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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!

I built an Android app for remembering things that have dates

https://play.google.com/store/apps/details?id=ai.netraksha.whenapp&hl=en_US
1•paras_dev•1m ago•0 comments

WAIC 2026: a glimpse of embodied AI innovations, humanoid robots [video]

https://www.youtube.com/watch?v=rgYHEq9_SM0
1•binyu•2m ago•0 comments

Software engineering at a proprietary trading company

https://newsletter.pragmaticengineer.com/p/optiver
1•alentred•2m ago•0 comments

Oh-My-Claudecode, Orchestration Layer That Removes Humans from the Build Loop

https://www.zhcinstitute.com/research/oh-my-claudecode-multi-agent-field-notes/
1•squirrel•8m ago•0 comments

TrueMath – An open-source exact symbolic math tool

1•SAWANs•11m ago•0 comments

Ask HN: Do you know of any company that went back to hand-written code?

2•antipurist•13m ago•0 comments

AGCX: Why AI Agents aren't assistants

https://www.agcx.org
1•Daviddstewartt•14m ago•0 comments

Autonomous Agentic Engineering Tools

https://rywalker.com/research/autonomous-agentic-engineering-tools
1•squirrel•14m ago•0 comments

Vero: Can AI Agents Build Formally Verified Software Repositories?

https://arxiv.org/abs/2608.13522
1•ninadwrites•15m ago•0 comments

Roundtables: The "Censorship-Industrial Complex" Idea Shaping US Policy

https://www.technologyreview.com/2026/08/13/1141399/roundtables-inside-the-censorship-industrial-...
1•joozio•17m ago•0 comments

Writing code isn't the bottleneck anymore, reading is

https://threedots.tech/post/understanding-code-is-bottleneck/
1•roblaszczak•17m ago•0 comments

Being 'good at business' can be bad for business – how enshittification happens

https://dwyer.co.za/static/being-good-at-business-can-be-bad-for-business-how-enshittification-ha...
1•sixhobbits•21m ago•0 comments

Show HN: Health medical messaging with ER7 pipe-hat and Rust

1•jph•25m ago•0 comments

The first anti-AI protester to be jailed has a message: 'Regain your humanity'

https://www.theguardian.com/us-news/2026/aug/16/california-openai-protester-wynd-kaufman
1•howard941•25m ago•0 comments

The 'Country Hicks' Who Refused $26M from an AI Data Center

https://www.wsj.com/tech/ai/ai-data-center-rural-america-backlash-c0af4e16
1•impish9208•29m ago•1 comments

Deriving human size from fundamental constants

https://twitter.com/fermatslibrary/status/2088283075801170383
1•MrBuddyCasino•30m ago•0 comments

What happened at Id Software with layoffs [video]

https://www.youtube.com/watch?v=aA64Ogzm_VU
1•LucidLynx•31m ago•0 comments

AetherGrid – Distributed AI compute orchestration without K8s

https://github.com/wycliffRotich-dev/aethergrid
1•WycliffeRotich•32m ago•0 comments

Interface for AI agents was invented in 1978

https://dev.profullstack.com/~anthony/blog/011-post.html
1•buffer_overlord•32m ago•0 comments

Punkt. MC03 Sovereign Smartphone Made in Europe

https://www.punkt.ch/products/mc03-premium-secure-smartphone
1•FinnLobsien•34m ago•0 comments

Simulating Humans at Scale: Simile's Joon Sung Park [video]

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

Zig Day Seattle, WA #3

https://zig.day/usa/seattle/3/
1•birdculture•35m ago•0 comments

An AI agent can burn 100× the tokens of a chat turn

https://aicharts.grok.me/c/agent-tokens
1•echohive42•35m ago•1 comments

Lawnmower-Like Enzyme Rewinds Decades of Molecular Aging in Human Tissue

https://www.the-scientist.com/lawnmower-like-enzyme-rewinds-decades-of-molecular-aging-in-human-t...
1•KasianFranks•36m ago•0 comments

Reversal of protein chemical aging by enzymatic deglycation

https://www.nature.com/articles/s41467-026-75141-2
1•KasianFranks•37m ago•0 comments

30× faster binary multivector ColBERT late interaction in Vespa

https://oskrim.github.io/engineering/2026/08/13/chunked-hamming-maxsim.html
1•oskrim•37m ago•0 comments

Jane Street has paid up large to avoid its numbers leaking out

https://www.ft.com/content/28a51284-98cc-4767-a306-0540d265687f
4•tcp_handshaker•42m ago•1 comments

GGFWPi – read-only Raspberry Pi firmware and Secure Boot auditor

https://github.com/patapik/ggfwpi
2•patapik•42m ago•0 comments

Dead in the Water

https://www.slow-journalism.com/long-reads/dead-in-the-water
1•tkocmathla•45m ago•0 comments

AI Coding Without the Vibes

https://peterbloem.nl/blog/craft-coding
2•riskone•47m ago•1 comments