| Name | Type | Framework | Framework Type | Detail |
| AdjustableSemaphore | Class | Apache Solr / Lucene | Search | Detail |
| Semaphore | Class | Java SE | General | Detail |
| Semaphore | Class | DBUnit | Testing | Detail |
| SemaphoreControlledChannel | Class | DBUnit | Testing | Detail |
| SemaphoreFailException | Class | Apache OfBiz | E-Commerce | Detail |
| SemaphoreWaitException | Class | Apache OfBiz | E-Commerce | Detail |
| ServiceSemaphore | Class | Apache OfBiz | E-Commerce | Detail |
| TimedSemaphore | Class | Apache Commons | General | Detail |
