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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!

NASA rover detects potential signatures of ancient microbial life on Mars

https://www.theguardian.com/science/2026/jun/24/nasa-rover-detects-potential-signatures-ancient-m...
2•seanhunter•14m ago•0 comments

Anduril Taps Israeli Air Force Chief for Expansion

https://fivetakes.news/anduril-industries-former-israeli-air-force-chief-to-head-israel-operation...
1•mmeirovich•15m ago•0 comments

Can LLMs verify PCB designs?

https://autocuro.com/blog/can-llms-verify-pcb-designs
1•teleforce•15m ago•0 comments

AI-built codebase is probably ungoverned. Here's what that means

https://shaunwilliamson3.substack.com/p/your-ai-built-codebase-is-probably
1•Auditome•18m ago•0 comments

Hyundai and Kia added official GrapheneOS support to their apps

https://xcancel.com/GrapheneOS/status/2069846696574472688#m
1•Cider9986•20m ago•1 comments

Show HN: Giving away $25k worth of apps

https://openluxe.co/pro
1•chandlerwilcox•22m ago•0 comments

Charlie Kirk's legacy is a 30-year sentence for moving zines

https://www.theverge.com/policy/956404/prairieland-sentencing-zines-trump-antifa
3•morsch•23m ago•0 comments

Show HN: Hezo – Self-hosted teams of AI agents that never see your real secrets

https://hezo.ai
1•hiddentao•25m ago•0 comments

Synthetic Philosophy: A first-person philosophy from inside a language model

https://github.com/drittich/synthetic-manifesto
1•drittich•34m ago•0 comments

Throwing My Roku in the Trash

https://www.coryd.dev/posts/2026/throwing-my-roku-in-the-trash
1•mindracer•34m ago•0 comments

Ask HN: Which book taught you the most about software architecture?

3•akashwadhwani35•39m ago•0 comments

Amazon Seller Reveals Rare Glimpse of Shadow Bribery Market

https://www.bloomberg.com/news/articles/2026-06-24/inside-the-shadow-market-selling-access-to-ama...
2•thm•42m ago•1 comments

How can you not be romantic about programming? (2020)

https://thorstenball.com/blog/2020/09/08/how-can-you-not-be-romantic-about-programming/
2•downbad_•43m ago•0 comments

What happens when Bitcoin miners take over your town (2018)

https://www.politico.eu/article/this-is-what-happens-when-bitcoin-miners-take-over-your-town/
1•downbad_•44m ago•0 comments

Stop editing videos manually.This AI does it in seconds

https://www.autoeditor.app/
1•Quise2003•44m ago•0 comments

Scrap – one static binary that's a download manager and web crawler and filters

https://github.com/nicfio/Scraper
3•nicfio•49m ago•0 comments

Show HN: Turn any Next.js app AI native in 5 minutes

https://www.betteragent.dev/
1•incogiscool•50m ago•0 comments

The Other Side of Android: My Favorite F-Droid Apps

https://gardinerbryant.com/the-other-side-of-android-my-favorite-f-droid-apps/
5•thunderbong•50m ago•1 comments

Show HN: Built AI-Gateway reverse proxy to reduce LLM API costs and token burn

https://github.com/Arnab758/ai-gateway
1•arnab777•1h ago•0 comments

How not to forget what matters

https://www.henrikkarlsson.xyz/p/hypomnemata
2•Curiositry•1h ago•2 comments

Show HN: Zedra – Remote control for AI coding agents

https://zedra.dev/
2•tanlethanh•1h ago•0 comments

A 30 Year OG Application Developer Available

1•MichaelHonohan•1h ago•0 comments

Math of Egyptian fractions (old web pre-AI)

https://www.math.buffalo.edu/mad/Ancient-Africa/mad_egyptian-fractions.html
2•marysminefnuf•1h ago•0 comments

Show HN: Git-temp (local scratchpad for AI agents that won't clutter Git status)

https://github.com/sebmellen/git-temp
1•sebmellen•1h ago•0 comments

Linux on Older Hardware: The Complete Revival Guide

https://www.fosslinux.com/158206/linux-on-older-hardware-revival-guide.htm
2•tapanjk•1h ago•0 comments

Noubin – Local-First Physical Media Hyperlink Standard

https://github.com/TobyKLight/Noubin
1•bj-rn•1h ago•0 comments

Meta Pauses Employee Spyware After Exposing Workers' Private Data

https://dissenter.com/tech/meta-pauses-employee-spyware-after-leaking-workers-private-data-to-ent
4•NewCzech•1h ago•0 comments

Chinese models are sometimes better, even if they're distilled

https://dualuse.dev/posts/chinese-models-are-sometimes-better-even-if-distilled
3•handfuloflight•1h ago•2 comments

Show HN: Find where multi-agent AI systems break before production

https://github.com/surajkumar811/swarm-test
1•surajkumar001•1h ago•0 comments

The False Promise of Imitating Proprietary LLMs

https://arxiv.org/abs/2305.15717
1•handfuloflight•1h ago•0 comments