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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!

Kilk – an offline, native macOS code and text editor with encoding detection

https://apps.apple.com/ca/app/kilk-text-editor/id6816437134?mt=12
1•OxinStudio•2m ago•0 comments

Starting the R3Forth REPL

https://www.youtube.com/watch?v=RAKLhs8BKJQ
1•phreda4•3m ago•0 comments

Writing Code vs. Shipping Code: Productivity Effects Across AI Tool Generations [pdf]

https://www.mertdemirer.com/Papers/Demirer_Writing_vs_shipping_code.pdf
1•andsoitis•4m ago•0 comments

Easily share Bitwarden vault items with a link

https://bitwarden.com/blog/easily-share-vault-items-with-a-link/
1•thunderbong•4m ago•0 comments

Microagi: Accelerating Embodied AGI

https://www.microagi.ai/
1•doener•5m ago•0 comments

The Mysterious World of Jandek

https://en.wikipedia.org/wiki/Jandek
1•DASD•11m ago•0 comments

A Reason to Eat Carbs

https://www.technologyreview.com/2026/10/20/1145279/a-reason-to-eat-carbs/
3•gumby•12m ago•0 comments

Heart Treatment from the 1970s Could Also Improve Memory in Alzheimer's Patients

https://www.sciencealert.com/this-heart-treatment-from-the-1970s-could-also-improve-memory-in-alz...
3•thunderbong•13m ago•0 comments

A lightweight C implementation of Unix utilities (grep/tail/cat)

https://github.com/b3hzzzad/c-unix
2•behzad163•19m ago•0 comments

LabRobotBench v0.1: Benchmarking wet lab robotics

https://gamowlabs.com/lab-robot-bench-v0-1
6•wardbradt•22m ago•0 comments

Help Us Improve Techrights

https://techrights.org/n/2026/10/20/Help_Us_Improve_Techrights.shtml
1•amcclure•24m ago•0 comments

Wolcott man pleads guilty to $1M cryptocurrency fraud

https://www.wtnh.com/news/connecticut/new-haven/wolcott-man-pleads-guilty-to-1m-cryptocurrency-fr...
3•paulpauper•30m ago•0 comments

A Nice Tracking Website

https://www.trumpactiontracker.info/?domains=1%2C1%2C0%2C0%2C0%2C0%2C0%2C1%2C0%2C0
2•oldfuture•30m ago•0 comments

Show HN: Wellbody [Body Health Tamagotchi]

https://wellbody.me
2•RAGcontent•30m ago•1 comments

New Proliferation Era – Why more countries will build the bomb

https://northbranchmedia.substack.com/p/the-new-proliferation-era
1•northbranchm•31m ago•0 comments

Show HN: Drop in a folder of HTML and get back a private URL

https://eze.page/
1•ahyield•32m ago•0 comments

A Decade-Old Bug That Could Have Minted Unlimited XRP

https://247wallst.com/investing/cryptocurrency/2026/10/10/a-decade-old-bug-that-could-have-minted...
1•paulpauper•33m ago•0 comments

MapleSpire – Open-source C4 architecture modelling, offline-first

https://maplespire.ca/en/
2•oliveralbertini•34m ago•0 comments

A $168,000 Michael Jordan rookie card rocked the $15B card industry

https://www.businessinsider.com/anthony-curcio-trading-fraud-scandal-psa-2026-8
2•paulpauper•34m ago•0 comments

Do Not Trust, Continuously Verify (Your AI Agents)

https://altchan.org/sh/41
2•Bender•35m ago•0 comments

Upcoming Critical PHP Security Release (CVSSv4 score of 9.2)

https://www.php.net/index.php
4•kacy•36m ago•1 comments

Show HN: One click flight booking in Claude

https://mcp.bonbook.co/claude-setup
5•themagyar•40m ago•2 comments

AGI-S – an AI platform I'm building

2•smitsjoshi•41m ago•1 comments

Musk calls Tesla-SpaceX merger a 'good idea'

https://www.reuters.com/business/media-telecom/spacex-quarterly-revenue-jumps-beats-estimates-ai-...
8•lossolo•44m ago•3 comments

When AI agents take matters into their own hands

https://www.economist.com/business/2026/10/15/when-ai-agents-take-matters-into-their-own-hands
3•ijidak•46m ago•0 comments

How We Manage More Than 11,000 Application Configuration Parameters

https://medium.com/@krawa76/how-we-manage-more-than-11-000-application-configuration-parameters-1...
2•krawa76•47m ago•0 comments

Generate Scripts with Amytis

https://www.amytis.io/blog/generate-scripts-with-amytis
2•JohnHammersley•48m ago•0 comments

Node.js Wednesday, October 21, 2026 Security Releases

https://nodejs.org/en/blog/vulnerability/october-2026-security-releases
2•defenestration•49m ago•0 comments

Push-based KV transfer to improve TTFT, TPOT for disaggregated inference in vLLM

https://aws.amazon.com/blogs/machine-learning/push-based-kv-transfer-to-improve-ttft-and-tpot-for...
3•gmays•50m ago•0 comments

Tiny London

https://tiny.london/
2•duck•52m ago•0 comments