The story
When the Atari Program Exchange (APX) was shut down by Atari CEO James J. Morgan in 1984, Gary Yost convinced Antic magazine's publisher, James Capparell, to create Antic Software. Yost contacted many of the programmers from APX to re-publish their works with Antic. The APX software was rebranded in mid-1984 as APX Classics from Antic. In 1985 the magazine insert was called Antic Arcade (despite including more than games). By 1986 it was branded The Catalog with the emphasis on Atari ST applications.
From Wikipedia’s article on Antic Software, shared under CC BY-SA 4.0.3