Font Awesome  is an MIT licensed collection with over 400 scalable icons.

To use the collection in an XPage application:

• Download the latest version from the site (I tested this page with 4.1.0) and extract the contents from the ZIP file.
• Font Awesome tries to load a font file from the font-awesome-4.1.0 folder using a URL with a parameter (fontawesome-webfont.eot?v=4.1.0), but Domino doesn't like that syntax. To fix that: open the font awesome CSS files (there should be 2), search the file for 'url' (you should find 5 occurrences) references, and add  ?open  right after the filename that's referenced. You might need to replace a ? by a an ampersand (UPDATE: this seems to be better for compatibility with older browsers than just removing the parameters)
  
  Example:
  
  url('../font/fontawesome-webfont.eot?v=4.1.0');
  
  becomes
  
  url('../font/fontawesome-webfont.eot?open&v=4.1.0');
  
  
• Add the font-awesome-4.1.0  folder from the ZIP file (with the modified CSS files) to the WebContent folder your application (tip: just drag-n-drop it from Windows Explorer to the Package Explorer in Domino Designer)
• Include the  font-awesome.min.css  CSS file to be loaded by your XPage/ theme/ layout custom control.