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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!

Show HN: FillBook – A trade journal for Kalshi with fee-adjusted P&L

https://fillbook.io
1•fillbookio•51s ago•0 comments

U.S. preparing to force Netherlands to ban ASML from selling to China

https://nltimes.nl/2026/08/20/us-preparing-force-netherlands-ban-asml-selling-china
1•giuliomagnifico•1m ago•0 comments

Echo of Einstein: An unexpected link between whale calls and special relativity

https://phys.org/news/2026-08-echo-einstein-unexpected-link-whale.html
1•pseudolus•2m ago•0 comments

Retro multiplayer world is also an IRC client

https://freeq.at/blog/this-retro-multiplayer-world-is-also-an-irc-client/
1•chadfowler•3m ago•0 comments

Associations of habitual coffee intake w/ testosterone & cardiometabolic markers

https://link.springer.com/content/pdf/10.1007/s00394-026-04038-z.pdf
1•bushwart•3m ago•0 comments

British Groups Push Age Verification Bills in 21 US States

https://reclaimthenet.org/report-british-groups-push-age-verification-bills-in-21-us-states
1•ironyman•4m ago•0 comments

Coin-Op and Console Game Promo Tapes

https://brianpeek.com/coin-op-and-console-game-promo-tapes/
1•cainxinth•6m ago•0 comments

Kingmakers: Crypto, AI, betting firms fuel record spending on the 2026 midterms

https://www.reuters.com/legal/legalindustry/new-kingmakers-crypto-ai-betting-firms-fuel-record-sp...
1•pseudolus•9m ago•0 comments

FCC abolishes gigabit speed goal

https://arstechnica.com/tech-policy/2026/08/fcc-abolishes-gigabit-speed-goal-suggesting-it-is-unf...
1•jonbaer•9m ago•0 comments

Deadvlei, Nambia – The Dark, the Dead, and the Desert

https://www.maloriesadventures.com/blog/deadvlei-nambia-the-dark-the-dead-and-the-desert/
1•thunderbong•10m ago•0 comments

Why Haven't the Voyager Spacecraft Ever Been Hacked?

https://lowendbox.com/blog/why-havent-the-voyager-spacecraft-ever-been-hacked/
1•shaunpud•12m ago•0 comments

Show HN: A directory of the best tweets available on twitter. hand-picked. no AI

https://billiondollartweets.com/
1•apsinghdev•12m ago•1 comments

We Stopped Counting Tokens

https://medium.com/super/we-stopped-counting-tokens-9278fbccadbc
1•herbertl•16m ago•0 comments

Hopf Spherical Compression and Quantization in C++23

https://github.com/meridionalissoftware/hscq
2•rfgplk•17m ago•1 comments

Show HN: Sutra – iOS e-books and comic reader with Calibre, OPDS and WebDAV sync

https://sutra-reader.com/index.html
1•darkusnitus•19m ago•0 comments

AI didn't erase the junior engineer's value, it increased it it

https://franciscotrindade.me/blog/the-kids-are-really-alright/
9•franciscomt•19m ago•2 comments

A better way to view diffs

https://charwise.vercel.app/
2•rpst•25m ago•1 comments

NASA calls off mission to rescue Swift gamma-ray observatory

https://arstechnica.com/space/2026/08/nasa-calls-off-mission-to-rescue-swift-gamma-ray-observatory/
2•pavel_lishin•25m ago•0 comments

Decennial Air Cruise of 1933

https://en.wikipedia.org/wiki/Decennial_Air_Cruise
1•simonebrunozzi•32m ago•0 comments

Survey of 106 European design engineers on what would make them change jobs

https://hymera.co/research-what-makes-a-design-engineer-leave-their-job
2•ablazevics•32m ago•0 comments

Eron on X: "LLMs do one thing: predict the next word

https://twitter.com/0xEronn/status/2089079333885198384
2•bilsbie•33m ago•0 comments

Show HN: Built my 15-year-old game idea

3•ashitlerferad•33m ago•0 comments

VulnBench: Can LLMs find the same security bugs twice?

https://vulnbench.com/
1•lirantal•34m ago•0 comments

What Zig felt like, coming from Rust

https://besok.github.io/posts/what-zig-felt-like-coming-from-rust/
1•birdculture•35m ago•0 comments

After Europe ditched Windows, China follows suit with its own home-grown Linux

https://www.xda-developers.com/after-europe-ditched-windows-china-follows-suit-with-its-own-home-...
1•ashitlerferad•36m ago•0 comments

Nearly one in ten published Claude Code skills does not load

https://toolproof.kynth.studio/census
1•kyisaiah47•37m ago•0 comments

Australia passes law to levy tech giants that fail to pay for local news

https://www.reuters.com/legal/litigation/australia-passes-law-levy-tech-giants-that-fail-pay-loca...
4•thm•38m ago•0 comments

Reverse-engineering Find My People to stalk a friend, cause I can

https://zerotistic.blog/posts/find-my-people-linux/
1•lalitmaganti•38m ago•0 comments

Fairphone (Gen. 6) Launched [video]

https://www.youtube.com/watch?v=v5v0LjXY6Fc
1•ashitlerferad•40m ago•0 comments

Show HN: Try Sequo to manage your AI context

https://sequo.app
1•shken•41m ago•0 comments