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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!

Show HN: ParseHawk – 100% Local Document AI with API, CLI, and Web UI

https://github.com/parsehawk/parsehawk
1•francisrafal•1m ago•0 comments

How to build and serve MCP servers without effort

https://flama.dev/blog/building_an_mcp_server_with_flama/
3•vorticotech•2m ago•0 comments

Safer coding agents for non-tech founders

1•sherucon•2m ago•0 comments

Thoughts on Asimovian AI Beyond LLMs and Creative Machines

1•pyeri•4m ago•0 comments

Honesty Gets Emacs Patch Rejected

https://xlii.space/eng/honesty-gets-emacs-patch-rejected/
1•xlii•5m ago•0 comments

Show HN: GoDotWebs # Auto fill out apps/forms and get feedback instantly

https://godotwebs.com/
1•TheRickyRed•5m ago•0 comments

The Anti-Cybertruck: A Doorless EV Beach Buggy for the 1%

https://wheelfront.com/the-anti-cybertruck-a-doorless-ev-beach-buggy-for-the-1/
1•woldemariam•7m ago•0 comments

The Cut Wire

https://qbc.network/blog/autonomous-equivocation-slashing
1•BlockArtica•14m ago•0 comments

John von Neumann's the Computer and the Brain

https://en.wikipedia.org/wiki/The_Computer_and_the_Brain
1•thedreammachine•23m ago•0 comments

Is Blogging Still Worth It in 2026?

https://www.minid.net/2026/6/25/is-blogging-still-worth-it-in-2026
2•meerita•24m ago•0 comments

Scientists speak their brains: Please don't call us boffins (2023)

https://www.theregister.com/offbeat/2023/03/29/scientists-speak-out-please-dont-call-us-boffins/1...
1•Anthony-G•24m ago•1 comments

One Line x86 Change to GCC Nets +12% Benchmark Win for Modern CPUs

https://www.phoronix.com/news/GCC-x86-Generic-Mispredict
3•theanonymousone•27m ago•0 comments

LastPass notifies users of yet another data breach

https://9to5mac.com/2026/06/23/lastpass-notifies-users-of-yet-another-data-breach/
3•mooreds•31m ago•0 comments

The UK's summers are getting hotter – but how prepared are we?

https://www.bbc.com/news/articles/c9d2xl3555xo
3•mooreds•32m ago•3 comments

Why the EU's Tech Sector Is Growing

https://www.kuppingercole.com/blog/leal/eu-tech-sector-is-growing
1•mooreds•34m ago•0 comments

Why a (Minimal) Blog

https://lucianocccc.com
1•lucianocccc•37m ago•1 comments

The Joy and Power of Understanding

https://binaryigor.com/the-joy-and-power-of-understanding.html
1•BinaryIgor•37m ago•0 comments

Java MCP server with Streamable HTTP, Netty transports, and stateless deployment

https://github.com/kpavlov/tachyon
1•karimtr•38m ago•0 comments

The reason China is building most of the robots

https://www.ft.com/content/c8731833-10ca-4a12-bfe4-8ebb2584ec68
1•mmarian•39m ago•1 comments

Dolphin Emulator Progress Release 2606

https://dolphin-emu.org/blog/2026/06/25/dolphin-progress-report-release-2606/
9•exploraz•39m ago•0 comments

An Interview with Figma CEO Dylan Field About Design and AI

https://stratechery.com/2026/an-interview-with-figma-ceo-dylan-field-about-design-and-ai/
1•swolpers•39m ago•0 comments

Data center noise irks Virginia neighbors: 'You just want to curse'

https://www.youtube.com/watch?v=AtXD4EFOsCg
1•tcp_handshaker•40m ago•0 comments

Florida sues OpenAI and CEO Sam Altman, claiming company hid ChatGPT risks

https://www.pbs.org/newshour/nation/florida-sues-openai-and-ceo-sam-altman-claiming-company-hid-c...
1•01-_-•41m ago•0 comments

SoftBank's Son calls AI bubble talk an 'insult,' delays retiring

https://www.taipeitimes.com/News/biz/archives/2026/06/25/2003859680
3•01-_-•43m ago•1 comments

Adversarial Communication

https://blog.glyph.im/2026/06/adversarial-communication.html
2•birdculture•44m ago•0 comments

The Problem Is Prompt Debt

https://www.dbreunig.com/2026/06/22/the-problem-is-prompt-debt.html
1•ljoshua•45m ago•0 comments

Most performant, secure, scalable, reliable, freest, open source data platform

https://averagedatabase.com
1•vismit2000•1h ago•0 comments

Laravel Anti DDoS!

https://github.com/farad-tech/laravel-auto-shield
1•faradtech•1h ago•0 comments

Show HN: How to Use Unlimited Token Plan with OpenCode

https://twitter.com/CanopyWave_AI/status/2069957571184832525
3•Timmyzzz•1h ago•1 comments

Anthropic Claims Alibaba Ran 'Brazen' Campaign to Access Its Claude AI Model

https://www.wsj.com/tech/ai/anthropic-claims-alibaba-ran-brazen-campaign-to-access-its-claude-ai-...
1•flowerlad•1h ago•0 comments