From the publisher's website:
"Purple Sorcerer Games is your source for exciting, affordable, fun-to-play adventures compatible with the Dungeon Crawl Classics RPG from Goodman Games.
What is Dungeon Crawl Classics?
Return to the glory days of fantasy with the Dungeon Crawl Classics Role Playing Game. Adventure as 1974 intended you to, with modern rules grounded in the origins of sword & sorcery. Fast play, cryptic secrets, and a mysterious past await you."
These guys obviously publish Modules compatible with Goodman Games Dungeon Crawl Classics (DCC) Roleplaying Game. The first module in a 3 part series "Perils of the Sunken City " is currently available from RPG Now. They also have Battlemaps, Paper Miniatures, Sheets and Charts for the first module available for download on their website.
In addition, they also have a couple of Software Tools designed for DCC available on their site. A character generator and a Dice Tool.