compression - Various compression algorithms (MSZIP, lzxpress) dnspython - Python module for working with DNS. nss_wrapper - Wrapper for the user and group NSS API allowing the use of other data sources. popt - Command-line option parsing library replace - Provides replacements for standard (POSIX, C99) functions not provided by the host platform. socket_wrapper - Wrapper library allowing TCP/IP traffic to be redirected over Unix domain sockets. subunit - Utilities and bindings for working with the Subunit test result reporting protocol. talloc - Hierarchical pool based memory allocator tdb - Simple but fast key/value database library, supporting multiple writers torture - Simple unit testing helper library