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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!

Show HN: Get v2.0

https://github.com/Water-Run/get/releases/tag/v2.0
1•linzhangrun•35s ago•0 comments

The Russian who invented semiconductors 25 years before the USA

https://www.semidoped.com/p/til-the-man-who-invented-the-future
2•johncole•5m ago•0 comments

2ez.sol Its 1999 again Free games. 2ez

https://2ez.sol.site
1•sgspace•13m ago•1 comments

Grid: E2EE Alternative to Life360

https://mygrid.app
1•thebiblelover7•18m ago•1 comments

Field of clones: How horse replicas came to dominate polo

https://knowablemagazine.org/content/article/technology/2026/cloned-polo-horses
4•gscott•20m ago•0 comments

Lego launches 12,060-piece Sagrada Família – its biggest ever set

https://www.cnn.com/2026/06/05/style/lego-sagrada-familia-gaudi-scli-intl
1•giuliomagnifico•22m ago•0 comments

Show HN: LLM for Dummies

https://ronreiter.github.io/llm-for-dummies/
1•ronreiter•23m ago•0 comments

Show HN: TakoVM – Isolated model and tool execution used by enterprises

https://github.com/las7/TakoVM
1•sakuraiben•24m ago•0 comments

The gamers taking on the industry to stop it switching off games

https://www.bbc.com/news/articles/c8e8e7g0r82o
1•breve•24m ago•0 comments

Ukrainian drones target St Petersburg in attack Russia calls 'unprecedented'

https://www.bbc.com/news/articles/cg7498kz808o
3•MilnerRoute•24m ago•1 comments

Show HN: Ext-Infer – Native LLM Inference and Embeddings for PHP

https://infer.displace.tech
1•eamann•27m ago•0 comments

Agent in 50 Lines

https://minimal-agent.com/
3•andai•31m ago•1 comments

The oldest surviving animated feature film at 100

https://www.bbc.com/culture/article/20260603-how-a-26-year-old-german-woman-made-the-worlds-oldes...
2•1659447091•31m ago•1 comments

New Biochemistry-Based Metabolic Protocol Seeking Alpha Concierge Members

1•joshwprinceton•33m ago•0 comments

NASA interested in Hubble reboost if costs can be reduced

https://spacenews.com/nasa-interested-in-hubble-reboost-if-costs-can-be-reduced/
2•defrost•49m ago•0 comments

How Liminalism Became the Defining Aesthetic of Our Time

https://hyperallergic.com/how-liminalism-became-the-defining-aesthetic-of-our-time/
4•zeech•54m ago•0 comments

Show HN: Oproxy – inspect and modify network traffic from the browser

https://github.com/sauravrao637/oproxy
3•sauravrao637•55m ago•1 comments

The Demon of the Gaps

https://surfingcomplexity.blog/2026/06/06/the-demon-of-the-gaps/
6•azhenley•1h ago•2 comments

Gnome OS Nightly

https://os.gnome.org
3•shaunpud•1h ago•0 comments

TSMC CEO: I envy their 80% gross margins, but I would never do that

https://www.thestreet.com/investing/stocks/tsmc-taiwan-semiconductor-ceo-sends-blunt-message-to-m...
3•teleforce•1h ago•0 comments

ForgeLite-The Most Minimalized Git

2•david3289•1h ago•0 comments

I made this word find game

https://word.1200tech.com
4•bosco_camera•1h ago•0 comments

Tokenomics: Quantifying Where Tokens Are Used in Agentic Software Engineering

https://arxiv.org/abs/2601.14470
21•Anon84•1h ago•2 comments

Gaia2: Benchmarking LLM Agents on Dynamic and Asynchronous Environments

https://arxiv.org/abs/2602.11964
2•Anon84•1h ago•0 comments

Bitcoin is cratering, but there is a new Wall Street crypto HYPE

https://www.cnbc.com/2026/06/06/bitcoin-price-crash-crypto-hype-hyperliquid-etfs.html
4•KnuthIsGod•1h ago•0 comments

HateArena – A free and open source arena shooter

https://github.com/hatearena/hate
5•death_eternal•1h ago•0 comments

Ask HN: Where do you get the latest updates about AI?

3•d0able•1h ago•1 comments

An Ohio Valley 100k-Watt FM Signal Is Severed in Broad Daylight – Radio World

https://www.radioworld.com/news-and-business/headlines/an-ohio-valley-100000-watt-fm-signal-is-se...
52•pkaeding•1h ago•44 comments

ICE detainees across the US describe medical neglect

https://apnews.com/article/ice-immigration-detention-medical-neglect-dhs-32c3fbeef0c44dfb02fcab89...
5•petethomas•1h ago•0 comments

Super El Niño Events

https://en.wikipedia.org/wiki/Super_El_Ni%C3%B1o_events
4•rolph•1h ago•0 comments