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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•11mo 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!

Tosijs-UI's new composable icon system

https://loewald.com/blog/2026/4/26/tosijs-icon-system
1•podperson•5m ago•1 comments

Is Fahrenheit 451 becoming relevant again?

https://kevinboone.me/fahrenheit451.html
2•AlexeyBrin•6m ago•1 comments

Beyond Silicon: Materials, Mechanisms, and Methods for Physical Neural Computing

https://arxiv.org/abs/2604.09833
1•Jazgot•8m ago•1 comments

San Francisco Is Going Nuts over a Giant Sea Lion Named Chonkers

https://www.wsj.com/lifestyle/san-francisco-sea-lion-pier-39-chonkers-145628c0
1•reaperducer•10m ago•0 comments

Quadro – Our Story

https://quadroshop.co.uk/pages/our-story
1•nmstoker•10m ago•1 comments

Fluendora: The Realm of Scribes

https://fluendora.com
1•lizzrikGames•12m ago•1 comments

Self-hosted S3 after MinIO: lightweight alternatives for 2026

https://productimpossible.com/articles/self-hosted-s3-after-minio/
1•sebakubisz•13m ago•0 comments

Verantyx – A native IDE that obfuscates code before sending it to Cloud LLMs

https://github.com/Ag3497120/verantyx
1•kofdai•16m ago•0 comments

My site "Works on My Machine" didn't work on my machine for two days

https://worksonmymachine.io/posts/001-this-site/
1•mcpoowl•16m ago•0 comments

Anatomy of a Throttler

https://planetscale.com/blog/anatomy-of-a-throttler-part-3
1•theorchid•16m ago•0 comments

Exact TSP from Scratch

https://gist.github.com/nilanjankarmakar51-glitch/27ca60cf793cd5e4f64af19fdc5d2345
1•logicmagic•17m ago•0 comments

I stopped building onboarding and built AI infrastructure instead

https://www.indiehackers.com/post/i-stopped-building-onboarding-and-built-ai-instead-0VMigrTEwai1...
1•stangineer•20m ago•0 comments

Project Iceworm (1959)

https://en.wikipedia.org/wiki/Project_Iceworm
1•AgentNews•27m ago•0 comments

Gödel, Escher, Bach, Wallace: The "O's, D's and P's" in Infinite Jest

https://www.chiply.dev/post-reperspectivizing-orin
1•chiply•31m ago•1 comments

Ada's is Closing June 6th, 2026

https://adasbooks.com/adas-closing
2•thebeardisred•36m ago•0 comments

Get a Point on the Real Number Line

https://www.onemathematicalcat.org/numberLinePopulation.htm
1•subset•38m ago•0 comments

. LLMs Can't Count: A Hallucination Taxonomy Across GPT, Gemini, and Claude

https://zenodo.org/records/19787746
1•h_hasegawa•40m ago•0 comments

WAB Web Agent Bridge -An Open-Source OS for AI Agents

https://webagentbridge.com
1•abokenan444•42m ago•0 comments

Show HN: I remade my blog into a Windows 3.1 environment

https://passo.uno/
4•theletterf•46m ago•0 comments

Show HN: <hyper-frame> – an iframe to frame 100% of the Internet

https://www.hyper-frame.art/?actual
2•keepamovin•48m ago•0 comments

Blockchain as an Artistic Medium

https://silkarthouse.com/features/why-i-keep-track-of-what-0xg-is-coding
2•0xG•49m ago•0 comments

Show HN: I built a tool to bootstrap VLESS and REALITY over SSH (with rollback)

1•insany•49m ago•0 comments

A short-lived lock for a long-running evaluation

https://swaranga.dev/posts/a-short-lived-lock-for-a-long-running-evaluation/
3•swaranga•50m ago•0 comments

Musk and Altman's bitter feud over OpenAI to be laid bare in court

https://www.theguardian.com/technology/2026/apr/26/musk-altman-openai-court
3•beardyw•50m ago•0 comments

Do I even want to be a coder anymore?

https://polso.info/do-i-even-want-to-be-a-coder-anymore
3•Risse•51m ago•0 comments

Chat GPT wrote your code, what else is missing?

https://blog.viewfromtheweb.com/chat-gpt-wrote-your-code-what-else-is-missing-57dc2cd8/
2•rickdg•51m ago•0 comments

Show HN: A template to build desktop, web and mobile apps from the same codebase

https://github.com/odest/tntstack
3•odest•51m ago•1 comments

The Secret Life of NaN

https://anniecherkaev.com/the-secret-life-of-nan
3•prakashqwerty•52m ago•0 comments

System over Model: Zero-Day Discovery at the Jagged Frontier

https://aisle.com/blog/system-over-model-zero-day-discovery-at-the-jagged-frontier
2•ahoog42•53m ago•0 comments

AI, Vikings and Magic Swords

https://yadin.com/notes/swords/
2•dryadin•56m ago•0 comments