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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•12mo 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: Isgithub.online

https://isgithub.online/
1•vednig•32s ago•0 comments

Reticulate leaf venation in Pilea peperomioides is a Voronoi diagram

https://www.nature.com/articles/s41467-026-71768-3
1•geox•1m ago•0 comments

Show HN: Voice gender classifier for European voice AI (1MB, ONNX, 4ms)

https://huggingface.co/syntropicsignal-ai/gender-voice-classifier
1•biduskamil•2m ago•0 comments

What Happens to Software When Proof Is Cheap? [video]

https://www.youtube.com/watch?v=oSHVPvM56sA
1•joomy•3m ago•0 comments

Conduct Named SAP Strategic AI Partner for SAP Cloud ERP Transformation

https://conduct.ai/blog/sap-partnership
2•micouay•4m ago•0 comments

Toxic sewage tsunami racing toward US coast threatens wealthy beach towns

https://www.dailymail.com/sciencetech/article-15808841/tijuana-river-sewage-california-beaches.html
1•Bender•4m ago•0 comments

The Animated Eliptic Curve

https://curves.xargs.org/
1•colejohnson66•4m ago•0 comments

Linux 7.0.6 Released to Finish Mitigating the Dirty Frag Vulnerability

https://www.phoronix.com/news/Linux-7.0.6-Released
1•Bender•7m ago•0 comments

The Era of Risk-Maxxing

https://www.collisiondetector.com/the-era-of-risk-maxxing/
1•littlexsparkee•8m ago•0 comments

SQLite Columnar: Column-oriented extension for SQLite up to 130,000x faster

https://github.com/sqliteai/sqlite-columnar
2•marcobambini•8m ago•0 comments

All you need to know about the current hantavirus outbreak

https://sourceryintel.com/reports/the-2026-hantavirus-outbreak
1•freakynit•9m ago•0 comments

The Age of the Amplifier

https://www.construction-physics.com/p/the-age-of-the-amplifier
1•surprisetalk•10m ago•0 comments

Linux Scheduler Work Helping Boost Gaming Performance on Old "Potato" Hardware

https://www.phoronix.com/news/Linux-Flatten-The-Pick
1•Bender•12m ago•0 comments

Show HN: AI to Arse – Chrome text replacer for the new age

https://github.com/loadzero/ai-to-arse
1•loadzero•12m ago•1 comments

EU iOS users get Proximity Pairing, Notifications for third-party wearables

https://www.macrumors.com/2026/05/11/ios-26-5-eu-third-party-wearable-changes/
1•rippeltippel•14m ago•0 comments

UnDUNE II

https://liquidream.itch.io/undune2
3•tosh•17m ago•0 comments

Zig vs. Rust in 2026

https://zackoverflow.dev/writing/zig-vs-rust-in-2026/
2•danborn26•17m ago•0 comments

Why You Shouldn't Treat AI Agents Like Employees

https://hbr.org/2026/05/research-why-you-shouldnt-treat-ai-agents-like-employees
3•gpi•17m ago•0 comments

Three teams shipped the same fix for AI agents losing cross-repo context

https://riftmap.dev/blog/ai-coding-agents-need-cross-repo-context/
2•DaWe01•19m ago•0 comments

Illegal vs. Unwanted States

https://buttondown.com/hillelwayne/archive/illegal-vs-unwanted-states/
2•PaulHoule•20m ago•0 comments

Show HN: Retrace – reverse debugging for production CPython applications

https://github.com/retracesoftware/retracesoftware
3•L15p3r•20m ago•0 comments

Apple Bought Color Grading Tool Color.io in January

https://www.macrumors.com/2026/05/11/apple-color-io-acquisition/
2•tosh•21m ago•0 comments

Tool-Response Engineering: The Frontier Beyond Prompt Engineering

https://hic-ai.com/blog/tool-response-engineering
2•simonreiff•22m ago•0 comments

Second brain for meeting. Local-first (privacy focused). One-time payment

https://appmemora.app
3•kozielgpc•22m ago•0 comments

Waymo recalls 3,800 robotaxis over flood-risk software flaw

https://qz.com/waymo-recalls-3800-robotaxis-flood-risk-software-051226
2•louiereederson•24m ago•0 comments

Show HN: AnythingMCP – source-available gateway turning REST/SOAP/SQL into MCP

https://github.com/HelpCode-ai/anythingmcp
2•helpcodeai•24m ago•0 comments

Cross-platform MCP server letting Claude see your screen (Windows and Linux)

https://github.com/lfzds4399-cpu/claude-screen-mcp
2•FengLin4399•24m ago•0 comments

Show HN: Branchless Quicksort – faster than std:sort and pdqsort

https://easylang.online/blog/qsort
2•chrka•25m ago•0 comments

The Elusive Cost Savings of the Prefabricated Home

https://www.construction-physics.com/p/the-elusive-cost-savings-of-the-prefabricated
3•surprisetalk•25m ago•0 comments

AI-FI: Giving Claude Code Glitch Skills for Bypassing Secure Boot

https://raelize.com/blog/ai-fi-giving-claude-code-glitch-skills-for-bypassing-secure-boot/
1•notmine1337•25m ago•0 comments