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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!

Terra would have collapsed regardless of Jane Street

https://fragileequilibrium.substack.com/p/algorithmic-stablecoins-are-provably
1•brandoncarl•1m ago•0 comments

Could a vaccine prevent dementia? Shingles shot data only getting stronger

https://arstechnica.com/health/2026/02/could-a-vaccine-prevent-dementia-shingles-shot-data-only-g...
1•jnord•1m ago•0 comments

RAM now represents 35 percent of bill of materials for HP PCs

https://arstechnica.com/gadgets/2026/02/ram-now-represents-35-percent-of-bill-of-materials-for-hp...
3•jnord•2m ago•0 comments

Show HN: Automatic Image Localization Pipeline

1•yomwolde•3m ago•0 comments

Building Governed AI Agents – A Practical Guide to Agentic Scaffolding

https://developers.openai.com/cookbook/examples/partners/agentic_governance_guide/agentic_governa...
1•mooreds•4m ago•0 comments

Trying to Access ZFS-Encrypted SSD Following a Kernel Update Failure (2025)

https://forums.linuxmint.com/
1•transpute•6m ago•0 comments

Abandoning Resend.com for Email

https://anukari.com/blog/devlog/abandoning-resend-com-for-email
1•humbledrone•6m ago•0 comments

I hate my company's AI initiatives

https://kilohertz.substack.com/p/i-hate-my-companys-ai-initiatives
2•calobher•7m ago•0 comments

Turns out Generative AI was a scam

https://garymarcus.substack.com/p/turns-out-generative-ai-was-a-scam
3•oofbey•8m ago•0 comments

Former U.S. Air Force Pilot Arrested for Providing Services to Chinese Military

https://www.justice.gov/opa/pr/former-us-air-force-pilot-arrested-providing-defense-services-chin...
1•737min•10m ago•0 comments

Mitchell Hashimoto's new way of writing code

https://newsletter.pragmaticengineer.com/p/mitchell-hashimoto
1•JSR_FDED•10m ago•0 comments

Solar Thermal Energy Conversion with a Multilevel Inverter Circuit

https://www.mdpi.com/2673-4591/124/1/27
1•PaulHoule•14m ago•0 comments

Show HN: Relocate.ai – AI reports for families moving abroad

http://relocate-ai.178.156.240.80.sslip.io
1•greenbelt_dev•14m ago•0 comments

Open-Source Ecosystem Whale Falls

https://nesbitt.io/2026/02/21/whale-fall.html
2•transpute•15m ago•0 comments

Show HN: Decision Tree Builder

https://unli.xyz/tools/decision-tree.html
1•xk3•15m ago•0 comments

Show HN: ImageCFN – Analog, Resolution-Independent Image Representation

https://web-demo-ten-navy.vercel.app
2•prof_garlic•19m ago•1 comments

Trump admin halts [$250M of] Medicaid payments to Minnesota over fraud claims

https://www.cnn.com/2026/02/25/politics/trump-vance-minnesota-medicaid
4•Tadpole9181•19m ago•0 comments

DeepSeek withholds latest AI model from Nvidia, AMD

https://www.reuters.com/world/china/deepseek-withholds-latest-ai-model-us-chipmakers-including-nv...
5•cmrdporcupine•20m ago•1 comments

Show HN: OpenSwarm – Multi‑Agent Claude CLI Orchestrator for Linear/GitHub

https://github.com/Intrect-io/OpenSwarm
2•unohee•26m ago•0 comments

Show HN: EV424 – Reproducible Integrity Receipts (Don't Trust, Verify)

https://github.com/ev424verify/ev424-hub
1•lws9262•27m ago•0 comments

Reverse-engineer an MP3 player's firmware using LLMs

https://im.not.ci/echo-mini-rse/
1•uneven9434•27m ago•0 comments

Show HN: Usplus.ai – OpenClaw for Enterprise. Autonomous Agents to get work done

https://usplus.ai:443/
1•usplusAI•28m ago•1 comments

The Lives of Secrets

https://arenamag.com/articles/the-lives-of-secrets
1•jger15•34m ago•0 comments

Pentagon takes first step toward blacklisting Anthropic

https://www.axios.com/2026/02/25/anthropic-pentagon-blacklist-claude
2•jimmydoe•37m ago•0 comments

CSS Proposal:near(<length>) pseudo-class for pointer proximity

https://github.com/w3c/csswg-drafts/issues/13271
1•nnx•42m ago•0 comments

I built an AI fitness agent

https://twitter.com/fitly_ai/status/2026832485804384576
2•bradpineau•42m ago•0 comments

The Glass Transition Problem: An Unsolved Mystery in Physics

https://www.ade.pt/the-glass-transition-problem/
1•A_D_E_P_T•43m ago•0 comments

Ian AI Fitness Agent

1•bradpineau•43m ago•0 comments

Could users acting en masse take a major website down?

2•micio-micio•43m ago•5 comments

I built an open-source AI Gateway that sits between your apps and LLM providers

https://github.com/DatanoiseTV/aigateway
2•sylwester•46m ago•5 comments