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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!

Honeybees Repair Broken Pottery in Kintsugi-Inspired Sculptures

https://mymodernmet.com/ava-roth-kintsugi-ceramics/
1•speckx•30s ago•0 comments

Claude Corps

https://www.anthropic.com/news/claude-corps
1•surprisetalk•39s ago•0 comments

JWST reveals dawn-dusk atmosphere split on ultra-hot exoplanet WASP-121B

https://phys.org/news/2026-06-jwst-reveals-dawn-dusk-atmosphere.html
1•wglb•39s ago•0 comments

Satya Nadella is trying to rein in the tokenmaxxers at Microsoft

https://www.businessinsider.com/satya-nadella-tokenmaxxing-microsoft-rein-in-2026-6
1•_____k•53s ago•0 comments

A short interactive simulation about market timing and financial independence

https://play.ampledawn.com/
1•sankaritan•1m ago•0 comments

Show HN: Blueprint – executable stage gates for AI-assisted product work

https://blueprint.ninochavez.co/
1•chavezabelino•1m ago•0 comments

Gaussian Primes and Black Hole Calculations

https://www.scientificamerican.com/article/are-prime-numbers-hiding-inside-black-holes/
1•ah27182•3m ago•1 comments

Show HN: We Have Been Drawing Flows for Years. But We Are Not Using Their Power

https://wanderer-flow.de/blog/we-have-been-drawing-flows-for-20-years-but-we-are-not-using-their-...
1•steampixel•3m ago•0 comments

Show HN: Remember Doodle for group planning? I made my own as I wanted, simple

https://kalerum.com/en/tools/kadoodle
1•mailforge•7m ago•0 comments

Your AI Agent Is Compromised

https://www.trendmicro.com/vinfo/us/security/news/cybercrime-and-digital-threats/pwning-agentic-a...
2•rantingdemon•7m ago•0 comments

Clang Fable 5: When a compiler builds itself

https://github.com/Lambda0x90/clang-fable-5
3•Lambda0x90•7m ago•0 comments

Show HN: Axona – Speak or type raw thoughts, get an encrypted knowledge graph

https://axona.network
2•eatakishiyev•7m ago•0 comments

Principles of an Accountable AI Agent Network

https://www.tigera.io/blog/five-principles-of-an-accountable-ai-agent-network-how-to-evaluate-any...
2•baroiall•8m ago•0 comments

Core PPI up 9.6% annualized (0.8% MoM) in May

https://www.bls.gov/news.release/ppi.nr0.htm
2•JumpCrisscross•9m ago•0 comments

Webrings as Collective OAuth

https://isaaccorbrey.com/ramblings/webrings-as-collective-oauth
2•speckx•9m ago•0 comments

Proxmox Mail Gateway 9.1 released

https://proxmox.com/en/about/company-details/press-releases/proxmox-mail-gateway-9-1
2•neustradamus•10m ago•0 comments

LinkerDotLang an experimental language separating logic blocks from main linker

https://github.com/Graght/LinkerDotLang
2•Graght•10m ago•0 comments

Not mine, but it's a website where you can use a segment display

https://aresluna.org/segmented-type/
2•unexpectedVCR•10m ago•0 comments

ECB raises interest rates for the first time in three years

https://www.euronews.com/business/2026/06/11/ecb-raises-interest-rates-for-the-first-time-in-thre...
2•praseodym•11m ago•0 comments

Show HN: A Markdown web clipper that doesn't break tables, code, or math

https://chromewebstore.google.com/detail/markdown-web-clipper-—-sa/dpkinbemdemheacegfjbbkclcpbf...
2•tigrandza•12m ago•1 comments

Human Is the Agent: SolveIt Changed My Programming Journey After 25 Years (2025)

https://christhomas.co.uk/blog/2025/09/24/the-human-is-the-agent-how-solveit-changed-my-programmi...
2•0xpgm•12m ago•0 comments

Trouble Ahead for GLP-1 Drugs as Health Plans Stop Paying

https://www.forbes.com/sites/brucejapsen/2026/06/09/trouble-ahead-for-glp-1-drugs-as-health-plans...
2•brandonb•13m ago•0 comments

'I love the inflation,' Trump says as prices rise amid Iran war

https://www.reuters.com/world/i-love-inflation-trump-says-prices-rise-amid-iran-war-2026-06-10/
3•geox•13m ago•0 comments

CitedBy – See if AI models mention your company for $1

https://www.thrivestack.ai/solutions/ai-visibility
3•roniin19•16m ago•0 comments

Once again players are right to suspect AI was used in a game

https://www.pcgamer.com/software/ai/once-again-players-are-right-to-suspect-ai-was-used-in-a-game...
2•isaacfrond•17m ago•0 comments

Show HN: Claude Code, no need to worry about sunk costs anymore

https://github.com/claude-schwabe/schwabe
3•schwabe•17m ago•0 comments

I Was a V.C. Partner. We Can't Let Silicon Valley Buy Democracy

https://www.nytimes.com/2026/06/11/opinion/silicon-valley-ai-politics.html
3•sebastian_z•17m ago•0 comments

Red5 Pro APIs – Postman API Network

https://www.postman.com/red5-streaming
2•mondainx•21m ago•0 comments

Demystifying the View Transition Pseudo Tree

https://master.dev/blog/demystifying-the-view-transition-pseudo-tree/
2•ibobev•21m ago•0 comments

The HUGEST, the MOST TREMENDOUS FreeBSD page-cache write primitive

https://bumsrake.de/
2•mvo•22m ago•0 comments