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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!

8 Out of 10 Banks in Belgium Hate This One Weird EID RCE

https://amibeingpwned.com/blog/8-in-10-banks-in-belgium
1•Doohickey-d•25s ago•0 comments

Spec Driven Development with markdown-den

https://www.markdown-den.com/blog/ai-assisted-dev
2•dguridi•4m ago•0 comments

Does Silicon Valley Dream of Philip K Dick?

https://www.ft.com/content/bdcf7729-3b03-49ec-82fb-b5773fdaa990
2•bookofjoe•4m ago•1 comments

Odi – A note app where notes can be apps, and apps can be plugins

https://www.odinotes.com/
3•chin2413•4m ago•0 comments

Mini Cities – Cato Institute

https://www.cato.org/blog/friday-feature-mini-cities
2•danielfetz•6m ago•0 comments

Show HN: JustAPI:a Python web framework where the framework itself is Rust

https://blog.swadhin.cv/blog/just-api-a-python-framework/
1•0xER•8m ago•0 comments

Cloudflare R2 Outage (Sigh)

https://www.cloudflarestatus.com
3•minraws•9m ago•1 comments

Claude Code in 9 lines of Python

https://www.reddit.com/r/LocalLLaMA/comments/1viwlgj/claude_code_in_9_lines_python
1•larodi•10m ago•0 comments

The human-origin story is being revised

https://www.theatlantic.com/science/2026/08/human-origins-dna-tools-earthworks/688225/
1•arto•11m ago•0 comments

ICQ Reborn

https://icqr.net/
1•bartkappenburg•12m ago•0 comments

Are We Being Railroaded by AI?

https://tomtunguz.com/llm-impact-gdp/
1•bonsai_spool•15m ago•0 comments

What Is Spiralism? The AI Chatbot Religion

https://www.techrepublic.com/article/news-ai-chatbot-spiralism-movement/
2•Alien1Being•22m ago•0 comments

AI Video Taking over YouTube

4•toit4wing•26m ago•2 comments

Mycelium AI Policy

https://github.com/hawkw/mycelium/commit/b77e854bcbbe7c64f644e4c6ceeaebb74c80c79a
2•tekacs•27m ago•0 comments

OpenAI acquires NextSlide as ChatGPT expands into PowerPoint

https://runtimewire.com/article/openai-acquires-nextslide-chatgpt-powerpoint
2•ryanmerket•27m ago•0 comments

1mongpt: A large language model, except it's one guy

https://iwanttochee.se
2•raygen•28m ago•0 comments

Denmark Requires Oral Defenses for Students' Written Work to Counter AI Cheating

https://mezha.net/eng/bukvy/ca117584_denmark_requires_oral/
32•theanonymousone•28m ago•7 comments

Some software talks I like

https://char.lt/blog/2026/08/talks-i-like/
3•birdculture•29m ago•0 comments

Hackers breach TrueConf to trojanize client installers with backdoors

https://www.bleepingcomputer.com/news/security/hackers-breach-trueconf-to-trojanize-client-instal...
3•sbulaev•30m ago•0 comments

The first self-driving vehicle on Mars has proven to be a smashing success

https://arstechnica.com/space/2026/08/the-first-self-driving-vehicle-on-mars-has-proven-to-be-a-s...
2•Brajeshwar•31m ago•0 comments

You only have three weeks to buy a Switch 2 before its price goes up

https://www.t3.com/tech/gaming-consoles/reminder-this-is-the-last-month-to-buy-a-switch-2-before-...
2•mushstory•31m ago•0 comments

Show HN: Algebruh - Cross-check arithmetic claims with Z3, cvc5, and Lean

https://github.com/skorotkiewicz/algebruh
2•modinfo•33m ago•0 comments

The "Compliance and Ethics" Angle (Safest)

https://kylesinvestigation.com/
2•mkyle71•34m ago•0 comments

Veritas Forge: Cryptographic proof layer for AI decisions

https://forge.aurochthryx.com
1•cartertbirchall•38m ago•0 comments

Optimizing software: Computing professor's 'egg' downsizes programs

https://techxplore.com/news/2026-08-optimizing-software-professor-egg-downsizes.html
2•theanonymousone•39m ago•0 comments

How to Detect AI Slop

https://www.youtube.com/watch?v=ORgKY9AlybA
1•casey2•40m ago•0 comments

ShowHN: OpenMetaLoop - autonomous long-horizon multi-session execution

https://github.com/openmetaloop/openmetaloop
1•IzhaarTejani•42m ago•1 comments

Show HN: SignalFusionKit – a watchOS sensor-fusion library for risk detection

https://github.com/izetg/SignalFusionKit
1•Ember_Wipe•43m ago•0 comments

Simulating the world with 83B persona agents

https://matraix.ai
1•anigbrowl•48m ago•0 comments

Attorney General seeks to block Discord in Brazil

https://valorinternational.globo.com/law/news/2026/08/07/attorney-general-seeks-to-block-discord-...
2•xinayder•50m ago•1 comments