The DL series was started by the company Delta Labs, publisher of a popular range for Ataris CDs (Alpha, Omega, Transmission and others). This series was started late in the ST’s life cycle and features therefore more modern applications. Delta Labs later went into the business selling ink for printers, but the company never forget its Atari roots: At Deltalabs.biz you can download their CDs, the CD magazine Revolution and various PD series (J, AM, Pool, GFA-Club, DL, Kontrast, TT).