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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•8mo 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!

Gabriel – turn messy qualitative corpora into analysis-ready datasets

https://github.com/openai/GABRIEL
1•michaelsbradley•34s ago•0 comments

Show HN: I reviewed about 300 academic papers of 2025 to write a book on startup

1•albertoasquer•1m ago•0 comments

Show HN: Founder-OS: Open Sourcing how I automate my company

https://github.com/cloudrepo-io/founder-os
1•256BitChris•4m ago•0 comments

Self-Contained Map Component for Swift with Multiple, Aggregated, Custom Markers

https://github.com/LittleGreenViper/BigJuJuMap
1•mooreds•4m ago•0 comments

The Riemann Hypothesis: Past, Present and a Letter Through Time

https://arxiv.org/abs/2602.04022
1•stared•4m ago•0 comments

Show HN: Savior – Prevent silent form data loss in the browser

https://github.com/Pepp38/Savior
1•Pepp38•6m ago•0 comments

OpenAI and Ginkgo Bioworks (YC S14) used GPT5 to lower protein production costs

https://openai.com/index/gpt-5-lowers-protein-synthesis-cost/
1•snitty•11m ago•0 comments

PPE Stockpile Degradation

https://chillphysicsenjoyer.substack.com/p/ppe-stockpile-degradation
1•crescit_eundo•11m ago•0 comments

What's the hardest thing about tracking your validated learnings?

1•localeyes•12m ago•0 comments

Show HN: Atomic Afterglow – Local-first audio analysis (Librosa/Streamlit)

https://atomic-afterglow.streamlit.app/
1•phasesequencer•13m ago•0 comments

ICE and CBP's Face-Recognition App Can't Verify Who People Are

https://www.wired.com/story/cbp-ice-dhs-mobile-fortify-face-recognition-verify-identity/
2•cdrnsf•14m ago•0 comments

Spotify, a Major Audiobook Provider, Will Soon Offer Physical Books

https://www.wsj.com/business/media/spotify-a-major-audiobook-provider-will-soon-offer-physical-bo...
2•bookofjoe•14m ago•1 comments

Distributed ML training through Web Cams

https://www.sarthakmangla.com/blog/wccl
1•amrrs•15m ago•0 comments

Unlocking a global audience with auto dubbing

https://blog.youtube/news-and-events/youtube-auto-dubbing-expressive-speech/
2•ingve•18m ago•0 comments

Ask HN: Will Crypto Currencies survive past this market downturn?

1•halamadrid•20m ago•2 comments

RMA – Compile Semgrep rules to native Rust/Tree-sitter matchers

https://github.com/bumahkib7/rust-monorepo-analyzer
1•bumahkib7•21m ago•1 comments

AI coding gap: Why senior devs are getting faster and juniors spin their wheels

https://www.zdnet.com/article/why-gen-ai-boosts-productivity-some-developers-not-others/
2•CrankyBear•22m ago•0 comments

Outlawed executable code encoded in a prime number

https://www.cs.cmu.edu/~dst/DeCSS/Gallery/Stego/illegal-primes.html
2•nucatus•22m ago•0 comments

How do you deal with SEO nowadays?

3•jackota•23m ago•6 comments

My bird has a pet hamster

https://brooke.substack.com/p/my-bird-has-a-pet-hamster
1•surprisetalk•24m ago•0 comments

The Gap Between Machines and Citizens

https://llm-politics.foaster.ai/
1•surprisetalk•25m ago•0 comments

Efficient near-telomere-to-telomere assembly of nanopore simplex reads

https://www.nature.com/articles/s41586-026-10105-6
2•bookofjoe•28m ago•0 comments

MatPy – Pure Python linear algebra library with ODE solvers

https://github.com/njryan-boou/matpy
1•njryan20051•28m ago•0 comments

Starlink fuels SpaceX growth with potential phone, more internet services

https://www.reuters.com/business/media-telecom/starlink-fuels-spacex-growth-with-potential-phone-...
2•TMWNN•31m ago•0 comments

OpenClaw (MoltBot) as a Service on DigitalOcean

https://www.digitalocean.com/blog/openclaw-digitalocean-app-platform
1•perelin•32m ago•0 comments

Show HN: Linear MCP Fast – 10x faster Linear MCP reads from local cache

https://github.com/everything-chalna/linear-mcp-fast
1•liabilityuk0•34m ago•0 comments

My Issues with ProtonMail

https://tildeweb.nl/~michiel/protonmail-issues.html
2•roywashere•38m ago•0 comments

Jane Street Blog – What if writing tests was a joyful experience?

https://blog.janestreet.com/the-joy-of-expect-tests/
2•ryanhn•39m ago•1 comments

I accidentally became a FOSS maintainer

https://www.hughrundle.net/i-accidentally-became-a-foss-maintainer-and-all-i-got-was-this-lousy-n...
1•cratermoon•39m ago•0 comments

What Every Programmer Should Know About Memory [pdf]

https://people.freebsd.org/~lstewart/articles/cpumemory.pdf
2•sebg•40m ago•0 comments