what are the available versions of Clipper were or is ?

From Nantucket Corporation; the "seasonal versions", billed as "dBase compilers"

• Nantucket Clipper Winter'84 - released May 25, 1985
• Nantucket Clipper Summer'85 - released 1985
• Nantucket Clipper Winter'85 - released January 29, 1986
• Nantucket Clipper Autumn'86 - released October 31, 1986
• Nantucket Clipper Summer'87 - released December 21, 1987

From Nantucket Corporation; Clipper 5

• Nantucket Clipper 5.00 - released 1990
• Nantucket Clipper 5.01 - released April 15, 1991
• Nantucket Clipper 5.01 Rev.129 - released March 31, 1992

and from Computer Associates; CA-Clipper 5

• CA Clipper 5.01a -
• CA Clipper 5.20 - released February 15, 1993
• CA-Clipper 5.2a - released March 15, 1993
• CA Clipper 5.2b - released June 25, 1993
• CA-Clipper 5.2c - released August 6, 1993
• CA Clipper 5.2d - released March 25, 1994
• CA-Clipper 5.2e - released February 7, 1995
• CA Clipper 5.30 - released June 26, 1995
• CA Clipper 5.3a - released May 20, 1996
• CA Clipper 5.3b - released May 20, 1997