Vern Paxson wrote flex with the help of many ideas and much
inspiration from Van Jacobson.  Original version by Jef Poskanzer.

The fast table representation is a partial implementation of a design
done by Van Jacobson.  The implementation was done by Kevin Gong and
Vern Paxson.

In 2001, W. L. Estes took over as maintainer of flex.

John Millaway is a co-author of the current version of flex. He has
contributed a large number of new features, fixed a large number of
outstanding bugs and has made significant contributions to the flex
documentation.