• Collection - A collection of elements.
• IList - Read-only ordered collection of elements.
• List - Ordered collection of elements.
• MapCollection - Base interface for associative collections.
• Set - Unordered collection of unique elements.

• Array - Fixed-size contiguous array.
• ArrayList - Resizable array list.
• ArrayListSync
• HashMap - Hash map implementation.
• HashMapSync - Thread-safe hash map implementation.
• HashSet - Hash set implementation.
• ImmutableList - Immutable homogeneous ordered collection.
• Map - Balanced binary tree map.
• MapSync - Thread-safe balanced binary tree map.
• Tuple - Immutable positional tuple.