Congeries:

A collection; an aggregation. source & source
from Latin; from congerere: to pile up; from gerere: to carry.

A repository of useful data structures

CircularList
DoublyLinkedList
FileDict, FileDotDict
LinkedList
PositionalList
UnionFind: QickFindUF, QuickUnionUF, WeightedQuickUnionUF, WeightedQuickUnionPathCompressionUF