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CoolTalk logo.png
Initial release1996
TypeInternet telephony tool

CoolTalk was an Internet telephony tool included as a plugin in Netscape Navigator 3.0, released in 1996. It included an answering machine and a shared whiteboard.[1][2][3] It offered full-duplex audio, multiple compression formats, including ones targeted at low-bandwidth connections, and message recording. The shared whiteboard supported text and graphics, including TIFF, GIF, JPEG, BMP, EPS, TARGA, RASTER, and SGI files. It was supported on Windows 95, Windows NT, Windows 3.1, MacOS, SunOS, Solaris, HP-UX, Digital Unix, and IRIX.


  1. ^ "Definition of: CoolTalk". PC Magazine Encyclopedia. Ziff Davis. Retrieved 3 December 2017.
  2. ^ Inc, Ziff Davis (1996-10-08). PC Mag. Ziff Davis, Inc. p. 154.
  3. ^ Inc, Ziff Davis (1996-05-28). PC Mag. Ziff Davis, Inc. p. 44.