After trying ViolaWWW, David Thompson demonstrated it to the NCSA software design group. This inspired Marc Andreessen and Eric Bina - two programmers working at NCSA - to create Mosaic. Andreessen and Bina originally designed and programmed NCSA Mosaic for Unix's X Window System called "xmosaic". Then, in December 1991, the Gore Bill created and introduced by then Senator and future Vice President Al Gore was passed, which provided the funding for the Mosaic project. Development began in December 1992. Marc Andreessen announced the project on January 23, 1993. The first alpha release (numbered 0.1a) was published in June 1993, and the first beta release (numbered 0.6b) followed quickly thereafter in September 1993. Ports to Microsoft Windows and Macintosh had been released in September. A port of Mosaic to the Commodore Amiga was available by October 1993. NCSA Mosaic for Unix (X Window System) version 2.0 was released on November 10, 1993. Version 1.0 for Microsoft Windows was released on November 11, 1993. From 1994 to 1997, the National Science Foundation supported the further development of Mosaic.