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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•9mo 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!

Hims and Hers abandons copycat weight-loss drug in face of FDA probe

https://www.ft.com/content/3d4f88e9-33aa-4e1d-81af-ae6954598d63
1•bookofjoe•3m ago•1 comments

Show HN: Claude Code skill that uses Codex as MCP server for code review

https://github.com/pauhu/claude-codex-review
1•pauhu•3m ago•0 comments

The Great Reversal ( OCC and Crypto)

https://www.halogate.io/insights/great-reversal
1•CognitiveBytez•3m ago•1 comments

Show HN: I built a festival tracker that matches lineups to your music library

https://apps.apple.com/us/app/festiveo-music-festivals/id6755355854
1•kirillstyopkin•5m ago•0 comments

Ship Types, Not Docs

https://shiptypes.com/
1•howToTestFE•6m ago•0 comments

RIP Postman free tier. Here's an open-source local-first alternative

https://old.reddit.com/r/webdev/comments/1qyi3wz/rip_postman_free_tier_heres_an_opensource/
1•taubek•9m ago•0 comments

There is no Alignment Problem

1•salacryl•9m ago•0 comments

Hid Remapper

https://github.com/jfedor2/hid-remapper
1•downboots•9m ago•0 comments

Recursive Deductive Verification: A framework for reducing AI hallucinations

1•salacryl•10m ago•0 comments

Bitcoin tumbles below $70K, heavy losses in cryptocurrencies in last three weeks

https://www.bloomberg.com/news/articles/2026-02-05/bitcoin-drops-below-70-000-as-forced-deleverag...
1•heresie-dabord•10m ago•0 comments

Electrobun v1: Build fast, tiny, and cross-platform desktop apps with TypeScript

https://blackboard.sh/blog/electrobun-v1/
3•merlindru•12m ago•1 comments

Why are so many people joining cults? [video]

https://www.youtube.com/watch?v=SfG0PeMS2tQ
1•mgh2•14m ago•0 comments

Apple to Allow ChatGPT, Claude, and Gemini in CarPlay

https://www.macrumors.com/2026/02/06/apple-third-party-chatbots-carplay/
1•geox•14m ago•0 comments

Startup Idea that stops consumers paying the full price

https://shoppyhi.netlify.app
1•daviddahuang•15m ago•0 comments

GitHub Agentic Workflows

https://github.github.io/gh-aw/
1•mooreds•17m ago•0 comments

Exploring hardware-authenticated file encryption in Python

1•Lif28•18m ago•0 comments

Show HN: SEO v3 – Zero-dependency, Simple, powerful PHP SEO library

https://github.com/melbahja/seo
1•exec7•20m ago•0 comments

Show HN: Alerio – Turn Webhooks into Critical VoIP Calls (Overrides Silent Mode)

https://alerio.app/
1•royal-amrah•21m ago•1 comments

A Comprehensive Benchmark for Document Parsing and Evaluation (2025)

https://github.com/opendatalab/OmniDocBench
2•oceansky•22m ago•1 comments

When 20 Watts Beats 20 Megawatts: Rethinking Computer Design

https://smarterarticles.co.uk/when-20-watts-beats-20-megawatts-rethinking-computer-design
1•dxs•25m ago•0 comments

Canadian Province New Brunswick to Quit Using Elon Musk's X

https://www.bloomberg.com/news/articles/2026-02-05/canadian-province-new-brunswick-to-quit-using-...
8•rbanffy•27m ago•1 comments

Heterogeneous Processing: A Strategy for Augmenting Moore's Law (2006)

https://www.linuxjournal.com/article/8368
1•rbanffy•28m ago•0 comments

Show HN: Mvvmm – Firecracker-like mini virtual machine monitor in ~2000 LoC

https://github.com/mistivia/mvvmm
1•mistivia•30m ago•0 comments

Search anything said on a podcast, speaker-labeled and speaker-tracked

https://poddley.com
1•onesandofgrain•30m ago•1 comments

Canada, better the 28th EU member than the 51st US state

https://www.lemonde.fr/en/opinion/article/2026/02/05/canada-better-the-28th-eu-member-than-the-51...
5•u1hcw9nx•31m ago•1 comments

Show HN: Team of agent researchers read things I don't have time to and brief me

https://read-fast.replit.app/
1•thomoliverz•33m ago•2 comments

Show HN: Chaos Agents – Run chaos experiments with Agents

https://github.com/system32-ai/chaos-agents
3•linuxarm64•34m ago•0 comments

Almostnode – Node.js in the Browser

https://github.com/macaly/almostnode
1•ushakov•34m ago•0 comments

Mount Fuji cherry blossom festival canceled due to overtourism

https://www.japantimes.co.jp/news/2026/02/05/japan/japan-mount-fuji-cherry-festival-overtourism/
3•akyuu•36m ago•1 comments

Containers, cloud, blockchain, AI – it's all the same old BS, says RH veteran

https://www.theregister.com/2026/02/08/waves_of_tech_bs/
1•lproven•37m ago•0 comments