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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•11mo 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!

Mark's Magic Multiply

https://wren.wtf/shower-thoughts/marks-magic-multiply/
1•luu•1m ago•0 comments

Give Your Agent a Canvas, Not Just a Chatbox

https://create0.ai
1•enha•4m ago•0 comments

The Great GPU Shortage: H100 Rental Prices Up 40%

https://newsletter.semianalysis.com/p/the-great-gpu-shortage-rental-capacity
1•alecco•4m ago•0 comments

Due Diligence Framework Before Your Business Commits to Open Source

https://groundblue.gumroad.com/l/nlzhlx
1•elsadek•5m ago•0 comments

Show HN: I missed my terminal so I rebuilt email

https://tallyman.io
3•Mechse•6m ago•0 comments

AIYO Wisper – Local voice-to-text for macOS (WhisperKit, open source)

https://github.com/Aiyo28/aiyo-wisper
1•Aiyo28•10m ago•0 comments

What We Learned Building a Rust Runtime for TypeScript

https://encore.dev/blog/rust-runtime
1•vinhnx•12m ago•0 comments

Rust terminal projects in 3 years

https://blog.orhun.dev/800-rust-projects/
1•vinhnx•12m ago•0 comments

How AI Is Reimagining the Game of Golf–For Both Players and Courses

https://www.wsj.com/sports/golf/ai-in-golf-technology-impact-4122d0e1
2•thm•14m ago•0 comments

The tragedy of leisure

https://www.ft.com/content/b91b739e-2164-463c-a8e0-54b59650a9f9
2•pramodbiligiri•23m ago•0 comments

State of Utopia passes its first law

https://stateofutopia.com/laws/1/law1.html
1•logicallee•23m ago•2 comments

EU fingerprint and photo travel rules come into force

https://www.bbc.co.uk/news/articles/c39rkpe8mj2o
3•zeristor•23m ago•0 comments

Umeshism

https://scottaaronson.blog/?p=40
2•yawboakye•23m ago•0 comments

Artemis II is competency porn

https://lizplank.substack.com/p/artemis-ii-is-competency-porn-and
2•jgrodziski•29m ago•0 comments

Why you need to replace your native macOS screenshot app?

https://snapkeep.webytes.net/
1•Mohamm6d•30m ago•1 comments

Automated Browser Testing with MCP

https://en.wikipedia.org/wiki/Test_automation
2•jacksonkasi•35m ago•0 comments

Kaze Emanuar: Illegal 3D Rendering Techniques (N64) [video]

https://www.youtube.com/watch?v=xIUkoUEMf_g
1•tnelsond4•37m ago•0 comments

Picasso's Guernica (Gigapixel)

https://guernica.museoreinasofia.es/gigapixel/#3/63.11/-120.59
1•guigar•38m ago•0 comments

Show HN: LSM Trees: MemTable, Compaction, and the Amplification Triangle [video]

https://www.youtube.com/watch?v=rOC7jkN748w
1•rcron•38m ago•0 comments

France's government is ditching Windows for Linux, says US tech a strategic risk

https://www.xda-developers.com/frances-government-ditching-windows-for-linux/
4•pabs3•40m ago•1 comments

Reverse Engineering File Format Steganography Chain of the TeamPCP Attack

https://husseinmuhaisen.com/blog/reverse-engineering-teampcp-telnyx-file-format-chain/
1•husseinmuhaisen•40m ago•1 comments

GazeFollow from Scratch

https://github.com/aldipiroli/GazeFollow_from_scratch/tree/main
2•tgnk2341•40m ago•0 comments

Incremental Compilation with LLVM

https://ziglang.org/devlog/2026/#2026-04-08
1•birdculture•43m ago•0 comments

I built a skill manager for AI agents. The agents install the skills themselves

https://github.com/nattergabriel/reseed
3•eterer•44m ago•1 comments

I built a programming language in 6 days without writing a single line of code

https://github.com/Quynah/ape-lang
1•Quynah•44m ago•1 comments

Digital World Statistics in Real Time

https://anythingcounter.com
1•digitalofen•44m ago•0 comments

Pizza Tycoon Deluxe Bundle

https://store.steampowered.com/bundle/6361/Pizza_Connection__Deluxe/
1•doener•59m ago•0 comments

Scoop: Microsoft Is Pausing Carbon Removal Purchases

https://heatmap.news/carbon-removal/microsoft-carbon-removal-pause
4•doener•59m ago•1 comments

Claude API Error: 529

4•anujbans•1h ago•1 comments

Tomato – Visual DAG editor for NixOS configurations

https://github.com/thatsme/Tomato
2•alessio66•1h ago•1 comments