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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•8mo 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!

Ask HN: Vibe Researching" with AI – Anyone Using It for Real?

1•spenceXu•49s ago•0 comments

ArticleCast – Turn Articles and PDFs into AI Podcasts

https://www.articlecast.ai
1•imomoh•1m ago•0 comments

Programming Sucks (2014)

https://www.stilldrinking.org/programming-sucks
1•fragmede•2m ago•0 comments

Moondala – Social commerce where users earn from referrals, not ads

https://moondala.one/r/2S7B6R
1•HamoodBahzar•8m ago•1 comments

Moltbot Security Guide: Protect Your VPS from Hackers and Vulnerabilities

https://veerhost.com/moltbot-security-guide/
3•aymanaljunaid•10m ago•0 comments

Ycyvw23hoUg Jh

1•BONL•13m ago•1 comments

HetGPU: The pursuit of making binary compatibility towards GPUs

https://arxiv.org/abs/2506.15993
1•adgnaf•14m ago•1 comments

Ask HN: Do you verify AI-generated content before publishing?

1•kumathpratik•18m ago•0 comments

Teleology

https://en.wikipedia.org/wiki/Teleology
2•downboots•19m ago•0 comments

Minnesota Proved MAGA Wrong

https://www.theatlantic.com/ideas/2026/01/the-neighbors-defending-minnesota-from-ice/685769/
2•mitchbob•19m ago•4 comments

Decoded: GNU Coreutils (2019)

https://www.maizure.org/projects/decoded-gnu-coreutils/
3•Ariarule•21m ago•0 comments

The novelist who took on the Italian mafia – and lived to tell the tale

https://www.thetimes.com/culture/books/article/sicilian-man-leonardo-sciascia-rise-mafia-struggle...
3•Thevet•22m ago•0 comments

AI Coloring Pages Generator

https://aicoloringpage.org/
3•Evan233•26m ago•0 comments

I built a Cursor for writers" on a $7 budget using Groq and Llama 3

2•minotauris•27m ago•2 comments

AI discovers 12 of 12 OpenSSL zero-days (while curl cancelled its bug bounty)

https://www.lesswrong.com/posts/7aJwgbMEiKq5egQbd/ai-found-12-of-12-openssl-zero-days-while-curl-...
1•excited-dev-11•27m ago•0 comments

Use FinTinAI to Master Your Financial Future

https://fintinai.com
1•Xmire•27m ago•1 comments

I built hidden emotion detection application

https://subtlesense.lovable.app
3•naiyya_thapa•28m ago•0 comments

A "Pure Go" Linux Environment, Ported by Claude

https://www.jtolio.com/2026/01/tinyemu-go/
1•varunramesh•28m ago•0 comments

Claude Code and Executive Function

https://til.andrew-quinn.me/posts/claude-code-and-executive-function/
1•hiAndrewQuinn•29m ago•0 comments

The Rise, Fall, and Rebirth of Clawdbot in 72 Hours

https://www.everydev.ai/p/the-rise-fall-and-rebirth-of-clawdbot-in-72-hours
4•devhouse•29m ago•0 comments

How the new era of CEO supervillains are trapped in their own ideology

https://statmodeling.stat.columbia.edu/2026/01/27/facebook-and-the-inherent-incoherence-of-the-id...
2•mandevil•33m ago•0 comments

What happened to the technical drawings of old and obsolete vehicles, machines?

https://old.reddit.com/r/AskEngineers/comments/1af8muv/what_happened_to_the_blueprintstechnical_d...
2•num42•36m ago•1 comments

Show HN: A browser-only image processing pipeline inspired by macOS Automator

https://picturekit.app/en
1•margox•36m ago•0 comments

Boston – MIT grad, Polaroid engineer's basement band side hustle

https://www.youtube.com/watch?v=OYyaKZ2aiiU
1•burnt-resistor•40m ago•0 comments

Show HN: WordRE, Wordle for Real Estate

https://reidsherman.com/wordre/
1•reidjs•40m ago•0 comments

SQLite in Production? Not So Fast for Complex Queries

https://yyhh.org/blog/2026/01/sqlite-in-production-not-so-fast-for-complex-queries/
1•huahaiy•41m ago•0 comments

Amazon accidentally sends email confirming layoffs

https://www.bbc.com/news/articles/cx2ywzxlxnlo
3•sixhobbits•42m ago•0 comments

What Machines Want

http://www.miskatonian.com/2026/01/26/do-machines-have-desires-a-philosophical-critique-of-the-ai...
2•bm3719•45m ago•0 comments

Trust them, don't trust it

https://bfswa.substack.com/p/trust-them-dont-trust-it
2•zdw•49m ago•0 comments

The Indian Work Culture – Masochistic, Poor, Intense and Fragile

https://grajmanu.wordpress.com/2020/11/01/indian-work-culture/
3•grajmanu•51m ago•0 comments