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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!

Tensordyne is making AI compute more efficient using logarithms

https://www.zach.be/p/tensordyne-is-making-ai-compute-more
1•hasheddan•2m ago•0 comments

The Free and Open Web Is Under Attack at the IETF

https://www.eff.org/deeplinks/2026/06/free-and-open-web-under-attack-ietf
3•hn_acker•6m ago•0 comments

The (real) dead economy theory

https://pluralistic.net/2026/06/17/its-the-stupid-economy-stupid/
1•hn_acker•7m ago•0 comments

The No Fakes Act Could Silence Satire, Commentary, and News

https://www.eff.org/deeplinks/2026/06/no-fakes-act-could-silence-satire-commentary-and-news
2•hn_acker•8m ago•0 comments

Salvager, Undo for AI agents that edit your files

https://www.salvager.sh/
1•gorkamb•10m ago•0 comments

Show HN: Criterion Closet as a website – pull any of 1,247 films off the shelf

https://the-criterion-closet.vercel.app/
1•olievans•11m ago•1 comments

Hydra – a one-line Gradle RASP that seals app secrets until the device is clean

https://github.com/iamjosephmj/hydra
1•iamjosephmj1•13m ago•0 comments

Treating Agent Reasoning as a Span

https://forestmars.substack.com/p/ai-agents-run-to-completion
1•polynomial•15m ago•1 comments

Compiles any HuggingFace model into a single persistent megakernel

https://twitter.com/Akashi203/status/2067379010762338681
2•OsamaJaber•16m ago•0 comments

Apple Reveals Plans to Raise Prices

https://www.wsj.com/tech/apple-reveals-plans-to-raise-prices-1fbcc1d4
3•mfiguiere•16m ago•0 comments

Show HN: Righthand – Autonomous AI assistants with skills, goals, and a CLI

https://www.rigthhand.ai
2•notanaiagent•18m ago•0 comments

Vyrse – Social Bible reader for skeptics

https://vyrse.app
1•StudioHeat•19m ago•0 comments

Play Snake in Your Favicon

https://franciscouzo.github.io/favisnake/
1•toilet•21m ago•0 comments

China: Free AI for developing world; G7: who gets access to American models?

https://thenextweb.com/news/china-ai-global-cooperation-vs-g7-export-controls
1•skeledrew•24m ago•0 comments

Show HN: WaylandClientKit – a Swift Wayland client substrate for Linux

https://github.com/conxlgtm/WaylandClientKit
2•Nocerg•25m ago•0 comments

List of video game console color palettes

https://en.wikipedia.org/wiki/List_of_video_game_console_palettes
2•kibwen•28m ago•0 comments

HandoffKit: Coordinate agents by passing messages, not sharing memory

https://platformpilot.ai/blog/open-sourcing-handoffkit
1•ricardo-larosa•30m ago•1 comments

America's bull market has entered its manic phase

https://www.economist.com/finance-and-economics/2026/06/16/americas-bull-market-has-entered-its-m...
1•andsoitis•31m ago•1 comments

BytePack: Header-only message serialization library for C++17

https://github.com/alkonosst/BytePack
1•sohkamyung•32m ago•0 comments

Border Enforcement Does Affect American Workers' Wallets

https://www.wsj.com/opinion/border-enforcement-does-affect-american-workers-wallets-cc45d6b0
2•PKop•33m ago•0 comments

A Chrome extension for AI routing that reduces friction when selecting AI models

https://chromewebstore.google.com/detail/promptrouter/bojhdblkfdngamonhpbpofcnjonjbkff
1•rheorix•34m ago•0 comments

Chinese open source model better than Fable [video][13 mins]

https://www.youtube.com/watch?v=plcuiOXn_Pk
1•Bender•34m ago•0 comments

Report on Titan Submarine Destruction

https://www.tsb.gc.ca/eng/rapports-reports/marine/2023/m23a0169/m23a0169.html
1•bluenose69•35m ago•0 comments

Rust Foundation Welcomes OpenAI as Platinum Member, Announces Donation to Rust

https://rustfoundation.org/media/rust-foundation-welcomes-openai-as-platinum-member-announces-don...
1•ndesaulniers•35m ago•0 comments

Show HN: Canipls – see caniuse.com global support percentages as you type

https://github.com/taylorplewe/canipls
1•taylorplewe•36m ago•0 comments

Italian noble investigated over Sarajevo 'human Safari' killings

https://www.thetimes.com/world/europe/article/italian-noble-investigated-over-sarajevo-human-safa...
1•cwwc•38m ago•0 comments

A framework for verifiable analysis of AI behavior

https://transluce.org/docent/blog/analysis-plans
1•mengk•39m ago•0 comments

Show HN: Reyn – local-first AI that journals and recalls your work

https://www.usereyn.com/
3•toluwajibodu•40m ago•0 comments

Norrin: Regain control of claude code. Prevent hours of review.

https://www.norrin.dev/
1•gagewoodard•41m ago•0 comments

Tour the Atmosphere

https://aturi.to/
1•doener•41m ago•0 comments