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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!

Own Your Weights

https://moai.studio/blog/posts/own-your-weights.html
1•ionwake•4m ago•0 comments

The Science Behind Why Soccer Players the 26 World Cup Are Cutting Their Socks

https://www.wired.com/story/the-science-behind-why-soccer-players-at-the-2026-world-cup-are-cutti...
2•susiecambria•4m ago•1 comments

Show HN: Convergo – plan/build review loops for coding agents

https://github.com/gomilesf/convergo
1•gomilesfd•4m ago•0 comments

Vought V-173

https://en.wikipedia.org/wiki/Vought_V-173
1•LorenDB•6m ago•0 comments

A teen social media ban is an admission of utter failure to govern online spaces

https://www.jamesrball.com/p/a-teen-social-media-ban-is-an-admission
1•cdrnsf•7m ago•0 comments

Show HN: I built an AI spritesheet generator for game developers

https://www.autosprite.io
1•autosprite•10m ago•0 comments

Desk-Pet – a local-first desktop pet powered by MiniCPM5

https://github.com/OpenBMB/MiniCPM-Desk-Pet
1•modinfo•10m ago•0 comments

Roast My New Creation

https://itsrilo.com
1•GeorgeChaplin•10m ago•1 comments

Torpenhow Hill

https://en.wikipedia.org/wiki/Torpenhow_Hill
1•nmstoker•11m ago•0 comments

Redis Patterns for Coding Agents

https://redis.antirez.com/
1•Jimmc414•12m ago•0 comments

GAO: DOE Is Prematurely Excluding Less Expensive Options for Nuclear Cleanup

https://www.gao.gov/products/gao-26-108193
2•Jimmc414•12m ago•0 comments

InfoWars: Emergency with Tim Heidecker [video]

https://www.youtube.com/watch?v=RX8-VGDK1vQ
2•embedding-shape•15m ago•0 comments

AI Giants Are Handing Out Tons of Free Computing Power to Grab Startup Share

https://www.wsj.com/tech/ai/ai-giants-are-handing-out-tons-of-free-computing-power-to-grab-startu...
2•Jimmc414•16m ago•0 comments

Activity-frames – give your AI agent eyes on your day

https://github.com/nossa-y/activity-frames
1•nossa-y•17m ago•0 comments

Closing the Verification Loop

https://thinkroom.kieranklaassen.com/d/njrS5TJhis
1•gmays•20m ago•0 comments

Microsoft 365 Copilot adoption is under 4.5%, only 1% use it weekly

https://www.windowslatest.com/2026/07/07/microsoft-365-copilot-adoption-is-under-4-5-after-3-year...
5•pier25•25m ago•5 comments

Implementing Standard.site on a Nonstandard Site

https://www.coryd.dev/posts/2026/implementing-standardsite-on-a-nonstandard-site
1•cdrnsf•29m ago•0 comments

JPMorgan, BofA and Others Explore Buying Card Network to Raise Debit-Card Fees

https://www.wsj.com/finance/banking/jpmorgan-bank-of-america-and-other-banks-explore-a-deal-to-sh...
5•JumpCrisscross•32m ago•4 comments

AI tool got me 12,000 new clicks from Google

https://twitter.com/fba/status/2074541708218351872
1•fba0•34m ago•2 comments

SpaceX Shares Stumble in Nasdaq-100 Debut

https://www.wsj.com/finance/stocks/spacex-shares-stumble-in-nasdaq-100-debut-9ec10565
8•JumpCrisscross•35m ago•1 comments

More Americans Are Moving Away from Flood Risk Than Toward It

https://www.bloomberg.com/news/articles/2026-06-24/flood-prone-us-counties-lose-residents-as-risk...
4•petethomas•37m ago•1 comments

The Case for Service-to-Service GraphQL

https://blog.larah.me/service-to-service-graphql/
2•markl42•38m ago•0 comments

Yggdrasil Agent: general purpose, parallel and adaptive reasoning depth

https://yggdrasilagent.com/
2•grasant•41m ago•0 comments

Show HN: OCR Buddy: local browser OCR for code, formulas (LaTeX) and tables

https://github.com/Fanfulla/OCR-buddy
2•Fanfulla•41m ago•0 comments

ASRock Rack Had One of the First Arm AGI Servers at Computex 2026 – ServeTheHome

https://www.servethehome.com/asrock-rack-had-one-of-the-first-arm-agi-servers-at-computex-2026/
5•rbanffy•45m ago•0 comments

Chinese AI models are gaining ground with U.S. companies as costs surge

https://www.cnbc.com/2026/07/07/chinese-ai-models-costs-us-openai-anthropic.html
5•herbertl•47m ago•0 comments

Show HN: Workflowy but Open Source

https://twitter.com/CameronPak/status/2074262605779124317
3•campak•50m ago•1 comments

Meta accused of discriminating against non-Chinese workers in latest layoff

https://old.reddit.com/r/cscareerquestions/comments/1uq4a92/meta_accused_of_discriminating_agains...
6•PieUser•50m ago•1 comments

IBM Expands Z17 and LinuxONE 5 Mainframe Lineups with Single Frame and Rackmount

https://www.servethehome.com/ibm-expands-z17-and-linuxone-5-mainframe-lineups-with-single-frame-a...
2•rbanffy•54m ago•0 comments

Choosing a Claude model and effort level in Claude Code

https://claude.com/blog/claude-model-and-effort-level-in-claude-code
4•geoffbp•56m ago•0 comments