| Name | Description | Type | Package | Framework |
| CompositeExpression | CompositeExpression is a Composite expression made up of several Expression objects which are concatenated into a single String. | Class | org.apache.commons.jelly.expression | Apache Commons |
| ConstantExpression | ConstantExpression represents a constant expression. | Class | org.apache.commons.jelly.expression | Apache Commons |
| Expression | Expression represents an arbitrary expression using some pluggable expression language. | Interface | org.apache.commons.jelly.expression | Apache Commons |
| ExpressionFactory | ExpressionFactory is a factory of Expression objects. | Interface | org.apache.commons.jelly.expression | Apache Commons |
| ExpressionSupport | an abstract base class for Expression implementations which provides default implementations of some of the | Class | org.apache.commons.jelly.expression | Apache Commons |
| JexlExpression | expression which fully supports the Expression Language in JSTL and JSP along with some extra features like object method invocation. | Class | org.apache.commons.jelly.expression.jexl | Apache Commons |
| JexlExpressionFactory | Represents a factory of Jexl expression which fully supports the Expression Language in JSTL and JSP. | Class | org.apache.commons.jelly.expression.jexl | Apache Commons |
| XPathExpression | An expression which returns an XPath object. | Class | org.apache.commons.jelly.expression.xpath | Apache Commons |