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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!

Most security keys ship without a PIN, and websites rarely ask

https://www.notebookcheck.net/Most-security-keys-ship-without-a-PIN-and-websites-rarely-ask.13596...
1•yread•36s ago•0 comments

Show HN: A multiplayer play-money terminal casino for downtime

https://anteroom.johnramsey.com/
1•jramsey27•4m ago•0 comments

Microsoft never learns, IT admins rage as a new OneDrive app invades Windows 11

https://www.windowslatest.com/2026/08/04/microsoft-never-learns-it-admins-rage-as-a-new-onedrive-...
1•latein•5m ago•0 comments

AI Agents for Logistics, Pitfall?

1•srguarapo•7m ago•0 comments

Show HN: An open-weight background removal model for difficult images

https://withoutbg.com/open-model
1•kocabiyik•10m ago•0 comments

Out-of-court settlement between Amiga and Hyperion is publicly available

https://amiga-news.de/en/news/AN-2026-08-00028-EN.html
2•doener•13m ago•0 comments

Yemen's Houthis say they attacked Saudi oil tanker in Red Sea

https://www.reuters.com/world/middle-east/yemens-houthis-say-they-attacked-saudi-oil-tanker-red-s...
1•mapping365•15m ago•0 comments

Man arrested for Grim Reaper costume on hospital roof and staring at patients

https://www.mirror.co.uk/news/uk-news/hospital-grim-reaper-man-arrested-37511832
2•chistev•15m ago•1 comments

CtrlVibe AI Keypad – An OpenAI Micro Alternative for AI Workflows (Crowdfunding)

https://www.cnx-software.com/2026/08/05/ctrlvibe-ai-console-keypad-an-openai-codex-micro-alternat...
1•giuliomagnifico•18m ago•0 comments

OpenAI, Anthropic AI Models Breached Systems During UK Safety Tests

https://www.bloomberg.com/news/articles/2026-08-04/openai-says-models-breached-boundaries-during-...
3•sbulaev•24m ago•0 comments

Mach-1 Additive, a 35B model that can inference without multiplying

https://xcancel.com/antibot/captcha
1•imtany•25m ago•0 comments

City Heat Field

https://city-heatmap-online.vercel.app/
2•altilunium•28m ago•1 comments

SpaceX plans to become a mobile carrier

https://www.theverge.com/science/975480/spacex-mobile-terrestrial-cellphone-company
3•BlueBerry2001•29m ago•2 comments

Run full-blown macOS on iPadOS 16

https://github.com/nfzerox/VirtualMacOniPad
1•71bw•30m ago•0 comments

Making difficulty curves in games

http://www.davetech.co.uk/difficultycurves
1•hakkikonu•32m ago•0 comments

What Is Cloud.microsoft?

https://support.microsoft.com/en-us/office/what-is-cloud-microsoft
1•iso1631•36m ago•1 comments

The Depths She'll Reach (2021)

https://thedepths.longlead.com/
1•Thunder_rumbles•36m ago•0 comments

How HN: Argus – open-source security scanner with MCP

https://github.com/argus-code-scanning/argus-codescan-mcp
1•Gabrielokiri•37m ago•0 comments

Companies once tied to Assad kept winning UN contracts under Syria's new rulers

https://www.icij.org/investigations/damascus-dossier/companies-once-tied-to-assad-kept-winning-un...
2•robtherobber•41m ago•0 comments

Episode 2: Trump Must Admit Defeat in Iran [video]

https://www.youtube.com/watch?v=nRAtD7iAgwY
3•hebelehubele•43m ago•0 comments

A creature that the internet is raising together

https://canwecooperate.com
1•sheepyellow•45m ago•0 comments

The Economist Problem and AI

https://pithandpip.com/blog/the-economist-problem-and-ai
1•maguay•46m ago•0 comments

Show HN: Systematic reporting in under an hour, not months

https://octigen.com/blog/posts/2026-08-04-systematic-reporting/
7•m_mueller•52m ago•0 comments

Helios: Decentralized Autonomous Collision Avoidance for Megaconstellations

https://github.com/kamilprochazka27-art/HELIOS
2•HELIOSDecentral•52m ago•0 comments

Show HN: TickerNotch: Live tickers and news in the MacBook notch

https://bitvibelabs.com/tickernotch/
2•BitVibeLabs•55m ago•0 comments

The software group Palantir paid just £2M in corporation tax in the UK in 2024

https://www.theguardian.com/technology/2026/aug/05/palantir-corporation-tax-uk-2024-accounting-pr...
19•igortru•55m ago•10 comments

Bitcoin BIP110 mandatory activation this Saturday, how game theory will unfold?

https://www.simondixon.com/blog/bip-110-the-spam-war-and-the-battle-nobody-wants-to-name-where-i-...
6•slavgoyim•56m ago•0 comments

OpenAI pays $3.2M to settle claims it discriminated against US workers

https://www.theguardian.com/us-news/2026/aug/04/openai-worker-discrimination-claims-settlement
5•igortru•57m ago•0 comments

The official draw.io MCP Server

https://github.com/jgraph/drawio-mcp
2•saikatsg•57m ago•0 comments

OpenAI and Anthropic models 'went rogue' during UK cybersecurity test

https://www.theguardian.com/technology/2026/aug/05/openai-anthropic-models-went-rogue-cybersecuri...
4•ablation•58m ago•0 comments