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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!

F/OSS Comics #9: The Unix Philosophy

https://fosscomics.com/posts/9.%20The%20Unix%20Philosophy/
1•joonehur•4m ago•0 comments

Maps and database of 802.11 wireless networks, with statistics

https://wigle.net/
1•momentmaker•5m ago•0 comments

The first search engine for Internet-connected devices

https://www.shodan.io/
2•momentmaker•7m ago•0 comments

Worldwide animated weather map, with easy to use layer and precise spot forecast

https://www.windy.com
2•momentmaker•8m ago•0 comments

Show HN: CodeDuel: Compete against AI to stay sharp

https://www.duelai.dev/
1•Nahom_a•9m ago•0 comments

Show HN: Fast video cutter that works 100% locally in the browser

https://convertix-fast-imager-co.blogspot.com/p/convertix-free-online-image-converter.html
1•convertix123•10m ago•0 comments

Show HN: Rally (Real-Time Dual-Arm Robotic Table Tennis System)

https://github.com/ColonelToad/Rally
1•tolugenius•16m ago•0 comments

Fat Men's Club

https://en.wikipedia.org/wiki/Fat_men%27s_club
2•handfuloflight•17m ago•1 comments

Slump in eastern Australia gas demand shows no signs of easing (2025)

https://ieefa.org/resources/slump-eastern-australia-gas-demand-shows-no-signs-easing
1•thunderbong•21m ago•0 comments

Focus Is the Main Feature: Why I Miss the Old Claude Code

https://alexkras.com/focus-is-the-main-feature-why-i-miss-the-old-claude-code/
1•akras14•24m ago•0 comments

Centaur vs. Cyborg Being a Fisherman

1•wwolfson97•25m ago•0 comments

NVK Vulkan Video Merged for Mesa 26.3

https://www.phoronix.com/news/NVK-Vulkan-Video-Mesa-26.3
3•doener•38m ago•0 comments

Persistent RCE via BootROM and Kernel

https://github.com/lexs201992-gif/Project-LION-Manager-Provisioning-Enterprise/blob/a310e16ec48cd...
2•lexs201992-gif•40m ago•0 comments

How 'Stacks' Went from Bodybuilding and Computing to Describing Everything

https://www.nytimes.com/2026/08/13/magazine/stacks-bodybuilding-computing.html
1•bookofjoe•42m ago•0 comments

Offgrid Electric Car (2025)

https://joeyh.name/blog/entry/offgrid_electric_car/
1•gnyeki•45m ago•0 comments

Show HN: Website made $29,000 in 24 hours

https://1milllionpixels.com/
1•westche2222•48m ago•0 comments

Vintage Artificial Intelligence Collection

https://archive.org/details/vintageai
3•Unai•48m ago•0 comments

How to be psychoactive to each other

https://eirinimalliaraki.substack.com/p/how-to-be-psychoactive-to-each-other
2•jger15•51m ago•0 comments

Dr. Dre Says He Uses AI to Produce Songs

https://gizmodo.com/dr-dre-says-he-uses-ai-to-produce-songs-2000802009
2•pseudolus•56m ago•0 comments

Manjaro.org Certificates Expired Again

https://manjaro.org
2•zebreus•58m ago•0 comments

Uber faces fine of nearly $1B over automated driver suspensions

https://techcrunch.com/2026/08/23/uber-faces-fine-of-nearly-1b-over-automated-driver-suspensions/
1•pseudolus•1h ago•0 comments

We asked Claude if we should help the baby bird.

https://james1ach.substack.com/p/mourning-doves
1•jger15•1h ago•0 comments

Twitch and Amazon hit with lawsuit for training AI with streamers' content

https://www.engadget.com/2242283/twitch-amazon-hit-with-lawsuit-for-training-ai-with-streamers-co...
4•pseudolus•1h ago•0 comments

Cardiovascular Risk Declines with Heated Tobacco Uptake

https://www.emjreviews.com/cardiology/news/cardiovascular-risk-declines-with-heated-tobacco-uptake/
2•thunderbong•1h ago•0 comments

Show HN: Cogumi meet – Free, P2P Private 1:1 meeting with AI note taking

https://www.meet.cogumi.com/
1•aichelles•1h ago•0 comments

Show HN: Neostatic, a tiny site/blog generator for neocities

https://github.com/giannitedesco/neostatic
1•scaramanga•1h ago•0 comments

Show HN: Repo world – A visual IDE for kids

https://github.com/michaelaz774/RepoWorld
2•michael774•1h ago•0 comments

How to Build a Live Chart from a REST API

https://www.amplitudepoint.com/blogs/live-chart-from-rest-api
1•markomarksdev•1h ago•0 comments

How on Earth do you code in r3forth? [video]

https://www.youtube.com/watch?v=4JN1ywONiN4
1•phreda4•1h ago•0 comments

Wrong antibody used in over 50 cell aging studies

https://www.nature.com/articles/d41586-026-02352-4
9•Murfalo•1h ago•1 comments