Top 20 NuGet concurrent Packages

A concurrency and state library for .NET, shines in net call services.
Represents a thread-safe collection of keys and TaskCompletionSource{T} as values.
DequeNET (pronounced Deck Net) provides a concurrent lock-free deque C# implementation. A deque, or double-ended queue, is a data structure that allows insertion and removal of items on both ends. ConcurrentDeque<T> supports 6 operations in constant time O(1): PushRight, PopRight, PeekRight, PushLef...
FASTER is a fast concurrent persistent log and key-value store with cache for larger-than-memory data.
Collection of useful classes for your .NET application: Object Pool, Thread Pool, Queue Async Processor, BlockingQueue, DiskQueue, ThreadSetManager, Throttling, Semaphore, EntryCounteringEvent, Collections, ReadOnlyCollections, IoC, WeakEvent and other.
Observable Concurrent Queue based on the classic concurrent queue (System.Collections.Concurrent.ConcurrentQueue) Allows to raise events when the queue content is changed with the same events as ObservableCollection
Package Description
CB.System is a collection of common classes to solve frequently occurring challenges according to System.*.
Message processing framework. Parallel when different business key, serial when the same one.
DynaLock is a library to create and manage locks dynamically in run-time in concurrent software, DynaLock hides all concurrency complexities in distributed systems. Please visit DynaLock's github page for more information. https://github.com/saeedmaghdam/DynaLock
A strict, fast and mostly lock-free Software Transactional Memory (STM) for .NET
Commands simplifies coordination of asynchronous and synchronous activities. It works with both task and non-task-based operations. The library is built upon class Command, which represents an action. A Command may be run synchronously or asynchronously, and may be aborted. ParallelCommands, itself...
High performance, thread-safe in-memory caching primitives for .NET.
Pipes is a concurrency abstraction. To learn how to use them, please visit the project home page at: https://github.com/michaelbradley91/Pipes
A cross-platform extension to the default set of collections in the System.Collections namespace providing generic array-based lists and dictionaries.
Helpers for asynchronous programming
a library with concurrent collections