| Name | Description | Type | Package | Framework |
| CastableAsUntypedAtomicOperation | Class | apache.vxquery.runtime.functions.castable | Apache VQuery | |
| CastToUntypedAtomicOperation | Class | apache.vxquery.runtime.functions.cast | Apache VQuery | |
| FineGrainedAtomicMap | FineGrainedAtomicMap is a special type of Map geared for use in Infinispan. | Interface | org.infinispan.atomic | Infinispan |
| CachedAtomicInteger | Class | org.apache.curator.framework.recipes.atomic | Apache Curator | |
| CachedAtomicLong | Class | org.apache.curator.framework.recipes.atomic | Apache Curator | |
| DistributedAtomicInteger | A counter that attempts atomic increments. | Class | org.apache.curator.framework.recipes.atomic | Apache Curator |
| DistributedAtomicLong | A counter that attempts atomic increments. | Class | org.apache.curator.framework.recipes.atomic | Apache Curator |
| DistributedAtomicNumber | Add delta to the current value and return the new value information. | Interface | org.apache.curator.framework.recipes.atomic | Apache Curator |
| DistributedAtomicValue | A distributed value that attempts atomic sets. | Class | org.apache.curator.framework.recipes.atomic | Apache Curator |
| UntypedAtomicValue | Class | org.exist.xquery.value | ExistDB | |
| DelAddAtomic | Each atomic element in the delete/add list of an operator both at compile time and run time is represented as an instance of this class. | Class | org.jscience.computing.ai.planning | JScience |