Install Multiple Roms on your Nexus 4 with Multi ROM

Nexus 4 owners can now install multiple roms on their Nexus 4 using Multi ROM. You can install any number of roms you want and when you boot up your Nexus 4 you will get an option to select the rom you want to boot into. The only drawback (if you may call it a drawback) is that you can’t use Android 4.2.2 and Android 4.3 roms together.

It can boot any Android ROM as well as other systems like Ubuntu Touch (not yet).Besides booting from device’s internal memory, MultiROM can boot from USB drive connected to the device via OTG cable. The main part of MultiROM is a boot manager, which appears every time your device starts and lets you choose ROM to boot. You can see how it looks on the left image below and in gallery. ROMs are installed and managed via modified TWRP recovery. You can use standard ZIP files to install secondary Android ROMs, daily prebuilt image files to install Ubuntu Touch and MultiROM even has its own installer system, which can be used to ship other Linux-based systems.

Features:
* Multiboot any number of Android ROMs
* Restore nandroid backup as secondary ROM
* Boot from USB drive attached via OTG cable

Below is a video from of Multi ROM on Nexus 4:-

For more details, installation instructions and download links head over to the original thread at xda.