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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!

Freemediaheckyeah

https://fmhy.net/
1•con•2s ago•0 comments

Chinese artificial intelligence put a new spin on Winter Olympics action

https://www.scmp.com/tech/big-tech/article/3344139/how-chinese-artificial-intelligence-put-new-sp...
1•merlioncity•4m ago•0 comments

Show HN: Gridl – A daily block puzzle game

https://gridlgame.com
1•pj3677•6m ago•0 comments

OpenRockets Foundation, 2025 Impact Report

https://mag.openrockets.com
1•nekshavs•7m ago•1 comments

The Principles of Deep Learning Theory (2021)

https://arxiv.org/abs/2106.10165
2•vinhnx•7m ago•0 comments

US appeals court orders lawyer to pay $2,500 over AI hallucinations in brief

https://www.reuters.com/legal/government/us-appeals-court-orders-lawyer-pay-2500-over-ai-hallucin...
2•1vuio0pswjnm7•8m ago•0 comments

Is Prime Day just one big scam?

https://www.pricedropnotifications.com/prime_day.html
2•pricedrop51•9m ago•0 comments

Laser writing in glass for dense, fast and efficient archival data storage

https://www.nature.com/articles/s41586-025-10042-w
1•SurfSquatch•13m ago•0 comments

Rare 'planetary parade' will return to the evening sky this week

https://www.livescience.com/space/planets/rare-planetary-parade-will-return-to-the-evening-sky-th...
2•ColinWright•13m ago•0 comments

Show HN: I scraped 5,700 YC companies to find what niches are now getting funded

https://bigideasdb.com/saas-sellers-report
1•not_pineapple•15m ago•1 comments

Show HN: Coasty.ai – We just hit SOTA on OSWorld (computer-use agent benchmark)

1•PrateekJ17•22m ago•2 comments

Show HN: OpenBrowserClaw – No Mac Mini. No VPS. No Cloud Deploy. Just Open a Tab

https://www.openbrowserclaw.com/
1•sachaa•22m ago•1 comments

Phoebe Gates wants her $185M AI startup to succeed without 'my last name'

https://fortune.com/2026/02/21/phoebe-gates-startup-phia-succeed-without-help-parents-bill-gates-...
3•randycupertino•27m ago•0 comments

Speculative Decoding in LLM Inference

http://ternarysearch.blogspot.com/2026/02/speculative-decoding-in-llm-inference.html
1•paladin314159•27m ago•0 comments

Still Teaching Air Guitar? University Entrepreneurship in the Age of AI

https://www.thisisgoingtobebig.com/blog/2026/2/19/are-they-still-teaching-air-guitar-thinking-abo...
1•ceonyc•28m ago•1 comments

Nobel laureate invents machine that harvests water from dry air

https://www.theguardian.com/environment/2026/feb/21/nobel-laureate-omar-yaghi-invents-machine-tha...
1•tempestn•32m ago•0 comments

Show HN: Acube – Rust framework where forgetting security is a compile error

https://github.com/lewKcoder/acube
1•lewKcoder•33m ago•1 comments

CrewAI Reaches 44K GitHub Stars as Multi-Agent Orchestration Gains Momentum

https://theagenttimes.com/articles/44335-stars-and-counting-crewais-github-surge-maps-the-rise-of...
1•Ross00781•34m ago•1 comments

LGP to take Mister Car Wash private in $3.1B deal

https://www.alternativeswatch.com/2026/02/22/lgp-take-mister-car-wash-private-3-1-billion-deal/
2•mattas•38m ago•0 comments

Using Nsnotifyd with a PowerDNS Secondary

https://blog.feld.me/posts/2026/02/nsnotifyd-with-powerdns-secondary/
1•todsacerdoti•38m ago•0 comments

In Search of the Leisure Class

https://libertiesjournal.com/articles/insearch-of-the-leisure-class/
2•fferen•42m ago•0 comments

Fast starting Clojure runtime built with GraalVM native-image and Crema

https://github.com/borkdude/cream
3•yogthos•45m ago•0 comments

The JavaScript Oxidation Compiler

https://oxc.rs/
4•modinfo•46m ago•0 comments

SpaceX gets federal approval for Starship launches, AI satellites from Florida's

https://www.usatoday.com/
2•bookmtn•46m ago•1 comments

Show HN: OpenClaw alternative written in Golang and talk with you in voice

http://coolwulfai.com
2•coolwulf•50m ago•1 comments

Show HN: Lyra Kids – I built an AI bedtime storyteller for my daughters

https://lyra.kids/
23•Kael1•50m ago•24 comments

Log into 28 vintage computer systems in the browser / Interim Computer Museum

https://www.tomshardware.com/video-games/retro-gaming/you-can-log-into-28-vintage-computer-system...
2•russfink•53m ago•1 comments

Agentic Software Engineering Book

https://agenticse-book.github.io/
5•bananaflag•53m ago•0 comments

Ask HN: Freelance full-stack dev in between contracts

2•downbad_•56m ago•0 comments

We Have Pgvector at Home

https://theconsensus.dev/p/2026/02/22/we-have-pgvector-at-home.html
2•zdw•58m ago•0 comments