The Internet Explorer project was started in the summer of 1994 by Thomas Reardon, using source code from Spyglass, Inc. Mosaic, an early commercial web browser with formal ties to the pioneering NCSA Mosaic browser. In late 1994, Microsoft licensed Spyglass Mosaic for a quarterly fee plus a percentage of Microsoft's non-Windows revenues for the software. Although bearing a name similar to NCSA Mosaic, the Spyglass Mosaic had used the NCSA Mosaic source code sparingly.