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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!

Abartleby: Automate the US Visa Bureaucracy

https://tangled.org/breezykermo.tngl.sh/abartleby
2•nerdypepper•49s ago•0 comments

PEP 836 – JIT Go Brrr: The Path to a Supported JIT Compiler for CPython

https://peps.python.org/pep-0836/
1•connorbrinton•2m ago•0 comments

The Luddite festival harnessing Gen Z's rage against Big Tech

https://www.wired.com/story/inside-the-luddite-festival-harnessing-gen-zs-rage-against-big-tech/
2•rbanffy•4m ago•0 comments

Show HN: San Francisco Library Events

https://sfpl-events.ocaho.com/
1•rahimnathwani•4m ago•0 comments

Django Boilerplate (Open Source Edition of SaaS Pegasus)

https://github.com/saaspegasus/django-boilerplate/
2•rob•6m ago•0 comments

Ask HN: Why do programmers watch medical shows given that it is debugging?

1•amichail•7m ago•1 comments

Reverse-Engineered Token Value of Coding Agent Plans

https://devforth.io/agents-for-code/
1•deviscool•8m ago•1 comments

CorvinOS – a self-hosted agentic OS which enforce EU AI Act 2026 by design

https://github.com/CorvinLabs/CorvinOS
1•shumway•8m ago•0 comments

Show HN: Self Hosted Soap->REST/REST->Soap Gateway with Contract-Drift Detection

https://sentinel-av.in/products/soap-rest-gateway/starter/
1•vineet005•8m ago•0 comments

Chrome 150 breaks legacy -WebKit-box layouts

https://issues.chromium.org/issues/530131010
1•mansarip•9m ago•0 comments

Show HN: Handpicked AI jobs from 170 AI companies, sourced from career pages

https://job.careers/
1•lanmao•9m ago•0 comments

Show HN: An assertion library for E2E testing and real user monitoring

https://github.com/Faultsense/faultsense-agent
6•mitchm•12m ago•1 comments

I got sick of paying massive amounts to TinyPng

https://imgpipeline.com/
1•janalbertmentz•15m ago•0 comments

Distrofighter: The Linux distro and desktop brawler

https://distrofighter.com/
2•lorenzohess•16m ago•0 comments

Ask HN: Is it just me or does Claude / Sonnet 5 sound condescending recently?

1•alentred•18m ago•1 comments

How Did the Silk Road Work? [video]

https://www.youtube.com/watch?v=9VMTm6H7DrY
1•hakkikonu•20m ago•0 comments

Behind the scenes with the Midjourney scanner [video]

https://www.youtube.com/watch?v=4nzzpUKhj1M
3•Semkas•21m ago•0 comments

Simulating Tradeoffs in AI Organisation

1•rando77•22m ago•0 comments

Hackers shoveled snow for company, were rewarded with network admin access

https://www.theregister.com/security/2026/07/02/hackers-shoveled-snow-for-company-were-rewarded-w...
3•ike_usawa•22m ago•0 comments

Show HN: SlideShow – A cross-platform full-screen slideshow that is os-aware

https://github.com/ftaisdeal/cross-platform-slideshow
2•ftaisdeal•28m ago•0 comments

Meta's Zuckerberg says AI agent tech progressing slower than expected

https://finance.yahoo.com/technology/ai/articles/exclusive-zuckerberg-says-ai-agent-201123441.html
2•ssram•29m ago•1 comments

Claude Code Dynamic Island on macOS

https://pookify.vercel.app/
3•eyadh•30m ago•1 comments

War Crimes Archive

https://archivegenocide.com/
7•TomeveilSeeker•30m ago•0 comments

Learn the Knowledge of London

https://tfl.gov.uk/info-for/taxis-and-private-hire/licensing/learn-the-knowledge-of-london
2•haunter•31m ago•0 comments

ElevenLabs at $22B: no new money, just employees selling shares

https://freemalta.com/hub/library/elevenlabs-is-worth-22-billion-no-new-money-came-in
2•ilhaniremyuce•32m ago•0 comments

Atomic Force Microscope video, steel etching, bacteria – Applied Science

https://www.youtube.com/watch?v=DyIQkqBXhS0
3•mhb•34m ago•0 comments

Show HN: Foundera – AI-powered founder and startup feedback platform

https://foundera.app/
2•toyji•35m ago•0 comments

Codex vs. Claude Code

https://www.augmentedswe.com/p/codex-vs-claude-code-2c0
2•wordsaboutcode•35m ago•0 comments

Robotic bird targets drones' biggest aerodynamic shortcoming

https://newatlas.com/drones/robotic-bird-drones-aerodynamic-problem-rmit/
3•breve•38m ago•0 comments

Semantic Manifest – An open specification for AI crawler ingestion

https://github.com/CKL75/semantic-manifest-specification
1•CKL75•40m ago•0 comments