Bitstream Speedo, or Speedo, is an obsolete scalable font format created by Bitstream Inc.^[1] Speedo was used on Atari ST, Falcon, in the XyWrite word processor, and in very early versions of WordPerfect and Microsoft Windows.^[2] Speedo was replaced by more popular font types like Type 1 fonts. Before Speedo was considered obsolete it was supported by the X Window System through the speedo module, and most Linux distributions had a Speedo font package, but support was removed from X in the X11R7.0 release in 2005.^[3] Speedo fonts have the file extension .spd.