MuLab Free is the fully functional entry level of MuLab and is free to everyone on earth
Eventhough it's limited, a creative soul can have a lot of musical joy with it, and it can also be used to evaluate MuLab XT/UL.
Note that when you exceed the powers of MuLab Free/XT, you'll hear a soft noise from time to time. For more info, click here.
MuLab Free 5.1.5 for Mac OSX
MuLab Free 5.1.5 for Windows (32 bit)
MuLab Free 5.1.5 for Windows (64 bit)
If you're not sure whether to take the 32 bit or 64 bit version, take the 32 bit version as that one will also work on 64 bit systems.
Change Log Quick Patch
Download the MuLab package, unzip it to a new folder and play!
For details on installation, uninstallation and inserting your MuLab User Key, click here.