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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•11mo 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!

Police corporal created AI porn from driver's license pics

https://arstechnica.com/tech-policy/2026/04/state-police-corporal-created-porn-deepfakes-from-dri...
1•Bender•2m ago•0 comments

Mystery over 8 missing or dead scientific experts

https://www.newsweek.com/mystery-over-8-missing-or-dead-experts-linked-to-ufo-research-11792852
1•ZunarJ5•6m ago•0 comments

What Playboy got right about men – Lust and literacy can coexist

https://unherd.com/2026/04/what-playboy-got-right-about-men/
2•pseudolus•10m ago•1 comments

I built a portfolio platform for creators (FelixPro.space)

https://www.felixpro.space
2•asabajumah•16m ago•0 comments

Sam Altman's Coworkers Say He Can Barely Code and Misunderstands Basic Concepts

https://futurism.com/artificial-intelligence/sam-altman-technical-coding
5•cebert•21m ago•2 comments

The Economics of Software Teams: Why Most Organizations Are Flying Blind

https://www.viktorcessan.com/the-economics-of-software-teams/
1•gpi•21m ago•0 comments

Vibe-Coded Ext4 for OpenBSD

https://lwn.net/Articles/1064541/
1•signa11•21m ago•0 comments

The role of LLMs in patch review

https://lwn.net/Articles/1064830/
1•signa11•22m ago•0 comments

Stream your terminal. Watch AI agents work. Like Twitch, for shells

https://github.com/sderosiaux/twitch-terminal
1•chtefi•23m ago•0 comments

The many failures leading to the LiteLLM compromise

https://lwn.net/Articles/1064693/
3•signa11•24m ago•1 comments

S3 for Non Technical Folks

https://bucketdrive.app/blog/how-to-give-non-technical-users-access-to-s3.html
2•justpeek•28m ago•0 comments

You Are Not the One – Chinese Dating Dystopia

https://terminaldrift.substack.com/p/you-are-not-the-one-chinese-dating
2•Natsu•28m ago•0 comments

Key ocean current is slowing at locations around the Atlantic

https://www.newscientist.com/article/2522463-key-ocean-current-is-slowing-at-locations-around-the...
1•bluerooibos•29m ago•0 comments

Show HN: SmolVM – open-source sandbox for coding and computer-use agents

https://github.com/CelestoAI/SmolVM
4•theaniketmaurya•30m ago•0 comments

Scientists have uncovered a "blind spot" in the research on rising seas

https://e360.yale.edu/features/sea-level-rise-land-subsidence
2•bluerooibos•32m ago•0 comments

OSS model's can't replicate the Mythos findings, it was a lie

https://github.com/stanislavfort/mythos-jagged-frontier/blob/main/prompts/openbsd-sack.md
1•kannthu•32m ago•1 comments

FT turned Bill Phillips' in-aquo macroecons simulator into VR app

https://www.ft.com/content/547a3fea-378d-45ec-a2cb-cb157ea7a9b4
1•curio_Pol_curio•35m ago•0 comments

Financial Times Phillips Machine VR App

https://apps.apple.com/us/app/ft-money-machine/id6569262299
1•curio_Pol_curio•37m ago•0 comments

Scientists invented a fake disease. AI told people it was real

https://www.nature.com/articles/d41586-026-01100-y
1•DrewADesign•55m ago•1 comments

Show HN: We scored 495 real SoC 2 audit reports – nearly all got a D or F

https://soc2quality.trenta.ai
3•rituraj_tiwari•59m ago•1 comments

Trinity-Large-Thinking: Scaling an Open Source Frontier Agent

https://www.arcee.ai/blog/trinity-large-thinking
3•somethingsome•1h ago•0 comments

Soul.md – A Meditation on AI Identity

https://soul.md/
2•znpy•1h ago•0 comments

GoScrapy: New Fast Web Scraping with Go (Built for Concurrency)

https://github.com/tech-engine/goscrapy
1•stonework•1h ago•0 comments

Mexico's President Sheinbaum Decrees Universal Healthcare for 120M

https://thedeepdive.ca/mexicos-president-sheinbaum-decrees-universal-healthcare-for-120-million/
3•testing22321•1h ago•1 comments

Show HN: AnimTOON – AI that animates SVGs with 3-4x fewer tokens than OmniLottie

https://github.com/srk0102/AnimTOON
2•srk0102•1h ago•0 comments

Open Source Alternative to Claude Managed Agents

https://agents.opencomputer.dev
5•iacguy•1h ago•1 comments

Bespoke OLAP: Using AI to Synthesize Workload-Specific DBMS Engines from Scratch

https://ucbskyadrs.github.io/blog/bespoke-olap/
1•matt_d•1h ago•0 comments

You know what I haven't ever seen? a good blogpost from an AI

1•wrqvrwvq•1h ago•0 comments

PC Repair OKC

https://okcitpros.com/
1•Veritaco•1h ago•1 comments

Automatic U.S. military draft registration planned by December, filing shows

https://www.cnbc.com/2026/04/09/military-draft-registration-automatic-iran-war.html
5•MilnerRoute•1h ago•3 comments