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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!

What good requirements look like (and how to write them)

https://projan.ai/blog/what-good-requirements-look-like-and-how-to-write-them
1•davec271•2m ago•0 comments

Show HN: A voice layer over my whole computer: shell, agents, mouse, keyboard

https://github.com/PersonalJarvis/PersonalJarvis
2•PersonalJarvis•2m ago•0 comments

How hot has the European summer been? 22 cities of 42 beat records

https://thelongswell.com/heat/
1•jkaljundi•3m ago•0 comments

Bitbucket CLI

2•scr2em•3m ago•0 comments

LLM Is Not a PDF Parser: Use OpenDataLoader First

https://x.com/opendatalo51205
1•smartdev01•3m ago•1 comments

FDA Admitted in Print That Nothing It Knows of Will Wash Cyclospora Off Lettuce

https://www.marlerblog.com/case-news/fda-just-admitted-in-print-that-nothing-it-knows-of-will-was...
1•speckx•4m ago•0 comments

I hate packaging my software for Linux

https://getfresh.dev/docs/blog/packaging-for-linux/
1•_sinelaw_•4m ago•0 comments

Putting away the tools of his trade for good

https://www.ahwatukee.com/business/putting-away-the-tools-of-his-trade-for-good/article_14b2a9b1-...
1•spking•5m ago•0 comments

Nemotron-3.5-lightning-30B-a3B Model by Nvidia for use on 1 GPU

https://build.nvidia.com/nvidia/nemotron-3.5-lightning-30b-a3b
1•janandonly•8m ago•0 comments

uBlock Origin Is Giving Up the Fight to Keep Ads Off Facebook

https://digitalescapetools.com/2026/08/ublock-origin-stops-chasing-facebook-ads.html
2•Markoff•10m ago•0 comments

Regarding the Anthropic and Watermark Issue

https://twitter.com/kimmonismus/status/2087475010050920549
3•fwsgonzo•16m ago•0 comments

Electric is joining team Neon at Databricks

https://neon.com/blog/electric-joins-neon
2•mariuz•17m ago•0 comments

The Freaky, Tentacled 'Alien' Bait Turning American Fishing Upside Down

https://www.wsj.com/sports/the-freaky-tentacled-alien-bait-turning-american-fishing-upside-down-0...
2•_tk_•20m ago•0 comments

(ADVANCED) Guide to not fucking up QR codes

https://infosec.exchange/@rebane2001/117078420917152774
3•upofadown•23m ago•2 comments

Hybrid-retrieval memory layer for AI agents

https://github.com/deepmemteam/deepmem
2•qikouki•23m ago•0 comments

Coolify 4.3.0

https://github.com/coollabsio/coolify/releases/tag/v4.3.0
2•theanonymousone•24m ago•0 comments

Delphi 13 Community Edition Is Now Available

https://blogs.embarcadero.com/delphi-13-community-edition-is-now-available/
2•layer8•25m ago•0 comments

Aurweb v6.5.0 Deployed

https://lists.archlinux.org/archives/list/aur-general@lists.archlinux.org/thread/P5C7GZ4C3OJIH4EX...
2•NoboruWataya•25m ago•0 comments

Eight Books to Read If You're Still Thinking About the Roman Empire

https://lithub.com/eight-books-to-read-if-youre-still-thinking-about-the-roman-empire/
2•theanonymousone•25m ago•0 comments

Bullet

https://www.codewithbullet.com/
1•tosh•27m ago•0 comments

Welcome to Rubi, a Rule-Based Integrator

https://rulebasedintegration.org/
2•Tomte•28m ago•0 comments

Most biomedical publications show signs of LLM-assisted writing

https://arxiv.org/abs/2608.10715
1•sbulaev•31m ago•0 comments

We picked 35 of the top young scientists and engineers

https://www.technologyreview.com/2026/08/12/1141605/2026-innovators-under-35-top-young-scientists...
1•joozio•36m ago•0 comments

Never Trust Your AI Agent's Own Sandbox

https://badshah.io/blog/never-trust-your-ai-agents-sandbox/
1•bnchandrapal•36m ago•0 comments

Show HN: FlightWifi – Know if a flight's Wi-Fi can hold a video call

https://chromewebstore.google.com/detail/flightwifi/omoclebljmjljikaoaogdpahjlbmdbin
1•Priyansh7•36m ago•0 comments

Big Tech Wants to Harvest Your Thoughts

https://www.wired.com/story/book-excerpt-the-vanishing-earth-james-crawford-brain-mining/
3•beardyw•37m ago•1 comments

Cellebrite zero-day exploit used to target phone of Serbian student activist

https://securitylab.amnesty.org/latest/2025/02/cellebrite-zero-day-exploit-used-to-target-phone-o...
1•upofadown•37m ago•0 comments

OAuth for Agents

https://blog.exe.dev/oauth-for-agents
4•tosh•42m ago•0 comments

On Hacking – What Is Hacking?

https://stallman.org/articles/on-hacking.html
5•hskimse•42m ago•1 comments

Interviewing Engineers in the AI Era: Lessons from a Year of Rebuilding

https://www.coinbase.com/en-ca/blog/interviewing-engineers-in-the-ai-era-lessons-from-a-year-of-r...
2•jreynar•42m ago•0 comments