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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!

Deft – an authentic human writing model

https://deftwriting.com
1•andrewlin247•13m ago•0 comments

Neuroscience is in big trouble [video]

https://www.youtube.com/watch?v=jHGx7HBB-J4
2•thelastgallon•15m ago•0 comments

A new era of biohacking in a retro medium

https://elasticstage.com/36n9/releases/36n9-genetics-audiotransduction-album
1•jollydragonroge•17m ago•0 comments

More screen time since childhood associated with better cognitive processing

https://www.jyu.fi/en/news/more-screen-time-since-childhood-associated-with-better-cognitive-proc...
1•jv22222•17m ago•0 comments

Google Drive outage – at what point is slow, down?

https://www.google.com/appsstatus/dashboard/incidents/sjDiph2NXGAfkYYLfK7T
1•chi_features•19m ago•1 comments

Show HN: I made a comic series explaining Claude – Chat, Cowork, and Code

https://github.com/Fake4d/claude-school
1•Fake4d•19m ago•0 comments

BloxStack: The professional network for Roblox creators

https://bloxstack.app/
2•hotshotqq•22m ago•0 comments

Nanvix: A Multikernel OS Design for High-Density Serverless Deployments

https://arxiv.org/abs/2604.11669
1•handfuloflight•25m ago•0 comments

Opus 5 doesn't use em-dashes in code comments

https://lalitm.com/post/code-comments-are-a-model-fingerprint/
1•lalitmaganti•27m ago•0 comments

Running Anachronistic Demakes on Vintage Atari VCS Hardware

http://deater.net/weave/vmwprod/myst_vcs/e7_cart.html
2•bananaboy•28m ago•1 comments

There's No Reason to Buy a New Phone Anymore

https://www.theatlantic.com/technology/2026/08/secondhand-tech-boom/688309/
5•annzabelle•36m ago•0 comments

Millions of Ukrainian Men Are Fleeing a Cruel Conscription System

https://www.thenation.com/article/world/ukraine-military-conscription-draft-dodgers/
5•petethomas•37m ago•0 comments

US moves to open tracts of pristine forests to logging

https://www.france24.com/en/live-news/20260818-us-moves-to-open-vast-tracts-of-pristine-forests-t...
3•geox•37m ago•0 comments

Progress in Modernizing Kernel Cryptography

https://lwn.net/Articles/1077427/
4•pykello•44m ago•0 comments

AI mines 500 years of Spanish colonial records to find hidden wrecks, lost cargo

https://www.tomshardware.com/tech-industry/artificial-intelligence/ai-company-hiring-a-literal-pi...
1•harambae•46m ago•0 comments

Securely share biotech data, but without all the setup hassle

1•Peony_VDR•46m ago•0 comments

DBimg – free image/video/audio hosting with permanent direct links

https://dbimg.app/en
1•dannbx•49m ago•0 comments

Show HN: 4bit bridge between AI and humans

https://github.com/YOalphabet/YOalphabet
3•YOalphabet•50m ago•1 comments

Mystery of 'space activity' forcing plane's Antarctic U-turn solved

https://www.stuff.co.nz/travel/361022053/us-antarctic-flight-forced-back-over-feared-russian-spac...
4•speckx•56m ago•0 comments

Types of Neural Networks You Should Know

https://ischool.syracuse.edu/types-of-neural-networks/
2•peter_d_sherman•57m ago•0 comments

Satellite operators are in panic mode due to a worsening launch crisis

https://arstechnica.com/space/2026/08/theres-a-huge-launch-crunch-right-now-and-it-will-probably-...
2•chha•1h ago•0 comments

Ask HN: Are AI credits too locked to individual applications?

1•nextma•1h ago•0 comments

Binquery – local CLI that shortlists 8–15 clips from an edit intent

https://github.com/jennifferweslowski-design/binquery
1•junwanghechu123•1h ago•0 comments

Model Hypnosis: Strong control of AI via additive subliminal effects

https://arxiv.org/abs/2608.16834
1•sbulaev•1h ago•0 comments

Kim Jong-Un Is Not Our Friend

https://www.nationalreview.com/2026/08/kim-jong-un-is-not-our-friend/
6•petethomas•1h ago•1 comments

Show HN: CommitLore – Git memory for decisions coding agents keep forgetting

https://github.com/MongLong0214/commitlore
1•weplay0628•1h ago•0 comments

Autopilot for Software Engineering

https://vorflux.com/
1•Tervicke•1h ago•0 comments

Show HN: PlugClaw – Private AI agent hardware for any phone or PC

https://plugos.net/plugclaw/
3•darkreader•1h ago•0 comments

Mathematics in the Age of AI

https://arxiv.org/abs/2608.16753
1•aaraujo002•1h ago•0 comments

Show HN: Memanto Is a Memory Agent

https://github.com/moorcheh-ai/memanto
1•supportm•1h ago•0 comments