ESTsoft Corp. is a Korea-based company engaged in the Internet software business and Internet game business. It software business provides various software products, such as ALTools, a utility software for compression and file transfer; InternetDISK, which provides online Web storage solutions; SecureDisk, an enterprise-wide file security solution, and BIZHARD, which provides Web storage service for small and medium business units. Its Internet game business provides CABAL Online and Howling Sword, which are action massive multi-player online role playing games (MMORPGs). It also provides other Internet-based services, such as portal and location-based services, as well as advertising services. As of December 31, 2011, the Company had eight subsidiaries and one affiliated company.