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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!

DeepSeek V4 Flash 2.98x faster, lossless

https://runinfra.ai/catalog/deepseek-v4-flash-b200x4-v4turbo
1•OsamaJaber•2m ago•0 comments

Building compliant AI medical software

https://geekyants.com/en-us/blog/how-to-build-medical-device-software-with-ai-compliance-architec...
2•varda_62892•2m ago•0 comments

Splint: Annotation-assisted lightweight static checking for C. (2004)

https://splint.org/
1•fanf2•3m ago•0 comments

Show HN: Draftlight – AI that makes you a better writer (leaves writing to you)

https://draftlight.xyz/
1•mlitwiniuk•3m ago•0 comments

Why Shouldn't Amazon Spinoff AWS and Annapurna Labs?

https://www.nextplatform.com/cloud/2026/08/04/why-shouldnt-amazon-spinoff-aws-and-annapurna-labs/...
1•rbanffy•4m ago•1 comments

Ask HN: What has your personal website/blog done for you?

2•chistev•6m ago•0 comments

OSS WebUI Llms.py v4: Projects, Agent Profiles, PDF Studio, 1-Click Sharing

https://llmspy.org/docs/latest
2•mythz•10m ago•0 comments

One Man's Quest to Fix Every Deadly Guardrail

https://www.newyorker.com/magazine/2026/07/27/one-mans-quest-to-fix-every-deadly-guardrail
2•mhb•10m ago•0 comments

Buckminster Fuller: everything I know

https://www.bfi.org/about-fuller/everything-i-know/
3•simonebrunozzi•11m ago•0 comments

Hungary within millimetres of shutting down its NPP as region fights drought

https://www.theguardian.com/world/live/2026/aug/04/europe-drought-extreme-heat-wildfires-climate-...
2•Markoff•13m ago•1 comments

I Spent 2B Tokens Writing a C++ Compiler So You Don't Have To

https://medium.com/@vishvananda/i-spent-2-billion-tokens-writing-a-c-compiler-so-you-dont-have-to...
2•lemming•13m ago•0 comments

Show HN: Bourdon – one shared memory file for Claude Code, Codex, Cursor

https://bourdon.ai
2•RADLAB•13m ago•0 comments

Why Netflix is betting on systems thinkers in the AI era: Elizabeth Stone (CPTO)

https://www.youtube.com/watch?v=t0GiTyz4syY
2•Brysonbw•13m ago•0 comments

Hackers Hit Bitcoin's Safest Hiding Place in Ongoing Attack

https://www.bloomberg.com/news/articles/2026-08-03/hackers-target-bitcoin-s-safest-hiding-place-i...
2•geox•14m ago•0 comments

AI-Generated Images Discourage Me from Reading Your Blog

https://nelson.cloud/ai-generated-images-discourage-me-from-reading-your-blog/
3•meysamazad•15m ago•0 comments

Thinking Partners

https://www.danritz.com/articles/thinking-partners/
2•meysamazad•15m ago•0 comments

Real-Time Level-of-Detail Rendering with ReSTIR

https://research.nvidia.com/labs/rtr/publication/wang2026levelofdetail/
2•ibobev•16m ago•0 comments

Stylized GGX Shading

https://alexandrelamure.github.io/graphics-posts/stylized-ggx-shading.html
2•ibobev•16m ago•0 comments

Gabor Fields: Orientation-Selective Level-of-Detail for Volume Rendering

https://arcanous98.github.io/projectPages/gaborVolumes.html
2•ibobev•17m ago•0 comments

Show HN: Salary Ticker – a macOS menu bar app that ticks up your pay

https://steveharrison.dev/salaryticker/
2•steveharrison•17m ago•0 comments

Show HN: A new type of search engine

https://galefox.com/
2•wesammikhail•19m ago•0 comments

Machine-Speed Attacks: Lessons from the Hugging Face Intrusion

https://www.picussecurity.com/resource/blog/machine-speed-attacks-lessons-from-the-hugging-face-i...
2•benrothke•20m ago•0 comments

How to talk to customers and learn if your business is a good idea

https://www.momtestbook.com
2•Brysonbw•20m ago•0 comments

US company's AI lets Ukraine's cheap kamikaze drones track targets on their own

https://arstechnica.com/ai/2026/08/ukraines-drones-get-ai-upgrades-for-kamikaze-strikes-future-sw...
2•rbanffy•20m ago•0 comments

The next step is getting rid of "source code"

https://xcancel.com/antibot/captcha
2•thedreammachine•21m ago•0 comments

Hollowgraph Backdoor Turns Microsoft 365 Calendars into a C2 Channel

https://www.picussecurity.com/resource/blog/hollowgraph-backdoor-turns-microsoft-365-calendars-in...
2•benrothke•24m ago•0 comments

Built an FEM solver that runs in a web browser

https://elementarium.app/
2•janvorisek•26m ago•0 comments

Show HN: Fine-tune an 8B model on a 4 GB laptop GPU

https://github.com/MakazhanAlpamys/Soup
2•MakazhanAlpamys•27m ago•0 comments

57,000 times lighter than Loom – no round video bubble, but who cares?

https://deckdownload.netlify.app/
2•astonfred•32m ago•0 comments

Show HN: A speed reading test you can fail

https://www.readkinetic.com/speed-test
2•SamuraiLion•32m ago•0 comments