Berryboot for the original Raspberry Pi and for the quad-core Raspberry Pi 2 is available at http://www.berryterminal.com/doku.php/berryboot.
To install: extract the contents of the .zip file to a normal (FAT formatted) SD card, and put it in your Raspberry Pi. Once you start your Pi it will start an installer that reformats the SD card and downloads the operating systems files from the Internet.
This video show booting up Raspberry Pi 2 with BerryBoot, download and install Ubuntu Linaro. Both the default user and password is "linaro".
Something to install on Linaro Ubuntu on Raspberry Pi:
- scrot, to capture screen
- GIMP image editor
- OpenSSH server
You can also try "Install Android 4.4.2 KitKat on Raspberry Pi 2 with BerryBoot v2.0".