The organization has been in existence since 1973 and is "the most established and longest-lived playwrights' group in the area".
[1] It was founded by writers Steven Lydenberg, Allen Sternfield, and Saul Zachary.
[2] Some of the playwrights associated with the Platform in its early years are John O'Brien, Geralyn Horton, John Chatterton, Beverly Creasey, Tanya Contos, Sheldon Feldner, and Janet Neipris.
The Platform has met at various locations through the years, including Massachusetts College of Art, Hovey Players, Lasell College, Boston Playwrights' Theatre, the Cambridge Public Library, and the Woman's Club of Newton Highlands.
Playwrights' Platform has had several of its members go on to major success in the worlds of theater, film and television, such as Theresa Rebeck, Kirsten Greenidge, Matt Witten, and Rosanna Yamagiwa Alfaro.