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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!

Plants Get Wearables to Track Their Health

https://now.tufts.edu/2026/07/08/plants-get-wearables-track-their-health
1•giuliomagnifico•5m ago•0 comments

Building Synapse offline-first with Loro

https://dhovart.tngl.sh/synapse-blog/loro-offline-first/
1•denzen•6m ago•0 comments

AI drove Shopify back to clean code

https://www.theregister.com/devops/2026/07/25/how-ai-drove-shopify-back-to-clean-code/5277901
1•sbulaev•7m ago•0 comments

The Future of American Defense – Y Combinator [video]

https://www.youtube.com/shorts/iOeW40N-1VI
1•xyzsparetimexyz•11m ago•0 comments

No Stack Overflow, No Autocomplete: What Coding Felt Like in the 80s

https://comuniq.xyz/post?t=1439
4•01-_-•16m ago•2 comments

Upd.dev: Free Git hosting, including the freedom to vibe code

https://upd.dev
4•Xlab•20m ago•0 comments

Show HN: A platformer video game using visual representations of functions

https://function-platformer.vercel.app/
1•dbagr•21m ago•0 comments

When the AI bubble bursts, silver is Eric Sprott's play

https://stockhead.com.au/resources/when-the-ai-bubble-bursts-silver-is-eric-sprotts-play/
1•parallel_shell•21m ago•0 comments

Show HN: Sip-exporter – passive eBPF-based SIP/RTP monitoring with Prometheus

https://github.com/aibudaevv/sip-exporter
1•aibudaev•25m ago•0 comments

PaperScreen: Give your Mac's display a softer, paper-like feel

https://github.com/Bearbobs/PaperScreen
1•anuj0070•29m ago•0 comments

Systemd Linger

https://etbe.coker.com.au/2026/07/24/systemd-linger/
2•edward•31m ago•0 comments

Genesis Mission Overview

https://github.com/donutloop/donutloop-genesis/blob/main/README.md
1•donutloop•33m ago•0 comments

France and Spain wildfires: more than 300k people displaced

https://www.cnn.com/2026/07/26/world/live-news/france-spain-wildfires-evacuations
4•tosh•33m ago•0 comments

As Burlington reviews data centre plan, councillors reject moratorium

https://www.cbc.ca/news/canada/hamilton/data-centre-moratorium-burlington-9.7282901
1•01-_-•35m ago•0 comments

Against the System: Rise of the Robots (2001)

https://phrack.org/issues/57/10#article
1•negura•36m ago•0 comments

Show HN: Termic – desktop app for running CLI coding agents (Claude Code, Codex)

https://termic.dev/
1•SimionBaws•37m ago•0 comments

Show HN: Cfbench – A lightweight native CLI for Cloudflare speed tests

https://github.com/fcendesu/cfbench
1•fcen•38m ago•0 comments

Corner Chess

https://cs.nyu.edu/~shasha/drecco/games/2016/cornerchess/
1•tosh•40m ago•0 comments

Emacs Writing Machine

https://chainsawriot.com/postmannheim/2026/07/25/writeredeck.html
1•birdculture•40m ago•0 comments

Robots programmed by kids to speak their Indigenous languages

https://www.npr.org/2026/07/26/nx-s1-5825798/robot-speaks-endangered-native-american-languages
2•defrost•41m ago•1 comments

Apertus 1.5, Swiss open-weight, open-source, open training data model

https://apertus-ai.org/articles/2026-07-apertus-1-5/
1•flaburgan•42m ago•1 comments

Interactive 3D Dice Roller with Custom Physics and Shaders

https://ttrpg.dies.kmcprizmquest.dev/
1•Radversalo•52m ago•0 comments

How to be useful as a software architect

https://swizec.com/blog/how-to-be-useful-as-a-software-architect
2•meetpateltech•55m ago•0 comments

Elevated Errors for Opus 5

https://status.claude.com/incidents/zftg3gqkmv18
2•TimCTRL•56m ago•0 comments

I built a jav data API, need honest feedback

1•javinfo•57m ago•0 comments

Show HN: OpenStrap – use a WHOOP 4.0 band without a subscription

https://openstrap.github.io/edge/
1•abdulsaheel123•1h ago•0 comments

Show HN: Tawrida – Global Trade Tools – Export-Document Generators

https://tawrida.xyz/tools
2•m-zakarya•1h ago•0 comments

Anthropic should learn from those cotton-picking socialists

https://asteriskmag.com/issues/15/rust-and-boll
2•maxall4•1h ago•0 comments

Practice your YC interview against Garry Tan's gstack specialists, on a meeting [video]

https://www.youtube.com/watch?v=PMiIytmoEuk
4•anand_pattern•1h ago•1 comments

High Volume Transaction Processing Without Concurrency Control (1997)

https://www.researchgate.net/publication/2310700_High_Volume_Transaction_Processing_Without_Concu...
1•tosh•1h ago•0 comments