3. Languages and frameworks

Since the late 1990s, when the concept of aspect was first put forward, numerous aspect-oriented programming languages have been proposed. These languages are based on existing languages such as Java, C++, C, C#, Smalltalk, PHP, Python and COBOL. The Wikipedia page on aspect-oriented programming lists around twenty such languages. In the remainder of this paragraph, we'll present the two approaches that have been most successful among IT developers: the AspectJ language and the Spring AOP framework.