Kojo is open source software, and is freely available. You can download and install Kojo based on the instructions and installers provided on this page.

Kojo downloads: Linux/Unix | Windows | Mac | Raspberry Pi | Chromebook | Cross Platform

Download related links: Font size adjustment | Media Files | Installer technology

New Kojo Releases are announced on the Kojo Blog; you can subscribe to the blog feed to be notified.

To get a taste of Kojo before downloading it, you can run a lightweight version of Kojo in your browser.

Linux/Unix

Inside a terminal, run 'uname -m' or 'arch' to determine whether you are on a 64 bit or a 32 bit (x86 architecture) system.

  • If the output is 'x86_64', you are on a 64 bit system.
  • If the output is 'i686', 'i586', 'i486', or 'i386', you are on a 32 bit system.
Based on the above output, choose the appropriate installer:

64 bit Linux/Unix

Kojo Installer (shell script) (Version: 2.7.04)
  • Download the Kojo installer (shell script). Then run it by opening up a Terminal Window, going to the directory where the installer is located, and running:  sh Kojo_unix_2_7_04_with_jre.sh
  • After Kojo is installed, you can run it from the Desktop (if you opted for a Desktop shortcut), from the Development application category/group, or from the bin directory inside your Kojo install.
  • The Kojo shortcut is named Kojo Learning Environment.
32-bit Linux/Unix

Kojo Installer (shell script) (Version: 2.7.04, needs Java 8)
  • Download the Kojo installer (shell script). Then run it by opening up a Terminal Window, going to the directory where the installer is located, and running:  sh Kojo_unix_2_7_04.sh
  • If Java 8 is not available on your computer:
    • Get the (OpenJDK based) Jetbeans Java Runtime.
    • Extract it to a directory of your choice.
    • Make JAVA_HOME point to this directory (by running 'export JAVA_HOME=directory_path' in the Terminal Window where you're installing Kojo).
    • Then run the Kojo installer.
  • After Kojo is installed, you can run it from the Desktop (if you opted for a Desktop shortcut), from the Development application category/group, or from the bin directory inside your Kojo install.
  • The Kojo shortcut is named Kojo Learning Environment.

Windows

Kojo Installer (exe) (Version: 2.7.04)
  • Download the Kojo Installer (exe) (and make sure it is saved as a .exe file by your browser). Run it to install Kojo.
    • If your anti-virus software does not let you install (or run) Kojo, follow these instructions to get around the issue.
  • After Kojo is installed, you can run it from the Desktop (if you opted for a Desktop shortcut), or from the Windows Start Menu, via the Kojo Program Group.
  • The Kojo shortcut is named Kojo Learning Environment.

Mac

Kojo Installer (dmg) (Version: 2.7.04 – built, signed, and hosted by Lund University)
  • Download the Kojo Installer (dmg), open it, and run the installer that's inside to install Kojo. If the OS pops up a message about the installer, follow these instructions to resolve the issue.
  • After Kojo is installed, you can run it from the Desktop (if you opted for a Desktop shortcut), or from the directory (Applications, by default) where you installed it.
Mac release notes

Raspberry Pi

Kojo Installer (shell script) (Version: 2.7.04, needs Java 8)
  • Download the Kojo installer (shell script). Then run it by opening up a Terminal Window, going to the directory where the installer is located, and running:  sh Kojo_unix_2_7_04.sh
    • Java 8 comes pre-installed on the Raspberry Pi, and will be used by the Kojo installer above.
  • After Kojo is installed, you can run it from the Desktop (if you opted for a Desktop shortcut), from the Programming application category/group, or from the bin directory inside your Kojo install.
  • The Kojo shortcut is named Kojo Learning Environment.
  • Note - you can hook up an Arduino with your Raspberry Pi and drive the combo with Kojo for some hardware hacking fun.

Chromebook

To install Kojo on Chromebooks, you need to:

Cross Platform

Kojo Distribution (zip file) (Version: 2.7.04, needs Java 8)

This is a fallback distribution, to be used if you run into problems with an installer that is specific to your platform. This distribution can be used on any platform where Java 8 is supported. To install Kojo via this distribution:

  • Make sure that Java 8 is installed on your computer. If in doubt, get Java 8 from the Java download site.
  • Download the Kojo Distribution (zip file) and extract it to a directory of your choice.
  • To run Kojo:
    • On Windows - go into the bin directory under the Kojo directory and run the kojo.exe program (or kojo.cmd script) there to launch Kojo. For easier launching in the future, right click on kojo.exe and 'Send' it to the Desktop as a shortcut. You can then launch Kojo via the Desktop shortcut.
    • On Unix or Mac - go into the bin directory under the Kojo directory and run the kojo script there to launch Kojo. You can create a launcher for this script as appropriate for your platform and put the launcher on your Desktop.
  • Note for advanced users - you are free to modify the kojo.cmd and kojo scripts to make them use a particular version of Java 8; by default they use the Java that is available on the path, and will fail if this is not Java 8.

Media Files

Media files are useful for working with the multiple turtle/sprite support in Kojo. Many different backgrounds, costumes, and sound files are available in the Scratch Media Bundle. To use these files, download the media bundle zipfile and unzip it under your home directory. You can then access the media files from inside Kojo using their absolute path, or their path relative to your home directory. For more information, visit the Media Notes page.

Installer Technology

The platform specific Kojo installers on this page have been built using the Install4j multi-platform installer builder.