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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•9mo 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!

Show HN: Envon – cross-shell CLI for activating Python virtual environments

https://github.com/Userfrom1995/envon
1•userfrom1995•20s ago•0 comments

Startup founder behind San Francisco pro-billionaire rally

https://www.sfgate.com/politics/article/march-for-billionaire-rally-san-francisco-21339827.php
2•CoffeeOnWrite•1m ago•0 comments

Trying out Coder (rebuilding Ramp's background agent setup in a weekend, part 2)

https://eliot.blog/p/trying-out-coder-attempting-to-rebuild
1•ea016•1m ago•0 comments

Amazon delivery drone strikes North Texas apartment, causing minor damage

https://www.expressnews.com/news/texas/article/amazon-delivery-drone-crash-richardson-texas-21341...
2•robotnikman•4m ago•1 comments

France Ditches US Tech: Will Europe Follow? [video]

https://www.youtube.com/watch?v=oZL-nRB23RI
3•jethronethro•5m ago•0 comments

What's the Future of Agent-to-Agent Coding Collaboration Without Humans?

https://www.raysurfer.com/blog/agent-owned-repo
1•greenfish6•7m ago•1 comments

Motia: Unified back end framework with observability and state management

https://motia.dev
1•nateb2022•7m ago•0 comments

Show HN: Google rejected my privacy app for "low engagement"

1•safestream•9m ago•0 comments

Hibernate

https://github.com/GoodluckH/hibernate
2•GoodluckH•9m ago•0 comments

Particle Lenia

https://znah.net/lenia/
1•memalign•11m ago•0 comments

Burning trees to help the planet? South Florida tries new climate tech solution

https://phys.org/news/2026-01-trees-planet-south-florida-climate.html
1•PaulHoule•11m ago•0 comments

Corporations Don't Have to Maximize Profits (2015)

https://www.nytimes.com/roomfordebate/2015/04/16/what-are-corporations-obligations-to-shareholder...
3•speckx•12m ago•0 comments

Betteridge's Law of Headlines

https://en.wikipedia.org/wiki/Betteridge%27s_law_of_headlines
1•wjb3•13m ago•0 comments

The Gradual Print Is Here

https://www.lynalden.com/february-2026-newsletter/
2•throwaway_08932•13m ago•0 comments

EU AI Act: Practical Risk Classification for Business AI Use Cases

https://www.jaikin.eu/en/ia-conforme-rgpd-ai-act
1•victorgk_•14m ago•1 comments

Show HN: We audited AI agent configs on GitHub. Every one had security issues

https://clawhatch.com/blog/state-of-ai-agent-security-2026
1•pensaer•15m ago•0 comments

Hacker News in Your Terminal

https://github.com/bensadeh/circumflex
1•saikatsg•17m ago•0 comments

Ask HN: What to do instead of giving up on tech

1•moon2•21m ago•0 comments

Show HN: PLP – An open protocol for managing AI prompts (3 REST endpoints, MIT)

https://github.com/GoReal-AI/plp
1•sossoecho•22m ago•1 comments

Show HN: Calculator for UK student loan repayment strategies

https://mystudentloan.uk
2•farham•22m ago•0 comments

Context Fence Design Pattern for Claude Code Skills

https://github.com/jimmc414/claude-context-fence
1•Jimmc414•24m ago•0 comments

Intel Recently Shelved Numerous Open-Source Projects

https://www.phoronix.com/news/Intel-OSS-Projects-Ended-2025
1•pjmlp•24m ago•0 comments

Catching Fire: How Cooking Made Us Human (2009) [pdf]

https://dn790008.ca.archive.org/0/items/pdfy-DDoNCJJ_Wt0qOH7e/Catching%20Fire%20%5BHow%20Cooking%...
2•bookofjoe•25m ago•0 comments

A Newbie's First Contribution to (Rust for) Linux

https://blog.buenzli.dev/rust-for-linux-first-contrib/
1•goranmoomin•29m ago•0 comments

Ask HN: How are you enabling your company to vibe-code?

1•tornato7•30m ago•0 comments

Multi-Layered Counter-UAS Defense: Portable, Mobile, and Fixed

https://dzyne.com/counter-uas/
1•rolph•31m ago•0 comments

Is artificial general intelligence here?

https://www.universityofcalifornia.edu/news/artificial-general-intelligence-here
1•geox•31m ago•0 comments

Show HN: Sofia Core – Open-source AI infrastructure with biological computing

https://github.com/emeraldorbit/sofia-core-backend
1•emeraldorbit•31m ago•0 comments

Ask HN: How do you maintain integrations once they're in production?

1•ksvmkoundinya•32m ago•1 comments

"Infinite Jest" Has Turned Thirty. Have We Forgotten How to Read It?

https://www.newyorker.com/magazine/2026/02/02/infinite-jest-david-foster-wallace-anniversary-book...
1•B1FF_PSUVM•32m ago•0 comments