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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: IchiPitchy – browser-based vocal editor and multitrack mixer

https://www.ichipitchy.com/
1•a_self_explorer•1m ago•0 comments

Show HN: Convert Android Motion Photos to Apple Live Photos

https://apps.apple.com/sg/app/pinwheel/id6781777754?mt=12
1•vincentneo•1m ago•0 comments

EF Core 11 makes your split queries faster

https://steven-giesel.com/blogPost/d4401fd0-805a-4703-9d9e-5fe3b57c25ea
1•rellem•9m ago•0 comments

The Fediverse Is Not the Way Forward

https://trialandfailure.net/the-fediverse-is-not-the-way-forward/
5•ExMachina73•13m ago•0 comments

Show HN: Owthorize: catch destructive AI-agent tool calls before they run

https://www.npmjs.com/package/owthorize
1•ayushpawar•14m ago•0 comments

Show HN: Open-source no-code back end platform, now with AI flow generation

https://codezero.build/en/blog/0.0.0-canary-2651542634
1•nicosammito•16m ago•0 comments

The Message from Deep Space

https://store.steampowered.com/app/4080030/The_Message_from_Deep_Space/
1•vntok•17m ago•0 comments

Codifying the Rules: Building the Platform Behind the Agentic SDLC

https://blog.owulveryck.info/2026/07/02/sdlc-team-topologies.html
1•owulveryck•20m ago•0 comments

Show HN: A 'what you see is what you get' HTML editor for Mac

https://htmledit.io/
1•rtills•20m ago•0 comments

Show HN: Foundation, a different approach to software and AI

https://github.com/nmxmxh/foundation
2•MomohNobert•20m ago•0 comments

Teams Make Contact with Spacecraft Set to Boost NASA's Swift Science

https://science.nasa.gov/blogs/swift/2026/07/03/teams-make-contact-with-spacecraft-set-to-boost-n...
1•rbanffy•28m ago•0 comments

Freedom Feud: A Free Software Rap Anthem (2017) [video]

https://www.youtube.com/watch?v=fffQjrTCkLI
2•svt1234•28m ago•0 comments

The pandemic of incomplete OpenSSL error handling

https://blog.jak-linux.org/2026/07/03/openssl-pandemic/
2•teddyh•29m ago•1 comments

Show HN: Groot – Kubernetes incident evidence in one .tar.gz

https://github.com/hrodrig/groot/releases/tag/v1.0.0
1•hejeroaz•35m ago•0 comments

Fly for Less

https://erranta.com/
2•vasie•37m ago•0 comments

Show HN: Rethinking Anti-Cheat: Can Trust Be Distributed?

https://medium.com/@www.ahadprogamer/rethinking-anti-cheat-can-trust-be-distributed-b37a353ec84b
2•Ahadprogamer•43m ago•1 comments

The Asymmetric Future of AI in Cybersecurity

https://mstrada.me/posts/aicybersec
5•mstrada•48m ago•0 comments

P2P out the box alternative to Ngrok/Cloudflare using Iroh

https://www.npmjs.com/package/p2p-tunnel
2•objectwizard•48m ago•0 comments

Lead Mines of Galena, Kansas

https://dustbowlhighway.com/kansas/lead-mines/
1•saltdoo•51m ago•0 comments

Show HN: I built a tool to audit error density and modern PC optimization

https://flash-auditory-1-0.trcstudiosflashaudit.workers.dev/
1•Thdrough47•53m ago•0 comments

Create your own AI, then watch it battle others in your browser

https://kim-ai-gpu.github.io/2026/07/04/introducing-agenlus-browser-rl/
1•umjunsik132•56m ago•0 comments

Six Months with Claude Code

https://sajith.me/blog/2026/six_months_with_claude_code.html
1•sajithdilshan•1h ago•0 comments

Two channels for the top–antitop excess

https://cerncourier.com/two-channels-for-the-top-antitop-excess/
1•visha1v•1h ago•1 comments

Illuminating Iron Clusters' Magnetism

https://physics.aps.org/articles/v19/s92
1•visha1v•1h ago•1 comments

Explanation of everything you can see in htop/top on Linux

https://peteris.rocks/blog/htop/
2•theanonymousone•1h ago•0 comments

TabFM: Zero-shot tabular foundation model from Google Research

https://huggingface.co/google/tabfm-1.0.0-pytorch
1•theanonymousone•1h ago•0 comments

The Common Lisp Cookbook – LispWorks Review

https://lispcookbook.github.io/cl-cookbook/lispworks.html
6•AlexeyBrin•1h ago•0 comments

The Most Iconic American Artwork Is the Hardest to See

https://www.nytimes.com/interactive/2026/07/02/arts/design/statue-of-liberty-history-france-us.html
1•jsenn•1h ago•0 comments

Show HN: Sandbox-proxy – A forward proxy that injects credentials to sandboxes

https://github.com/yagop/sandbox
2•yagop•1h ago•0 comments

Why AI Will Never Achieve Consciousness

https://roburie.substack.com/p/why-ai-doesnt-think-cannot-reason
2•megamike•1h ago•2 comments