Download OS MasterMap Viewer

GML3 Viewer: If you want to view other GML datasets, please download our generic GML Viewer

In order to use the OS MasterMap Viewer you first need to register for an activation code which will be emailed you.

Click here to receive an activation code

After receiving your code, download the appropriate installer and run it on your machine, typing in the activation code when prompted.

Our OS MasterMap Viewer is available with or without a Java virtual machine. If you have Java 1.4.2 or later installed on your machine choose the 'without Java VM' option. If you do not have java installed or are unsure which version you have installed download the 'includes Java VM' option.

NOTE: The viewer is not compatible with the latest version of Java (Java6 aka Java 1.6.0). Until we develop a fix we have temporarily removed the 'without Java VM' option. If you really need this option then use the Contact form to request a without VM installer for Java v1.5 only.

Available Installers:

Platform
includes Java VM
without Java VM
win Windows
See Note Above
Linux
Not Available
Solaris
Not Available
Mac OS X
Not Available