Packages 
Package Description
co.paralleluniverse.actors
Quasar Actors
co.paralleluniverse.actors.behaviors
Standard behavior actors (Server, EventSource, Supervisor)
co.paralleluniverse.fibers
Fibers - lightweight threads
co.paralleluniverse.fibers.futures
Common future implementations as fiber-blocking operations
co.paralleluniverse.fibers.io
Fiber-blocking NIO
co.paralleluniverse.strands
Strands - abstractions over fibers and threads
co.paralleluniverse.strands.channels
Channels - a CSP (Communicating Sequential Processes) construct
co.paralleluniverse.strands.channels.reactivestreams
Reactive Streams
co.paralleluniverse.strands.channels.transfer  
co.paralleluniverse.strands.concurrent
Concurrency primitives for strands - ports of java.util.concurrent classes compatible with strands
co.paralleluniverse.strands.dataflow