This specification describes technologies relating to software installation. In general, a method of installing software can include obtaining a first installation package distributed for installation on multiple different platforms, the first installation package including program content and package information, the package information including information stored in a platform independent format and useable in an installation sequence; converting the first installation package into a second installation package stored in a format native to a target platform, wherein the second, native installation package includes at least a portion of the program content and the information useable in the installation sequence; and initiating installation on the target platform with the second, native installation package.