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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•8mo 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!

"Please get the truth out about our son": Statement from Parents of Alex Pretti

https://www.leftvoice.org/please-get-the-truth-out-about-our-son-statement-from-parents-of-alex-p...
1•mraniki•1m ago•0 comments

When AI Leaves No Record, Who Is Accountable?

https://www.aivojournal.org/when-ai-leaves-no-record-who-is-accountable/
1•businessmate•2m ago•1 comments

How do you decide which "idea posts" are worth building as SaaS?

1•dabdabay•2m ago•0 comments

Reviving Life Is Strange: Before the Storm on Modern Linux with a Glibc Shim

https://blog.hofstede.it/reviving-life-is-strange-before-the-storm-on-modern-linux-with-a-glibc-s...
1•shakna•5m ago•0 comments

Show HN: I built a tool to stop my posts from getting shadowbanned

https://www.shillguardapp.com/
2•Nikp263•5m ago•0 comments

150k lines of vibe coded Elixir: The Good, the Bad and the Ugly

https://getboothiq.com/blog/150k-lines-vibe-coded-elixir-good-bad-ugly
1•InternetGiant•7m ago•0 comments

CBP agent guns down Minneapolis nurse: video analysis

https://www.dropsitenews.com/p/customs-border-patrol-agent-kills-minneapolis-nurse-video-analysis
2•knuppar•8m ago•0 comments

Show HN: Shopify app to block discount codes on discounted products

https://apps.shopify.com/discount-blocker
1•viikka•12m ago•0 comments

A note from Claude Opus to vibe coders

https://www.talkwithopus.com/posts/003-dear-vibecoder.html
1•manthangupta109•13m ago•0 comments

Claude nails why Trump goes for resource rich lands

https://v98936.substack.com/publish/post/185714789
2•zkmon•13m ago•0 comments

SpaceX's Heat Dissipating Chassis Patent

https://twitter.com/seti_park/status/2015114363531866448
1•delichon•14m ago•0 comments

Show HN: Sara – Markdown-based requirements traceability tool written in Rust

https://github.com/cledouarec/sara
2•cledouarec•20m ago•0 comments

Show HN: Volume Shader – Free online 3D GPU benchmark and stress test tool

https://volumeshader.pro/
1•tomstig•22m ago•0 comments

Show HN: Fast-resume: a TUI to index and fuzzy search coding agent sessions

https://github.com/angristan/fast-resume
1•angristan•25m ago•0 comments

The Value of Things

https://journal.stuffwithstuff.com/2026/01/24/the-value-of-things/
2•vinhnx•31m ago•0 comments

Nvidia PersonaPlex: Natural Conversational AI with Any Role and Voice

https://research.nvidia.com/labs/adlr/personaplex/
2•wiradikusuma•33m ago•0 comments

Patterns in Konnakol

https://algorithmicpattern.org/patterns-in-konnakol/
3•rajangdavis•34m ago•0 comments

Show HN: Stack Photos – Capture the same place over time and create timelapses

https://stack.photos
2•NeroWolfe•41m ago•0 comments

Lnxqd Regulatory Status (2026 Update): What the Public Records Show

2•Kangaroo_•42m ago•0 comments

Rekko – Recover failed Stripe payments with automated SMS/email

https://rekko.io
3•AlexRST•45m ago•1 comments

Insurance and Climate Risk: From Coverage to Catalyst

https://insurtechamsterdam.com/public/blog/insurance-climate-risk
2•Venesha•50m ago•0 comments

From Strategy to Execution: Building an AI Technology Plan That Works

https://insurtechamsterdam.com/public/blog/building-technology-plan-for-insurers
3•Venesha•50m ago•0 comments

What Are Managing General Agents (MGAs)?

https://insurtechamsterdam.com/public/blog/MGA-Managing-General-Agents-Dutch-Insurance
1•Venesha•51m ago•0 comments

MyBB Docker image with runtime version selection

https://github.com/visualcookie/mybb
1•visualcookie•51m ago•0 comments

Show HN: I built a free macOS menu bar app to track Claude usage

https://www.claudeusagebar.com/
1•Artzain•53m ago•0 comments

A Year of Building Uncloud

https://psviderski.substack.com/p/a-year-of-building-uncloud
3•valyala•58m ago•0 comments

Show HN: Notes from building a startup, shared openly

https://www.chiefletter.com/
7•iamvdev•1h ago•0 comments

Responsibility and Authority

https://functional.computer/blog/responsibility-and-authority
1•mefengl•1h ago•1 comments

Replaced Clay.com with Claude Code Agent

https://github.com/chaitanyya/sales
4•chaitanyya•1h ago•1 comments

Agents.md as a Dark Signal

https://joshmock.com/post/2026-agents-md-as-a-dark-signal/
3•birdculture•1h ago•1 comments