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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!

Nvidia CEO Says He Would Cut Off Buyers Who Build Unsafe AI

https://www.bloomberg.com/news/articles/2026-10-14/nvidia-ceo-says-he-would-cut-off-customers-who...
1•mfiguiere•35s ago•0 comments

Symmetries in Boolean Scan

https://ap29600.github.io/boolean_scans.html
2•g0xA52A2A•4m ago•0 comments

Show HN: Visual Scripting for Golang

https://symphony.q3k.app
1•jaitaiwan•4m ago•0 comments

The Double Headed Stack Allocator

https://blog.demofox.org/2026/10/03/the-double-headed-stack-allocator/
4•g0xA52A2A•4m ago•0 comments

Show HN: TowerPanic – a family party game on a small FastAPI realtime engine

https://towerpanic.com/
2•ms209495•9m ago•0 comments

Performance Goals That Survive the Roadmap

https://wakamoleguy.com/p/performance-goals-2026
1•wakamoleguy•11m ago•0 comments

Kalshi CEO says state-led oversight of US prediction markets would push them out

https://www.coindesk.com/policy/2026/10/14/kalshi-ceo-says-state-led-oversight-of-u-s-prediction-...
1•WaitWaitWha•12m ago•0 comments

Bipartisan coalition of states sues OpenAI over user safety

https://www.politico.com/news/2026/10/14/openai-user-safety-lawsuits-01119138
2•reasonableklout•13m ago•0 comments

State attorneys general seize on AI as Washington stalls

https://www.politico.com/news/2026/10/09/attorneys-general-ai-regulation-01112328
2•reasonableklout•13m ago•0 comments

DOJ announces charges in first nationwide tax fraud enforcement operation [video]

https://www.youtube.com/watch?v=s4sAQPXj0MU
2•Bender•15m ago•0 comments

Ask HN: How do you find good developer tools quickly?

1•ritualdevin•15m ago•0 comments

Show HN: Give (low vRAM) local sLLMs codebase-wide context with SQLite (attempt)

https://github.com/govindgcoder/arcKode
1•iamgovindg•15m ago•0 comments

US arrests Saudi employee of OpenAI for allegedly bugging its offices

https://www.ft.com/content/2c3b583a-3ddc-4920-a350-9698c119435c
1•Alien1Being•15m ago•0 comments

Saudi National Arrested for Installing Surreptitious Recording Device at OpenAI

https://www.justice.gov/opa/pr/saudi-national-arrested-installing-surreptitious-audio-recording-d...
1•Alien1Being•16m ago•0 comments

16-bit fully functional DIY magnetic core memory

https://www.youtube.com/watch?v=OJ1WYyO2jdY
1•oliculipolicula•20m ago•0 comments

For Walmart, Replacing Humans with Robots Is a Multibillion-Dollar Struggle

https://www.wsj.com/business/logistics/walmart-automation-robots-warehouses-65f016b2
1•gmays•25m ago•0 comments

Lgit: Source Control for the AI Era

https://nicobrenner.github.io/lossy-git/
1•nico•28m ago•0 comments

Show HN: I'll Call You Later, an interactive 3D browser short film

https://film.jashtechno.com
2•Jashwanth_13•30m ago•0 comments

Linux kernel devs drop obligatory confession of AI tool usage

https://www.theregister.com/ai-and-ml/2026/10/14/linux-kernel-devs-drop-obligatory-confession-of-...
2•ernsheong•30m ago•0 comments

Thinking Machines Ships Dimuon Optimizer

https://tinker-docs.thinkingmachines.ai/tinker/optimizers/
1•boldi•34m ago•0 comments

Management, LLMs, and the Modern Engineer

https://getsmall.xyz/post/cmv8v2ms60g87f70ls4g3zqsg
1•trezm•37m ago•0 comments

Ask HN: Only one link appearing on HN?

3•datas•38m ago•7 comments

Show HN: Single-server DDoS defense, no CDN – try to take it down

http://95.216.153.78
2•NuwanN•41m ago•1 comments

Magic: The Gathering Card Compiler

https://chiplis.com/ironsmith/
1•nicolas-siplis•42m ago•0 comments

Call for stories: human–AI collaboration in recent mathematics

https://terrytao.wordpress.com/2026/10/14/call-for-stories-human-ai-collaboration-in-recent-mathe...
1•smilelamp•44m ago•0 comments

How Oncolytic Virus Therapy Is Changing Cancer Treatment

https://www.cancerresearch.org/immunotherapy-by-treatment-types/oncolytic-virus-therapy
1•gradus_ad•48m ago•0 comments

Let's Make Video Games Like It's 1994

https://www.ciroduran.com/2026/10/game-maker-1994-i/
2•speckx•48m ago•0 comments

AI Safety Is Not a Corporate Plot

https://www.astralcodexten.com/p/ai-safety-is-not-a-corporate-plot
4•Analemma_•49m ago•3 comments

Fluxcut shows your product in professional demo video format

1•loveTech•51m ago•0 comments

Show HN: Shazbot – A sandboxed SSH tunnel manager for the Mac menu bar

https://zardecki.dev/blog/why-i-built-shazbot.html
1•AngryDad67•55m ago•1 comments