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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!

Agentic AI in a Smolbox

https://remyhax.xyz/posts/smolbox/
1•jerrythegerbil•2m ago•0 comments

Quake Shareware, a CD-ROM just a little too full

https://fabiensanglard.net/quake_shareware_cd/index.html
2•shdon•3m ago•0 comments

Try any open source model for free

https://www.tryingopen.com/
1•HussamAli•4m ago•3 comments

Virgin Galactic wants your help naming its new Delta class spaceship

https://arstechnica.com/space/2026/08/virgin-galactic-wants-your-help-naming-its-new-delta-class-...
1•ohjeez•5m ago•1 comments

Samuel – mimic your speech using Pink Trombone with a model

https://samuel.vvolhejn.com/
1•smusamashah•7m ago•1 comments

Theodore John Conrad

https://en.wikipedia.org/wiki/Theodore_John_Conrad
1•chistev•7m ago•0 comments

Fairphone 6 and PostmarketOS working main camera

https://catcrafts.net/posts/fairphone-6-postmarketos-working-main-camera
2•pizzaiolo•8m ago•0 comments

'Buy Now, Pay Later' Lenders Pitch Loans for Needs Like Electricity and Rent

https://www.nytimes.com/2026/08/17/business/buy-now-pay-later.html
3•apparent•10m ago•1 comments

What's behind the rise of teens spying for Russia?

https://mssv.net/2026/08/13/whats-behind-the-rise-of-teens-spying-for-russia/
1•programLyrique•11m ago•0 comments

Penny Pritzker Warns China's Rise in Research Rankings Is 'Not Good' for U.S.

https://www.thecrimson.com/article/2026/8/10/pritzker-china-research-rankings/
2•Alien1Being•14m ago•0 comments

Gitweb – Git web interface (web front end to Git repositories)

https://git-scm.com/docs/gitweb
1•nodar86•17m ago•0 comments

Tracking the BitTorrent Tracker Infrastructure

https://tracker.evilbit.de/
1•pawal•19m ago•1 comments

Control Charts Make AI Agents Cheaper, Less Necessary, and More Useful

https://newoldweb.com/control-charts-make-ai-agents-less-necessary-and-more-useful
1•netaustin•21m ago•0 comments

My friends all hate AI; I just joined an AI startup

https://www.fast.ai/posts/2026-08-18-returning-to-AI/
3•eamag•22m ago•0 comments

New Amiga logo looks aesthetically well-composed

https://www.reddit.com/r/amiga/comments/1vr5jqi/new_amiga_logo_looks_aesthetically_very/
1•doener•23m ago•0 comments

US tech stock correction likely, warn ECB economists

https://www.ft.com/content/cb4b22ab-4183-4d19-be60-6d2fab86d86d
4•aanet•23m ago•1 comments

Haxy is a Git alternative that stores metadata (issues, PRs etc.) in the repo

https://github.com/xit-vcs/haxy
1•nafey•24m ago•0 comments

Run Qwen locally on Windows and use it remotely from any device

https://www.hiramdeals.com/blog/host-qwen-privately-windows
1•hiramwen•25m ago•1 comments

Foreign psyops campaign targeting American consumer AI (2025)

https://www.ynetnews.com/tech-and-digital/article/rj00kxqzaxx
2•nervai•26m ago•0 comments

What rising Treasury yields are telling us

https://www.axios.com/2026/08/17/treasury-yields-warsh-bonds
2•toomuchtodo•28m ago•1 comments

An interactive display stack explaining optical bonding

https://designshippers.com/work/laminated-display-stack.html
1•krm01•30m ago•0 comments

OS Development Wiki

https://wiki.osdev.org/Expanded_Main_Page
2•pykello•31m ago•0 comments

Show HN: I made a 3D Globe platform to promote your startup based on your MRR

https://mrrglo.be
1•sc4p1n•31m ago•0 comments

OpenAI's autonomous hackers and the newsroom revolt of 2020

https://muddy.jprs.me/posts/2026-08-16-the-agents-discovered-slack/
1•jprs•32m ago•0 comments

There's a Libcurl.dll in My System32

https://daniel.haxx.se/blog/2026/08/17/theres-a-libcurl-dll-in-my-system32/
4•chmaynard•32m ago•0 comments

EY turning internships into yearlong residencies as AI changes entry-level work

https://www.businessinsider.com/ey-internship-residency-career-ai-skills-2026-8
1•petethomas•33m ago•0 comments

It Is Past Time for You to Quit Elon Musk's X

https://publiccomment.blog/p/it-is-past-time-for-you-to-quit-elon-musk-s-x
12•jjoachim3•34m ago•2 comments

Vitol Won Exclusive Fuel Deals to Dominate Africa – At a Cost

https://www.bloomberg.com/news/features/2026-08-17/vitol-won-exclusive-fuel-deals-to-dominate-afr...
1•petethomas•36m ago•0 comments

Could Beowulf See Blue?

https://www.deadlanguagesociety.com/p/history-english-colour-words
3•gherkinnn•38m ago•0 comments

Built a free Irish sport TV listings site

https://sportontvireland.ie/about
1•cf100clunk•38m ago•1 comments