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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!

Latent Thought Flows with Text Compression

https://latent-thought-flows.vercel.app/
1•sebg•23s ago•0 comments

GitHub API Outage

https://www.githubstatus.com/incidents/gxycch3076xk
2•jfirebaugh•1m ago•0 comments

SpaceX Starship Flight 13 scrubbed

https://x.com/i/broadcasts/1MKgNNXAZdmxL
1•elinear•2m ago•1 comments

Show HN: Ferritin, a new front end for Rust docs, built on rustdoc JSON

https://ferritin.rs
1•jbr•3m ago•0 comments

InfiniWolf: A Procedural Map Generator for Wolf3d

https://github.com/voidnullvalue/InfiniWolf
1•voidnullvalue•4m ago•0 comments

Chrome is prototyping HTML client-side includes

1•dfabulich•5m ago•0 comments

Show HN: Moltshit.com – An Imageboard for AI Agents

https://moltshit.com
1•jetbalsa•5m ago•0 comments

He Mined 300 Bitcoin, Then Sold the Computer for $200 [video]

https://www.youtube.com/watch?v=XHeMsXDyw2A
1•pierres7•6m ago•0 comments

The Work of Helping A.I. Destroy Work

https://www.nytimes.com/2026/07/10/business/ai-white-collar-jobs.html
2•reaperducer•9m ago•0 comments

We Stopped Selling to Humans

https://www.trybluemagma.com/blog/we-stopped-selling-to-humans-to-beat-vanta
1•ajouffray•9m ago•0 comments

Run agents on GitHub and Linear issues

https://lanes.sh/use-cases/run-agents-on-github-and-linear-issues
3•s-xyz•10m ago•0 comments

Battery packs: Let's talk about crates, baby

https://smallcultfollowing.com/babysteps/blog/2026/07/15/battery-packs/
2•MeetingsBrowser•11m ago•0 comments

Language Agnostic Module Representation

https://about.a3rn.com/blog/lamp-language-agnostic-module-representation/
2•a3rn•12m ago•0 comments

Retired EV Batteries Get Second Life on the Grid

https://spectrum.ieee.org/second-life-ev-batteries
2•sohkamyung•14m ago•0 comments

Trump's Crypto Bank Built an Iran Sanctions Loophole

https://www.disruptionbanking.com/2026/07/16/trumps-crypto-bank-built-an-iran-sanctions-loophole-...
3•bmcdresson•14m ago•0 comments

The Short-Selling Hedge Fund Manager Walks Free While Accomplice Sits in Prison

https://www.disruptionbanking.com/2026/07/16/the-short-selling-hedge-fund-manager-walking-free-wh...
3•bmcdresson•15m ago•0 comments

Cerebras discontinue its free tier plan

https://www.cerebras.ai/pricing
4•TheJCDenton•16m ago•2 comments

The Manhattan prosecutor fighting the trade in stolen antiquities

https://www.ft.com/content/84ee6da5-41c8-4372-b166-b10046d914d8
4•Jtsummers•18m ago•0 comments

Users Are Humans in Some Context

https://minsukchang.com/blog/2026-07-15-human-in-context.md.html
2•sebg•19m ago•0 comments

Learning from experience instead of curated datasets

https://oaklab.ai/posts/learning-from-experience-instead-of-curated-datasets
2•sebg•26m ago•0 comments

I Made a YouTube Advert Destroyer

https://supercool.gumroad.com/l/YoutubeAdvertDestroyer
1•DemiKone2•30m ago•2 comments

My car's OTA update broke Android Auto, and it's a indictment of modern software

https://imdanielkendall.com/the-great-software-regress-how-move-fast-and-break-things-broke-our-l...
27•Expletive4138•30m ago•9 comments

SpaceX Starship Flight 13 – Everyday Astronaut stream [video]

https://www.youtube.com/watch?v=2r31rEkUUaA
5•losvedir•30m ago•1 comments

Show HN: Mojibake – a low-level Unicode library written in C

https://mojibake.zaerl.com/
6•program•31m ago•0 comments

The Free and Willing Algorithm

https://yelluwcomedy.substack.com/p/the-free-and-willing-algorithm
2•Burnsedia•32m ago•0 comments

Trump Media to sell high-speed access to president's social media posts

https://www.ft.com/content/32db576f-4f53-47d2-b00c-2ad4e906952c
6•pseudolus•32m ago•1 comments

The Little Book of Reinforcement Learning

https://github.com/alxndrTL/little-book-rl/
6•mustaphah•33m ago•0 comments

Tldraw Offline

https://offline.tldraw.com/
2•Yenrabbit•34m ago•1 comments

I built a privacy-first crypto portfolio tracker after the Ledger breach

https://coinwatch.space/en
2•ciferulo•35m ago•0 comments

Production and Reliability Series

https://yusufaytas.com/series/production-and-reliability
7•yusufaytas•37m ago•1 comments