Source: Wikipedia, "G-Collections", available under the CC-BY-SA License.
G-Collections is an English translator and distributor of Japanese bishōjo games. It was founded in 2001 by the Japanese bishōjo game maker CD Bros., and released at first Japanese titles and from 2002 on English localised titles. It is now part of the J-List/JAST USA/Peach Princess group of companies, owned by Peter Payne.
Publisher Website: www.g-collections.com/