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Anura OS

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The next-gen webOS and development environment with full linux emulation

What is AnuraOS?

An entirely local browser "OS" and development environment with complete graphical linux emulation, visually based on chromiumOS. See a demo here, fully in your browser.

Due to numerous issues with Firefox's implementation of certain web standards, it is not supported on Anura. Please use a chromium-based browser or you will have a significantly diminished user experience. Safari is also fully compatible, as long as you have MacOS Sonoma, or iPadOS/iOS 17 or later.

Anura uses the features of a progressive-web-app to make its environment work fully offline, providing a virtual filesystem (synced with the linux emulator), a code editor, and a modular and extensible app system. You can even edit Anura's code live while inside of it!

Anura shows as more of a proof-of-concept with what's possible on the modern web rather than an actual product. However, it proves useful in many actual cases and is a useful educational tool.

What can AnuraOS do?

  • Run linux GUI apps from a terminal


Anura will not build on Windows. Please use a Linux VM or WSL

Easy Install (When in a codespace)

  • Run bash

NOTE: If you are not in a codespace skip to the regular installation steps.

NOTE: This does NOT build RootFS.


  • Make sure you have rustup and run the command: rustup target add wasm32-unknown-unknown
  • You also need to have a C compiler, inotifytools and a decent version of java installed
  • Clone the repository with git clone --recursive
  • Then, make all
  • NOTE: You can use make all -B instead if you want to force a full build.

Building ROOTFS

  • Make sure you have Docker installed and running.
  • Run make rootfs
  • Make sure to add yourself to the Docker group using usermod -a -G docker $USER
  • (Special Use Case) In the event that you should need to override/manually add the initrd and kernel, remember to keep track of the file names of initrd and vmlinuz in build/images/debian-boot/. Then, copy them to the Anura root directory and rename them to initrd.img and bzimage respectively.(See the extended instructions.)

Running Anura

You can run anura with the command

make server

Or, run authenticated with

cd server
npm start -- --auth

After Installation

NOTE: Anura uses recent web technologies, and is unstable in Gecko. Chromium is strongly recommended as it has seen the best results.

  • If you started the server, Anura should be running at localhost:8000.


Still being written. (See the current index of documentation)


See SecurityMD for reporting instructions.


AnuraOS is created by Mercury Workshop. Linux emulation is based off of the v86 project