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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!

Binance gave Russia data on IT worker in EU, now jailed over Ukraine donations

https://meduza.io/feature/2026/08/17/kriptobirzha-binance-peredala-rossiyskim-silovikam-dannye-ob...
1•Klaster_1•1m ago•0 comments

The CPU Comeback Is Upon Us

https://spectrum.ieee.org/ai-cpu-comeback
1•50kIters•3m ago•0 comments

Show HN: Verifying that an auto-submitted job application arrived

https://aiapplyd.com/
1•sneefle•7m ago•0 comments

Translating poems on Seoul Metro's platform screen doors

https://www.substack-bahn.net/p/translating-poems-on-seoul-metros
1•decimalenough•7m ago•0 comments

Skyrim with Rust

https://github.com/realfakenerd/OpenSkyrim
2•libertas_quae_s•8m ago•0 comments

Ukraine says it hit Russian rocket centre linked to Starlink-style network

https://www.reuters.com/business/aerospace-defense/ukraine-says-it-hit-russian-rocket-centre-link...
1•vrganj•10m ago•0 comments

Show HN: Desktopcolors.com – A museum for solid background colors of classic OS

https://desktopcolors.com
2•vlowrian•12m ago•0 comments

Expertise Can't Be Automated: Why Resilience Still Needs Humans

https://resilienceinsoftware.org/news/11560646
2•zdkaster•12m ago•0 comments

GPU-Based Device Fingerprinting

https://shaderghost.gg/
1•avastel•14m ago•0 comments

Why books donʼt work (2019)

https://andymatuschak.org/books/
1•groomlake•14m ago•0 comments

Secret Claude tracker shocks users after Anthropic's anti-surveillance stance

https://arstechnica.com/tech-policy/2026/07/anthropic-outed-for-claude-tracker-that-secretly-moni...
2•mgh2•15m ago•0 comments

Every student is cheating with AI

https://ben.page/cheating
1•jer0me•15m ago•0 comments

Orbs and Jellyware [video]

https://www.youtube.com/watch?v=FfCCEZ00RFw
1•tosh•17m ago•0 comments

Evaluating coding models on 40 real tickets

https://medium.com/@joeymills19/public-coding-benchmarks-dont-match-my-repo-so-i-built-my-own-305...
1•AnneWodell•17m ago•0 comments

Are LLMs good in-context tabular classifiers?

https://juleskreuer.eu/research/tabbench-llm
1•not_a_feature•18m ago•0 comments

Recover the 3D location of every photo, on phones, robots and glasses

https://www.youtube.com/watch?v=zyHMRgyLD5Y
1•nikhilsawlani•19m ago•0 comments

Watermark Scanner – find and decode hidden characters in text and code

https://watermark-scanner.netlify.app/
1•emryyrme•19m ago•0 comments

I Blog

https://simonwillison.net/series/blogging/
1•janandonly•24m ago•0 comments

Pony's Arena Allocator

https://www.ponylang.io/blog/2026/08/ponys-arena-allocator/
2•birdculture•25m ago•0 comments

A retired tire engineer and 48,933 other feeds

https://dev.profullstack.com/~anthony/blog/016-post.html
1•buffer_overlord•26m ago•0 comments

Most productivity apps assume that organization is your bottleneck

https://brainbattler.nattly.uk/
1•Salim_wariz•32m ago•1 comments

500k Applicants, 583 Jobs: The Frantic Scramble for Work in India

https://www.wsj.com/world/india/500-000-applicants-583-jobs-the-frantic-scramble-for-work-in-indi...
2•rustoo•32m ago•0 comments

HackEurope 2026: A short rant on AI and hackathons

https://duti.dev/blog/2026/spr/
3•mindracer•34m ago•0 comments

Judge sets framework for Nine PBS to retrieve archival data

https://current.org/2026/08/judge-sets-framework-for-nine-pbs-to-retrieve-archival-data/
1•croes•35m ago•0 comments

How to Fix Diagonal Speed Bug in Pygame – No AI – Pygame Tutorial for Beginners

https://www.youtube.com/watch?v=lY0GTTg_FsQ
1•shriekdj•36m ago•0 comments

Ask HN: How can I tell articles on HN is AI written or not?

1•BrucecarlL•38m ago•2 comments

Show HN: RAX Compute Gateway – One API for OpenAI, Anthropic, and Gemini

https://github.com/radium0090/Compute-Gateway
1•radium90•41m ago•0 comments

Microsoft Is Retiring Excel's Copilot() Function After Just One Year

https://windowsreport.com/microsoft-is-retiring-excels-copilot-function-after-just-one-year/
1•thunderbong•45m ago•0 comments

People of ACM – Russ Cox

https://www.acm.org/articles/people-of-acm/2026/russ-cox
1•signa11•51m ago•0 comments

Show HN: Columnary, a better experience for reading long articles

https://chromewebstore.google.com/detail/columnary/dechndjpekelnmgcchblfbmcceonfdoo
2•exclipy•53m ago•0 comments