Polylabel - algorithm to find the most distant point of polygon
KeyMonitor - named lock monitor
ReadWriteKeyMonitor - named read/write lock monitor
ReadWriteLock - read/write lock
FixedSizeQueue - thread-safe queue of fixed size
SimpleSpinLock - spin lock with Interlocked.CompareExchange
Int32Decomposed/Int64Decomposed - Int32/Int64 types with access to single bytes
BinaryTree - thread-safe binary tree
ConcurrentStack - lock free concurrent stack