Show HN: Hanaco Weather – A poetic weather SNS from the OS Yamato project
(github.com)18 points by tsuyoshi_k 4 days ago
hanaco Weather is a minimalist social network where users post short, emotional weather thoughts and connect with others experiencing the same weather.
No likes or followers (for now) — just gentle presence.
Built entirely by a solo engineer, including the custom operating system it runs on: OS Yamato.
What is OS Yamato?
OS Yamato is a poetic, ephemerality-first operating system designed to let digital memories bloom and fade, like flowers in the wind.
Features include:
Diaries that bloom like seasonal flowers — and wither if forgotten
Photos and videos that quietly disappear unless viewed again
Chat with ambient seasonal effects and no pressure
A soft, nature-inspired calendar with reusable schedule templates
Wind Messages — time-delayed letters that arrive months later
A 3D globe to see fleeting connections blossom around the world
Each app within OS Yamato reflects a different way of embracing impermanence in the digital world.
Learn more about the concept and philosophy: [YouTube – Write a diary, and a flower will bloom](https://youtu.be/JrqwU_N5WBA?si=kZQAadNdBGipk6gz)
Try Hanaco Weather now: https://hanaco875.com
#ShowHN #HanacoWeather #OSYamato #solodev #minimalism #digitalpoetry #webapp #ephemeral
First of all, thank you I’m deeply grateful for the big response and the many new sign-ups to OS Yamato. The project was featured on Hacker News and briefly reached #23 on the trending list — a surprising and humbling moment for a solo developer.
GitHub stars, comments, and kind words have been flowing in from around the world. Thank you so much.
This project is still in its early stages, and I’m constantly learning and evolving it based on the feedback I receive. I’ll keep refining it slowly and calmly — in the same spirit OS Yamato aims to embody.