De Voorkant has released an iOS 4 universal update to its archive file management application, iUnarchive. Originally released as an iPad application, iUnarchive 1.2.1 is now a universal app that can take advantage of the file management features of iOS 4. iUnarchive allows users to open and display the content of compressed files from other apps such as Mail or Safari using the built-in “Open In” option found in iOS 4. Users can then open individual files in other supported applications or open any additional nested archives contained within the original file. iUnarchive can open ZIP, RAR, 7-ZIP, TAR, GZIP, bz2, LhA and StuffIt archives, including password-protected files and can preview contained JPG, PNG, GIF, XLS, DOC, PPT, PDF, RTF and iWork documents as well as text files and syntax-highlighted programming language source files. iUnarchive requires iOS 3.2 or later on the iPad or iOS 4 on the iPhone and iPod touch. It is currently available from the App Store for $1 for a limited time and is a free update for users of the iPad version.