A small POSIX-like coding-agent userspace contained in one browser WebAssembly machine. Pick an image or rebuild it visibly from source.
Saved sessions → · Run a Dollyfile → · Shortcuts
Everyday shell environment with Git, Make and C/C++. Starts Slop.
Airtime: Foundry. Industrial strafe trials with disappearing pads, scroll jumping and mouse capture.
Bootstraps CMake from source for building C/C++ projects. Includes libuv and Slop.
Create custom images with Pi, local Qwen models, Neovim syntax highlighting and Dollyfile linting.
Example: fetch pinned upstream xxd source over HTTPS and compile it inside Dolly. Try printf Dolly | xxd.
Singularity: an interactive 3D physics playground with raylib, Box3D and Pi.
Singularity with touch controls inside the sandbox. Requires a wasm64-capable browser.
Reusable raylib and Box3D headers, libraries and sources for building games. Starts Slop.
Builds the Ghostty terminal from source with Zig. Includes its compiler and SDK; starts Slop.
QuickJS, Janis and TypeScript for building JavaScript tools. Starts Slop.
Neovim with Lua and syntax parsers, built from source. Edit sandbox files through Ghostty.
Builds Neovim, Lua and syntax parsers from source. Includes CMake and development libraries.
Pi coding agent with JavaScript/TypeScript tools and the shared shell environment.
Pi with on-device Qwen models via WebGPU. Open Ctrl+Shift+L to load a model; no API key needed.
Reusable Pi and JavaScript toolchain base. Starts Slop instead of launching Pi.
CPython, the Bonnie package manager and native-extension build tools. Starts Slop.
Pi with Python, Bonnie and package-installation guidance inside the sandbox.
CPython and its native-extension SDK without Bonnie. Starts Slop.
Shared shell, Git, build tools and C/C++ SDK used by the other images.
Saves keep files, not running programs. Stored only in this browser and site.