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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•10mo 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: Axe A 12MB binary that replaces your AI framework

https://github.com/jrswab/axe
1•jrswab•2m ago•0 comments

Show HN: A graph of story fragments shaped by reader votes

https://slopism.art
1•apresmoi•2m ago•0 comments

AI Security for Apps is now generally available

https://blog.cloudflare.com/ai-security-for-apps-ga/
1•emot•3m ago•0 comments

Can you beat the corporate AI bot? It denied your flight refund

https://fixai.dev
1•dragonmann•4m ago•0 comments

Show HN: I built proxy that keeps RAG working while hiding PII

1•rohansx•5m ago•0 comments

Lloyds Banking Group apps play mix-and-match with customer transactions

https://www.theregister.com/2026/03/12/lloyds_banking_group_glitch/
2•DarkCow•6m ago•0 comments

USDA is closing buildings, relocating staff, and downsizing-a lot

https://www.foodpolitics.com/2026/03/usda-is-closing-buildings-relocating-staff-and-downsizing-a-...
3•speckx•6m ago•0 comments

Show HN: We wrote a custom microkernel for XR because Android felt too bloated

https://explorexenevaos.vercel.app/
1•ayush_xeneva•7m ago•1 comments

Unlike Past U.S. Conflicts, Iran Attack Is Opposed by Most Americans

https://www.nytimes.com/2026/03/10/us/politics/polls-wars-us-support.html
3•duxup•7m ago•1 comments

Debian Time Capsule – a retro Unix desktop running in the browser

https://github.com/Victxrlarixs/debian-time-capsule
1•victxrlarixs•8m ago•1 comments

EDM: An Ultra-Low Latency Ethernet Fabric for Memory Disaggregation

https://dl.acm.org/doi/10.1145/3669940.3707221
1•blakepelton•9m ago•1 comments

Malus – Clean Room as a Service

https://malus.sh
3•microflash•9m ago•1 comments

Show HN: We analyzed 1,573 Claude Code sessions to see how AI agents work

https://github.com/obsessiondb/rudel
11•keks0r•10m ago•0 comments

Show HN: DollarDeploy AI, agent to deploy your web apps to production

https://dollardeploy.com/
2•huksley•10m ago•0 comments

Show HN: RAG knowledge base poisoning lab, 100% local

https://github.com/aminrj-labs/mcp-attack-labs/tree/main/labs/04-rag-security
2•aminerj•11m ago•0 comments

If computers are the future, why are computer users permanently illiterate?

https://lapcatsoftware.com/articles/2026/3/5.html
4•robenkleene•11m ago•0 comments

LLM Agent Tool Calling Patterns

https://www.reddit.com/r/LocalLLaMA/s/vRBDYzqum4
2•razodactyl•12m ago•0 comments

Iran war sparks helium supply concerns for South Korea chip sector

https://asia.nikkei.com/business/tech/semiconductors/iran-war-sparks-helium-supply-concerns-for-s...
4•toss1•13m ago•0 comments

Steve Yegge Wants You to Stop Looking at Your Code

https://www.oreilly.com/radar/steve-yegge-wants-you-to-stop-looking-at-your-code/
4•MindGods•14m ago•0 comments

First 6 days of Iran war cost $11.3B

https://www.nbcnews.com/politics/congress/first-6-days-iran-war-cost-11-billion-pentagon-tells-se...
3•johnbarron•15m ago•0 comments

The Verification Paradox: AI makes coding faster, but organizations slower

https://zenodo.org/records/18737908
2•frannyPS•15m ago•3 comments

Paid Contributors Wanted – Free and Local AI for Everyone

https://github.com/Light-Heart-Labs/DreamServer
2•lightheartai•16m ago•1 comments

Show HN: Atomic Commit – MCP and Claude plugin for structured Git workflows

https://github.com/GreyBoxed/atomic
2•suneeshtr•16m ago•0 comments

Historical RCE Tutorials Archive (Armadillo, ASProtect, Themida, SoftICE Era)

https://github.com/Show0ne/archivo-syxe05-snat
2•Show0ne•16m ago•1 comments

At Least 17 U.S. Sites Damaged in War with Iran, Analysis Shows

https://www.nytimes.com/interactive/2026/03/11/world/middleeast/iran-us-military-bases-strikes-ma...
4•whack•16m ago•0 comments

TriOnyx – What OpenClaw would have been if security came first

https://github.com/tri-onyx/tri-onyx
2•falense•17m ago•2 comments

Services, One Status Page

https://www.pingfalcon.net
2•NukeMyDay•19m ago•1 comments

Campaigners claim NHS Palantir system could be accessed by police, immigration

https://www.theregister.com/2026/03/12/medact_palantir/
2•jjgreen•22m ago•0 comments

Show HN: Arkadia – AI characters based on real animals

https://arkadia.lexisark.com/
1•didarsingh•23m ago•0 comments

Show HN: PromptSonar – Static analysis for LLM prompt security

https://github.com/meghal86/promptsonar
1•meghal86•23m ago•1 comments