Utilities contains miscellaneous convenience functions for working with files, strings, memory, and other things. The following sets of functionality are included:

 - Allocator: A generic interface for a memory allocator. By default, calls malloc/calloc/realloc/free.
 - Arena: A memory allocator designed for non-fragmentation and ease of cleanup, particularly suited for small short-lived allocations
 - ArenaAllocator: An implementation of Allocator using an Arena object
 - AssociationLookup: A data structure for efficiently representing arbitrary associations between pairs of integers
 - AsyncTaskQueue: Multithreaded work dispatching
 - Atom: Pointer-comparable strings
 - AutoFreePool: Deferred memory deallocation
 - Base64: Encoding and decoding of quadrosexagesimal
 - ChunkArray: A data structure for organizing and indexing variable size data blobs within one contiguous allocation
 - EventDispatcher: Notification dispatch table
 - FileBundle: A simple container format for named and indexed chunks of data
 - FixedIntervalRunLoop: Mechanism for decoupling state updates from screen updates
 - IndexSelection: Set of unsigned ints with various operations suited for representing a multi-item selection in a list
 - IndexPairSelection: Equivalent of IndexSelection for pairs of related indexes
 - IOUtilities: Miscellaneous functions relating to memory and file I/O
 - Log: A centralized facility for customizable information logging
 - ObjectPool: A data structure for managing allocation and reuse of arbitrary objects
 - Queue: A simple data structure for managing an ordered list of pointers
 - Ranrot: Pseudo-random number generator (see also PCGRandom in gamemath for a potentially better one)
 - ReferenceCount: Pointer ownership tracking, invoking a callback when all owners have released the pointer
 - RingBuffer: An automatically-resizing circular buffer
 - SparseEnumerableArray: An unordered list of pointers made to be efficient for frequent addition and deletion of items
 - StableIndexArray: A resizable data array with constant time append, remove, and access operations, and stable item identifiers
 - StrideArray: A facility for managing a list of items with a specified size but an unspecified type
 - StringDiff: A way to represent a delta between two strings using at most one heap allocation
 - UndoTree: General mechanism for storing and traversing undo and redo states, optionally with branching timelines. Subclass UndoStateDelta and override revert() and apply() to implement.
 - UndoUtilities: List comparison for generating reversible lists of commands for adding, removing, and modifying items
 - UTFUtilities: Functions for working with Unicode text representations