| Name | Description | Type | Package | Framework |
| JavassistProxifier | Javassist implementation for Proxifier. | Class | br.com.caelum.vraptor.proxy | VRaptor |
| JavassistClassTransformer | Enhance the classes allowing them to implements InterceptFieldEnabled This interface is then used by Hibernate for some optimizations. | Class | org.hibernate.bytecode.internal.javassist | Hibernate ORM |
| JavassistHelper | Class | org.hibernate.bytecode.instrumentation.internal.javassist | Hibernate ORM | |
| JavassistInstrumenter | Strategy for performing build-time instrumentation of persistent classes in order to enable field-level interception using Javassist. | Class | org.hibernate.bytecode.buildtime.internal | Hibernate ORM |
| JavassistLazyInitializer | A Javassist-based lazy initializer proxy. | Class | org.hibernate.proxy.pojo.javassist | Hibernate ORM |
| JavassistProxyFactory | A ProxyFactory implementation for producing Javassist-based proxies. | Class | org.hibernate.proxy.pojo.javassist | Hibernate ORM |
| JavassistPropertyStyle | PropertyStyle for environments that use JavaBeans and have Javassist available. | Class | org.metawidget.inspector.impl.propertystyle.javassist | MetaWidget |
| JavassistInvocation | A Javassist-based Invocation implementation. | Class | org.apache.commons.proxy2.javassist | Apache Commons |
| JavassistProxyFactory | Class | org.apache.commons.proxy2.javassist | Apache Commons | |
| JavassistHelper | Helper methods for Javassist functionality. | Class | org.slf4j.instrumentation | SLF4J |
| JavassistHelper | Class | fiji | Fiji | |
| JavassistAdapter | Class | org.reflections.adapters | Reflections | |