Hanaco Weather – A poetic weather SNS from the OS Yamato project
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…
Hanaco Weather – A poetic weather SNS from the OS Yamato project launched on August 20, 2025 with 18 votes, #700 of 8,530 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
Hanaco Weather is a minimalist social network where users share short, emotional weather thoughts and connect with others experiencing the same conditions. Built on OS Yamato, a custom operating system designed around ephemerality, the platform features no likes or followers, instead emphasizing gentle presence. Content like diaries and photos bloom and fade naturally over time unless actively engaged with, creating a nature-inspired space for temporary digital memories.
written from the facts on this page · September 2026
From the sources
hanaco Weather is a poetic SNS inside OS Yamato. Share short weather-based thoughts or photos tied to the sky and temperature. Others can gently reply or like. No trends, no feeds — just quiet, ephemeral connection. Requires signing up for OS Yamato.
A gentle, ephemeral OS crafted with wabi-sabi spirit — running on AWS EC2 as a virtual OS for mobile devices. Lightweight, minimalist, and designed to quietly support your moments. - osyamato/os-yamato
hanaco Garden is the first application to bring the social features of OS Yamato into a living, interactive world. It demonstrates how messaging, weather, footprints, and gentle connections can exist naturally inside a game. While tending your garden, you can discover messages floating through the sky, meet other players, and experience a slower form of connection. hanaco Garden is becoming a playful gateway into the world of OS Yamato. 📱 App Store:from github.com
In the maker’s words, at launch
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…
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