| archive/tar | Package tar implements access to tar archives. |
| container/list | Package list implements a doubly linked list. |
| crypto/sha512 | Package sha512 implements the SHA-384, SHA-512, SHA-512/224, and SHA-512/256 hash algorithms as defined in FIPS 180-4. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/appc/spec/schema | Package schema provides definitions for the JSON schema of the different manifests in the App Container Specification. |
| github.com/appc/spec/schema/types | Package types contains structs representing the various types in the app container specification. |
| hash | Package hash provides interfaces for hash functions. |
| io | Package io provides basic interfaces to I/O primitives. |
| io/ioutil | Package ioutil implements some I/O utility functions. |
| path/filepath | Package filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |