| Name | Description | Type | Package | Framework |
| AsyncCompletionStage | Turns CompletableFutures into fiber-blocking operations. | Class | co.paralleluniverse.fibers.futures | Quasar |
| AsyncListenableFuture | Turns Google Guava's ListenableFutures into a fiber-blocking operation. | Class | co.paralleluniverse.fibers.futures | Quasar |
| ChannelGroup | A grouping of channels for the purpose of resource sharing. | Class | co.paralleluniverse.fibers.io | Quasar |
| DefaultFiberScheduler | The default FiberScheduler used to schedule fibers that do not specify a particular scheduler. | Class | co.paralleluniverse.fibers | Quasar |
| Fiber | A lightweight thread. | Class | co.paralleluniverse.fibers | Quasar |
| FiberAsync | A general helper class that transforms asynchronous requests to synchronous (fiber-blocking) calls. | Class | co.paralleluniverse.fibers | Quasar |
| FiberExecutorScheduler | A fiber scheduler that uses a given Executor for scheduling. | Class | co.paralleluniverse.fibers | Quasar |
| FiberFactory | Creates new fibers on demand. | Interface | co.paralleluniverse.fibers | Quasar |
| FiberFileChannel | A fiber-blocking version of FileChannel. | Class | co.paralleluniverse.fibers.io | Quasar |
| FiberForkJoinScheduler | A ForkJoinPool based scheduler for fibers. | Class | co.paralleluniverse.fibers | Quasar |
| FiberInfo | Current information about a fiber returned by FibersMXBean. | Class | co.paralleluniverse.fibers | Quasar |
| FiberScheduler | A thread-pool based scheduler for fibers. | Class | co.paralleluniverse.fibers | Quasar |
| FiberServerSocketChannel | A fiber-blocking version of ServerSocketChannel. | Class | co.paralleluniverse.fibers.io | Quasar |
| FibersMXBean | An MXBean that monitors fibers scheduled by a single FiberScheduler. | Interface | co.paralleluniverse.fibers | Quasar |
| FiberSocketChannel | A fiber-blocking version of SocketChannel. | Class | co.paralleluniverse.fibers.io | Quasar |
| FiberUtil | Static utility methods for working with fibers. | Class | co.paralleluniverse.fibers | Quasar |
| FiberWriter | A callback used by Fiber. | Interface | co.paralleluniverse.fibers | Quasar |
| Joinable | Interface | co.paralleluniverse.fibers | Quasar | |
| RuntimeExecutionException | Similar to ExecutionException only as an unchecked, rather than a checked, exception. | Class | co.paralleluniverse.fibers | Quasar |
| RuntimeSuspendExecution | Class | co.paralleluniverse.fibers | Quasar | |
| SchedulerLocal | Class | co.paralleluniverse.fibers | Quasar | |
| Stack | Internal Class - DO NOT USE! (Public so that instrumented code can access it) ANY CHANGE IN THIS CLASS NEEDS TO BE SYNCHRONIZED WITH InstrumentMethod | Class | co.paralleluniverse.fibers | Quasar |
| Suspendable | Marks a method as suspendable. | Class | co.paralleluniverse.fibers | Quasar |
| SuspendExecution | An exception used to initiate the control transfer. | Class | co.paralleluniverse.fibers | Quasar |
| ThreadLocalSerializer | Class | co.paralleluniverse.fibers | Quasar | |
| TrueThreadLocal | A ThreadLocal that is local to the current thread, rather than Strand. | Class | co.paralleluniverse.fibers | Quasar |
| VerifyInstrumentationException | Class | co.paralleluniverse.fibers | Quasar | |