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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!

Intel Total Storage Encryption on Panther Lake [video]

https://www.youtube.com/watch?v=owRK0Dm6Uh4
1•pregnenolone•2m ago•0 comments

Crisis of the Late Middle Ages

https://en.wikipedia.org/wiki/Crisis_of_the_late_Middle_Ages
1•haunter•4m ago•0 comments

Ask HN: Does a startup need both founder and company X accounts?

2•OnionLayers•6m ago•0 comments

Ask HN: Do you cuss at your agent?

1•ak39•7m ago•0 comments

Toxic bosses: why do companies protect managers who make working life hell?

https://www.theguardian.com/money/2026/sep/24/toxic-bosses-why-do-companies-protect-managers-who-...
1•fallinditch•10m ago•0 comments

Show HN: Multi-agent coding feels like pre-GitHub development

https://github.com/motif-Labs/motif
1•merthdotxyz•14m ago•0 comments

Laya "System 1" Code Intelligence for AI Agents

https://github.com/leonardoventurini/scs
1•leonardovb•14m ago•0 comments

Full iPhone 4 'Antennagate' Q&A Video Surfaces After 16 Years – MacRumors

https://www.macrumors.com/2026/09/24/iphone-4-antennagate-qa-video-surfaces/
1•absqueued•19m ago•0 comments

Jamie Beaton might end up the world's most educated person

https://www.nytimes.com/2026/09/15/style/he-might-end-up-the-worlds-most-educated-person.html
1•bookofjoe•19m ago•1 comments

Vitvm: Git for VM State

https://github.com/numinous-technology/vitvm
1•joshkolo•21m ago•0 comments

Docker releases cloud sandboxes, enabling safe agentic workloads in the cloud

https://www.docker.com/c/sbx-promo/
5•pheonixblade9•21m ago•0 comments

Gmux: Tmux for GPUs

https://github.com/numinous-technology/gmux
1•joshkolo•22m ago•0 comments

Platform-Independent SIMD in Go

https://go.dev/blog/simd-experiment
1•tkhattra•22m ago•0 comments

Protecting our knowledge of human genetic diversity

https://projecttimestamper.org/blog/human-genomes/
1•arthuredelstein•23m ago•0 comments

Show HN: Jev-pilot – Jev picks Claude Code's effort, model and skill per prompt

https://github.com/Akramovic1/jev-pilot
2•akramovic•23m ago•0 comments

Preventive Software Maintenance

https://poolp.org/posts/2026-08-13/preventive-software-maintenance/
1•vcoisne•25m ago•0 comments

4% of Sessions, 65% of the Bill: 30 Days of Claude Code Telemetry

https://www.promptarmor.com/resources/claude-cost-and-risk-otel-findings
2•sarelta•29m ago•0 comments

Back and shoulder surgery is often worse than useless

https://www.economist.com/leaders/2026/09/24/back-and-shoulder-surgery-is-often-worse-than-useless
2•burntcaramel•29m ago•0 comments

Software-only quantum tool, it breaks RSA-2048 live

https://dtec9.com
1•DTec•30m ago•0 comments

Danish Health Minister summoned over secret Wegovy court proceedings

https://www.dr.dk/nyheder/indland/ida-auken-bliver-indkaldt-i-samraad-i-hemmelig-novo-sag
2•sfjailbird•31m ago•1 comments

Which AI model is best for coding? A hands-on comparison

https://flaviocopes.com/ai-coding-models/
2•ibobev•32m ago•0 comments

C74-6502 Overview

https://c74project.com/
1•stmw•33m ago•1 comments

Grieving the Loss of Details

https://purplesyringa.moe/blog/grieving-the-loss-of-details/
1•ibobev•33m ago•0 comments

Dolphin Emulator Progress Release 2609

https://dolphin-emu.org/blog/7J/
3•thepbone•34m ago•0 comments

Sir Ranulph Fiennes kept in care home illegally

https://www.telegraph.co.uk/news/2026/09/24/fiennes/
4•bbg2401•35m ago•0 comments

Bluh

https://vivico.space
1•zinicius•35m ago•0 comments

Amiga Screens: A Primer

https://www.datagubbe.se/amscr/
1•ibobev•35m ago•0 comments

Cheap and Awesome

https://www.praf.me/cheap-and-awesome
1•_praf•38m ago•0 comments

Adam Conover explains how YouTube ruined everything

https://www.theverge.com/podcast/991471/adam-conover-youtube-tv-media-union-labor-ai
1•robenkleene•38m ago•0 comments

Google's first Suncatcher orbital data center test launches October 1

https://arstechnica.com/google/2026/09/googles-first-suncatcher-orbital-data-center-test-launches...
3•sbulaev•38m ago•0 comments