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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!

Rise of the Supergrapes

https://aviewfrommytable.substack.com/p/rise-of-the-supergrapes
1•Khaine•1m ago•0 comments

Turn any image into an emoji mosaic

https://ripolas.org/image-from-emojis/
1•ripolas•2m ago•0 comments

Wdlist: Create and manage a personal list of Wikidata items

https://github.com/altilunium/wdlist
1•altilunium•3m ago•0 comments

If You Tax Them, Will They Leave?

https://www.theatlantic.com/economy/2026/01/california-wealth-tax-billionaire-migration/685779/
2•JumpCrisscross•3m ago•0 comments

Whats the Fuss about Clawdbot

1•mellisacodes•4m ago•0 comments

Ariel OS – a Rust RTOS for IoT Microcontrollers

https://www.cnx-software.com/2026/01/28/ariel-os-a-rust-rtos-for-iot-microcontrollers/
1•pantalaimon•4m ago•0 comments

Show HN: FavBox – local-first bookmark manager extension

https://github.com/dd3v/favbox
1•dm_0010•8m ago•0 comments

As we breach 1.5°C, we must replace temperature limits with clean-energy targets

https://www.nature.com/articles/d41586-026-00246-z
2•DamonHD•10m ago•0 comments

Show HN: I made a list of validated mobile app ideas

https://clonetheapp.vercel.app
1•hasibhaque•11m ago•0 comments

UEFIGame: "Win –> Boot, Lose –> Shutdown"

https://github.com/mycroftsnm/UEFIGame
1•todsacerdoti•11m ago•0 comments

Show HN: Flashy – Path-based reverse proxy for routing multiple services

https://github.com/Vic-Nas/Flashy
1•vicnas•14m ago•1 comments

Show HN: Klynda, a portfolio tracker focused on true performance (TWR/XIRR)

https://klynda.com/
1•daniel_builds•15m ago•0 comments

ICE and Palantir: US agents using health data to hunt illegal immigrants

https://www.bmj.com/content/392/bmj.s168
3•dberhane•15m ago•0 comments

Kimi K2.5 on 2 Mac Studios (<$20K) running at 24 TPS

https://twitter.com/alexocheema/status/2016404573917683754
1•alexandercheema•16m ago•0 comments

The World's First Nintendo Switch 2 Pro Controller with TMR Glide Sticks

https://www.youtube.com/watch?v=5G3HPQVh63w
1•rainings•16m ago•1 comments

Australia: Telstra warns older iPhones may be unable to connect to Triple Zero

https://www.abc.net.au/news/2026-01-28/telstra-warns-older-iphones-may-be-unable-to-connect-to-ne...
1•VP2262•20m ago•0 comments

Show HN: PolyMCP – Expose Python/TS functions as MCP tools easily

1•justvugg•20m ago•0 comments

Amazon laying off about 16,000 corporate workers in latest anti-bureaucracy push

https://www.cnbc.com/2026/01/28/amazon-layoffs-anti-bureaucracy-ai.html
3•bluedino•24m ago•1 comments

AI Kind of Sucks at Retouching, Study Says

https://www.thephoblographer.com/2026/01/27/ai-vs-human-retouching-the-quality-gap-is-bigger-than...
1•iamA_Austin•26m ago•1 comments

Claude Code Tips for Large Projects

https://ziva.sh/blogs/claude-code-tips-large-projects
2•OsrsNeedsf2P•26m ago•0 comments

Show HN: Camera Benchmark Tool – Fast, Clean Side-by-Side Camera Comparisons

https://xthe.com/camera-benchmark-tool/
1•xthe•26m ago•0 comments

Show HN: SHDL – A Minimal Hardware Description Language Built from Logic Gates

https://github.com/rafa-rrayes/SHDL
1•rafa_rrayes•27m ago•0 comments

Wire Messenger Is Down

https://status.wire.com/
1•rixrax•29m ago•0 comments

Particle is being acquired by Digi to power the next 40 years of IoT innovation

https://www.particle.io/blog/particle-is-being-acquired-by-digi-to-power-the-next-40-years-of-iot...
2•adunk•29m ago•0 comments

Introducing: React Best Practices

https://vercel.com/blog/introducing-react-best-practices
4•aierastack•29m ago•0 comments

Building a JavaScript runtime in one month

https://themackabu.dev/blog/js-in-one-month
1•begoon•29m ago•0 comments

The SQL Query Roadtrip: The Indexes

https://internals-for-interns.com/posts/postgres-indexes/
1•weinzierl•29m ago•0 comments

Turn your phone into a productivity tool

https://www.laurieherault.com/articles/turn-your-phone-into-a-productivity-tool
2•laurieherault•29m ago•1 comments

SoftBank in Talks to Invest Up to $30B More in OpenAI

https://www.wsj.com/tech/ai/softbank-in-talks-to-invest-up-to-30-billion-more-in-openai-8585dea3
2•JumpCrisscross•30m ago•0 comments

New Apple AirTag Teardown

https://bsky.app/profile/stacksmashing.bsky.social/post/3mdi6jbojr224
1•hasheddan•32m ago•0 comments