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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!

Ask HN: Have LLMs Plateaued?

1•leandrobon•1m ago•0 comments

Amazon completes $50B investment in OpenAI

https://www.ft.com/content/8ae9e6e4-a53c-44da-8e7d-c9d81f0df4b9
1•sbulaev•4m ago•0 comments

I Synthesized a Chalcone into a Flavonol in Six Days

https://medium.com/whatsnextwray/how-i-synthesized-a-chalcone-into-a-flavonol-in-six-days-518595b...
1•raynchad•6m ago•0 comments

AI Can Design Parts but It Can't Do This [video]

https://www.youtube.com/watch?v=K99LtENdQjA
1•boringperson•13m ago•0 comments

A mystery virus started killing horses. Then humans

https://www.theguardian.com/science/2026/aug/03/hendra-virus-australia-sentinels-book-extract-ani...
2•edfsadfer•15m ago•0 comments

Zenith – AI that parses 2D blueprints into instant quote breakdowns

https://zenithquoting.com/
1•MalikCarey•16m ago•0 comments

Ripchaser – Sports card checklist and parallel mapping tool

https://ripchaser.com/
1•engraveprice•20m ago•0 comments

Show HN: OpenTalking – Privately deployable real-time AI avatar

https://github.com/datascale-ai/opentalking
1•xx123122•20m ago•0 comments

Qwen3.8-Max

https://twitter.com/Alibaba_Qwen/status/2084093402967396594
5•logickkk1•21m ago•0 comments

State of Exposure Report July'2026 by EchelonGraph

1•gladiator291288•21m ago•0 comments

Scratch Muppet fnaf fangame I can't find anymore

1•jasonTrowbridge•22m ago•0 comments

Melatonin vs. magnesium: Which is better for your sleep?

https://www.washingtonpost.com/wellness/2026/08/02/melatonin-vs-magnesium-which-is-better-your-sl...
3•wslh•22m ago•1 comments

Controlling Your Environment Makes You Happy (2000)

https://www.joelonsoftware.com/2000/04/10/controlling-your-environment-makes-you-happy/
1•brazukadev•24m ago•0 comments

Qwen UI Agent

https://tongyi-mai.github.io/Qwen-UI-Agent/
2•shay_ker•27m ago•0 comments

Louis Theroux Interview [video]

https://www.youtube.com/watch?v=kdxgsCrEDY8
1•consumer451•31m ago•0 comments

Graph Engineering with Claude. What It Is and How to Use It

https://x.com/Mahaximus_/article/2082442856417956173
1•heftykoo•34m ago•0 comments

Show HN: A company brain AI agents check before acting

https://github.com/gnt-ai/gnt
3•lukaadzic•36m ago•2 comments

Your Coding Agent Is Playing Tetris Badly

https://zhenyi.gibber.blog/your-coding-agent-is-playing-tetris-badly
2•zhenyi•38m ago•0 comments

Eve Marketing Team Template

https://github.com/vercel-labs/marketing-team-eve-template
1•flashbrew•39m ago•0 comments

Trail – signed OpenTelemetry spans for AI agents

https://github.com/varmax2511/trail
1•varmax2511•40m ago•0 comments

Firstmate: Talk to one agent. Ship with a crew

https://github.com/kunchenguid/firstmate
2•shikharbhardwaj•43m ago•0 comments

Decrease in Runway Friction Associated with Increasing Rainfall Intensity [pdf]

https://www.ntsb.gov/investigations/AccidentReports/Reports/AIR2604.pdf
3•Jimmc414•46m ago•0 comments

RFC 9851: TLS 1.2 is in Feature Freeze

https://www.rfc-editor.org/rfc/rfc9851.html
10•Jimmc414•48m ago•1 comments

Deep Space Station 14 (DSS-14) Azimuth Over-Rotation Mishap [pdf]

https://www.nasa.gov/wp-content/uploads/2026/06/dss14-mishap-investigation-board-report-signed-fi...
2•Jimmc414•48m ago•0 comments

OpenUK Wants Britain to Stop Giving Away Open Source Creations

https://itsfoss.com/news/british-flavored-linux-foundation-proposal/
3•ivewonyoung•48m ago•0 comments

Egpu for Mac

https://docs.tinygrad.org/tinygpu/
2•kristianp•51m ago•0 comments

Capital One says it closed Trump Organization accounts

https://www.npr.org/2026/08/02/g-s1-136834/capital-one-trump-bank-anti-money-laundering
9•rdudekul•55m ago•1 comments

Deeby Adventures – a storage engine comic

https://adventures.fredyang.com/
2•yuek•55m ago•0 comments

Show HN: Project ESPAÑOL: Find level-appropriate Spanish-language poems

https://dmerullo.github.io/project-espanol/
3•us-merul•59m ago•0 comments

Europe makes trillion-euro bet to revive its battered industry

https://www.reuters.com/commentary/reuters-open-interest/europe-makes-trillion-euro-bet-revive-it...
4•JumpCrisscross•1h ago•0 comments