Castronaut builds open systems, large-model tooling, and small corners of the web that feel alive.

_{Operating systems • developer tools • experiments • writing • dreamtales}

• Also known as Cao Yuhang.
• Building things around CapOS, developer workflows, and large-model testing.
• Interested in systems, web products, and the craft of turning ideas into usable tools.
• I like projects that are practical, a little strange, and made with care.

• Open systems and lightweight infrastructure.
• Tooling for model engineering, testing, and developer workflows.
• Web products, small experiments, and practical interfaces.
• Public writing, notes, and sharable learning resources.

• capos
  Open-source server operating system with a friendlier web desktop and app ecosystem.
• lm-sv
  Tooling for stress-testing deep learning frameworks like MindSpore with generalized mutations.
• write4print
  A tool which can convert handwriting PDFs into a printable version.

• Start here: fwerkor.com
• Read more: blog.fwerkor.com
• Watch: YouTube
• Ping me: Telegram / Email

As the last ship sailed towards the distant horizon,
I sat there watching on a rock,
my mind slowly drifting away,
forming into my dreamtale.