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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!

Arm's C2-Ultra, G2-Ultra NX, and CSS N4 IP

https://chipsandcheese.com/p/arms-c2-ultra-g2-ultra-nx-and-css
1•ingve•2m ago•0 comments

So you want to use OpenRouter?

https://mmoustafa.com/blog/2026/09/07/so-you-want-to-use-openrouter/
1•mmoustafa•3m ago•0 comments

Autistici/Inventati (A/I)

https://en.wikipedia.org/wiki/Autistici/Inventati
1•doener•6m ago•0 comments

From dance floor to war: China readies humanoid robots for combat

https://www.reuters.com/world/china/dance-floor-war-china-readies-humanoid-robots-combat-2026-09-07/
2•bushwart•10m ago•0 comments

How Bats Prevent Doppler Acoustic Interference

https://hackaday.com/2026/09/07/how-bats-prevent-doppler-acoustic-interference/
1•sohkamyung•10m ago•0 comments

Arm unveils AI Portal for optimized AI apps

https://newsroom.arm.com/news/arm-unveils-arm-ai-portal
1•CoderLim110•11m ago•0 comments

UAE-based Falcon AI NSFW classifier among top global open-source models (2025)

https://www.middleeastainews.com/p/uae-ai-model-tops-50-million-monthly
1•instagraham•16m ago•0 comments

PS5 emulator can now run the console version of GTA V

https://www.tomshardware.com/video-games/pc-gaming/ps5-emulator-can-now-run-the-console-version-o...
2•avaer•17m ago•0 comments

What is your thought about the future on video extend developing?

https://videoall.ai/video‑extend
1•henryjin76•20m ago•1 comments

Working with Git Worktrees in Magit

https://emacsredux.com/blog/2026/09/02/working-with-git-worktrees-in-magit/
1•srijan4•24m ago•0 comments

0Pirate – AST-level code anonymizer and MCP proxy for frontier LLMs

https://pypi.org/project/0pirate/
1•arunmadhavan•26m ago•0 comments

JIT Context OS – Epistemic context runtime for coding agents

https://github.com/wojciechwiesner/jit-context
1•WWiesner•29m ago•0 comments

Show HN: MacDelta – A ChangeLog for Your Mac

https://macdelta.app
1•anand_murugan•31m ago•0 comments

CodeMetrics.CLI for C# projects in VS Code and Visual Studio

https://github.com/quicksln/CodeMetrics.CLI
1•qsln•33m ago•0 comments

TrustNotch – Tamper-evident audit logs for AI agents, verifiable offline

https://trustnotch.com/
1•sandrochekalov•34m ago•0 comments

My first extension with 20 useful features

https://chromewebstore.google.com/detail/digital-shield-tab-suspen/pkonihncnkmbejhhjadaognganhinnhc
1•digitaShida•34m ago•1 comments

Hiring and Firing a DBA

https://www.jmduke.com/posts/hiring-and-firing-a-dba.html
1•Tomte•41m ago•0 comments

The New Hugo at Home Plus a Tour of My Shelves

https://whatever.scalzi.com/2026/09/07/the-new-hugo-at-home-plus-a-tour-of-my-shelves/
1•Tomte•41m ago•0 comments

DeepSeek/Qwen are surprisingly well at generating code for DSCI pipelines

https://chat.deepseek.com/share/jg3hcnatoliqs1ct5i
3•melezhik•41m ago•3 comments

Venus may have been temperate and potentially habitable for most of its history

https://spacedaily.com/t-venus-carbonatite-lava-canali-co2-habitable-climate/
2•bryanrasmussen•41m ago•1 comments

Star Trek 60th Anniversary – National Air and Space Museum

https://airandspace.si.edu/whats-on/events/star-trek-60th-anniversary
1•rbanffy•41m ago•0 comments

Major Math Breakthrough by AI

https://mastodon.social/@tristanbuckmaster/117233413705701198
3•mvrandswe•42m ago•0 comments

GrapheneOS is building its own RCS support to cut Google Messages out

https://www.androidauthority.com/grapheneos-messaging-rcs-support-secure-paste-3708317/
4•the-mitr•45m ago•0 comments

Eiffel Tower employees strike after female staff removed

https://www.google.com/url?q=https://amp.dw.com/en/eiffel-tower-closed-strike-women-hindu/a-79152...
5•Michelangelo11•54m ago•2 comments

Magic-mushroom compound blocks a side effect of chemotherapy in mice

https://www.nature.com/articles/d41586-026-02744-6
4•tzury•56m ago•0 comments

Switching Password Managers in 2026

https://rmondello.com/2026/09/07/switching-password-managers-2026/
2•wrxd•56m ago•0 comments

CivBench: A Long-Horizon Benchmark for Tool-Mediated Agents in Civilization VI

https://arxiv.org/abs/2609.02459
1•taubek•56m ago•0 comments

Agility Robotics reports $1.8M revenue ahead of humanoid SPAC

https://www.therobotreport.com/agility-robotics-reports-18m-revenue-ahead-of-humanoid-spac/
1•raptortech•57m ago•0 comments

Generals – Conquer the live world map

https://generals.lol
2•mshermamatov•57m ago•0 comments

Do tech billionaires dream of shared abundance? We should probably just tax them

https://theconversation.com/do-tech-billionaires-dream-of-shared-abundance-we-should-probably-jus...
10•billybuckwheat•59m ago•0 comments