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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•9mo 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!

Java UI in 2026: an overview of current frameworks and approaches

https://robintegg.com/2026/02/08/java-ui-in-2026-the-complete-guide.html
1•pjmlp•1m ago•0 comments

EU and India launch talks on Horizon Europe association

https://research-and-innovation.ec.europa.eu/news/all-research-and-innovation-news/eu-and-india-l...
1•saubeidl•1m ago•0 comments

Agent systems fail when orchestration is underspecified

https://bnjam.dev/posts/agent-orchestration/agent-systems-fail-quietly.html
1•bnjam•3m ago•0 comments

Every Way to Export ChatGPT Conversations

https://chromewebstore.google.com/detail/export-chatgpt-conversati/ploaaddkflkapjfbfapmkmkefigedefp
1•backrun•3m ago•1 comments

Wireit: Smarter and more efficient NPM run

https://github.com/google/wireit
1•AbuAssar•4m ago•0 comments

Show HN: ArkWatch – Uptime monitoring with zero dependencies

1•arkforge•5m ago•0 comments

Show HN: Forge – 3MB Rust binary that coordinates multi-AI coding agents via MCP

https://github.com/nxtg-ai/forge-orchestrator
1•vipdestiny•6m ago•0 comments

Modular Monoliths and Other Facepalms – Kevlin Henney – NDC London 2026

https://www.youtube.com/watch?v=4qfsmE11Ejo
2•aivarsk•7m ago•0 comments

MicroORM: TypeScript ORM Using Data Mapper, Unit of Work, Identity Map Patterns

https://github.com/mikro-orm/mikro-orm
1•thunderbong•11m ago•0 comments

Show HN: Auto Formatting PDF generator web tool for Travelers

https://cheaptrip.online/planner.html
1•Divyeshhn•11m ago•1 comments

A UK-focused job board for account managers – AccountManagerJobs.co.uk

https://accountmanagerjobs.co.uk/
1•figoshi•12m ago•1 comments

If You Could Go Faster Than Light, Time Wouldn't Run Backward at All

https://pajuhaan.medium.com/if-you-could-go-faster-than-light-time-wouldnt-run-backward-at-all-9f...
1•pajuhaan•13m ago•1 comments

P2P crypto exchange development company

1•sonniya•16m ago•0 comments

Building a Hardware Accelerated Live TV Player from Scratch in C with Vulkan

https://blog.jaysmito.dev/blog/03-live-tv-inside-vulkan/
1•jmax01•18m ago•0 comments

Show HN: Black Hole Universe Simulator (seeking collaborators)

https://github.com/pongtse822-rgb/V6-Black-Hole-Universe
1•pongtse822•23m ago•1 comments

Show HN: Freeciv 3D with hex map tiles and WebGPU renderer

https://github.com/freecivworld/freecivworld
2•roschdal•26m ago•0 comments

Text classification with Python 3.14's ZSTD module

https://maxhalford.github.io/blog/text-classification-zstd/
1•alexmolas•30m ago•0 comments

Castle Engine: Upgrade to GTK 3

https://castle-engine.io/wp/2026/02/09/upgrade-to-gtk-3/
1•mariuz•34m ago•0 comments

SETI program is chasing down its final 100 signals

https://www.space.com/space-exploration/search-for-life/this-seti-program-is-chasing-down-its-fin...
2•belter•35m ago•0 comments

Portugal builds Europe's first dedicated drone carrier

https://www.euronews.com/2026/01/29/portugal-builds-europes-first-dedicated-drone-carrier-d-joao-ii
1•belter•36m ago•0 comments

Poison2

https://rnsaffn.com/poison2/
1•thunderbong•38m ago•0 comments

ntsc-rs, open-source video effect which emulates analog TV and VHS artifacts

https://ntsc.rs/
1•QuantumNomad_•38m ago•0 comments

European Alternatives to American Apps

https://blog.uniqkey.eu/resources/european-alternatives/
2•utsavchopra•39m ago•2 comments

1D Cellular Automata Playground

https://paraschopra.github.io/1d-ca/
1•paraschopra•42m ago•0 comments

Discussion: Seedance-style AI video generation workflows

1•littlepp•42m ago•0 comments

A read-only IMAP client for Wear OS

https://github.com/cmader/MailReader
2•TrevorOkmonic•43m ago•0 comments

Iraq War Oil Oped

https://www.cnn.com/2013/03/19/opinion/iraq-war-oil-juhasz
1•marysminefnuf•43m ago•0 comments

Ahead-of-Time Automatic Differentiation in Python

https://github.com/Eshaancoding/ad
2•eshaanb•44m ago•1 comments

Reading Buffer statistics in EXPLAIN output

https://boringsql.com/posts/explain-buffers/
1•radimm•45m ago•0 comments

Subtle thermal factors I didn't expect when testing high-power LEDs

2•kashinfilm•48m ago•0 comments