The new BSD and the X MIT license

• The Berkeley Software Distribution license was first used in 1989
• A non-copyleft license
• The original had an obnoxious advertising clause
  • all advertising material had to include a line of text, a problem as different authors used many different lines of text
  • it made the original BSD incompatible with the GPL
  • the new BSD license has not had this problem since 2000
• Is GPL-compatible
• Gives maximum freedom to recipients, even of releasing the software under any other license