Methods, systems, and apparatus, including computer programs encoded on computer storage media, for distributed data management. One of the methods includes converting a standard specification for a software package into a custom specification for a software deployment tool that deploys the software package on one or more distributed computing systems, parsing source files and corresponding configuration files to determine configuration parameters and custom values, writing the determined configuration parameters into a custom template, and updating the custom specification with the determined custom values for the configuration parameters and information associated with the custom template.