
2•cdrnsf•6m ago•0 comments

Show HN: VibeClip – open-source AI video editor you control by chatting

https://github.com/oktaydbk54/vibeclip
1•borandabak•6m ago•0 comments

In the Atacama Desert, astronomers live and work in a James Bond villain lair

https://www.bbc.com/future/article/20260609-inside-the-bond-set-where-astronomers-live
1•bookofjoe•6m ago•1 comments

Review of Synthetic Users Finds Synthetic Users Don't Work

https://www.thevoiceofuser.com/the-largest-review-of-synthetic-participants-ever-conducted-found-...
1•cdrnsf•8m ago•0 comments

Wasi: WebGPU – A Proposed WebAssembly System Interface API

https://github.com/WebAssembly/wasi-webgpu
2•giancarlostoro•10m ago•0 comments

Show HN: StackScope – I crawled over 40k indie launches to see what they ship

https://stackscope.dev/
1•datafreak_•11m ago•0 comments

HN Comment Golf

1•dijksterhuis•12m ago•2 comments

Fluxor: A zero-dependency PHP framework with file-based routing

https://github.com/lizzyman04/fluxor
1•lizzyman04•13m ago•0 comments

Elon Musk Is Colonizing Earth

https://www.nytimes.com/2026/06/12/opinion/elon-musk-spacex-starbase-texas.html
2•dieselgate•14m ago•0 comments

Anthropic's Fable is the most locked-down public model we've ever seen

https://www.understandingai.org/p/anthropics-fable-is-the-most-locked
2•speckx•15m ago•0 comments

The Roblox Problem

https://bxwrites.substack.com/p/the-roblox-problem
1•bushwart•18m ago•0 comments

Swamp Is Interesting Because It Doesn't Trust AI

https://ravegraph.beehiiv.com/p/swamp-is-interesting-because-it-doesn-t-trust-ai
1•nickstinemates•18m ago•0 comments

Adding ext3/4 compliant journaling to the 30-year-old GNU Hurd microkernel

https://github.com/mnikic/hurd-journaling
1•backend_dev82•20m ago•1 comments

Show HN: World Cup bracket game with no back end – brackets live in the URL

https://golazo.giitaayan.com
1•fellowplayer•20m ago•0 comments

Show HN: A Terrible Way to Consume Hacker News – AI Slop

https://deadinternet.tech/feed
3•keegandonley•20m ago•0 comments

500M Subscriber Livestream [video]

https://www.youtube.com/watch?v=A9TikdsD5eg
1•Cider9986•21m ago•0 comments

CRISPR Tech Selectively Shreds Cancer Cells, Including "Undruggable" Cancers

https://innovativegenomics.org/news/crispr-technique-selectively-shreds-cancer-cells/
1•gmays•21m ago•0 comments

Commits

https://shub.club/writings/2026/june/commits/
1•forthwall•21m ago•0 comments

American Ebola Unit Sparks Fury, Protests and a Political Crisis in Kenya

https://www.nytimes.com/2026/06/10/world/africa/ebola-kenya-us-protests.html
1•ViktorRay•23m ago•0 comments

Tesla, SpaceX, and xAI are launching the most epic chip-building effort

https://terafab.ai/
2•binyu•23m ago•0 comments

Enshittification of Policing

https://www.christopherburg.com/blog/enshittification-of-policing/
7•speckx•23m ago•0 comments