Go! is a PHP 5.4 library that allows developers to add support for aspect-oriented programming (AOP) to their PHP applications. It doesn't require PECL extensions, Runkit, evals, or DI containers. The code with weaved aspects is fully readable and native, and can be easily debugged with XDebug. You can debug either classes or aspects. It can potentially be installed in every PHP application because you don't have to change the application source code at all. As an example, with the help of 10-20 lines of code it is possible to intercept all of the public, protected, and static methods in all classes of an application, and display the name and the arguments of each method during its execution.
Ding is a PHP framework that provides dependency injection (by Setter, Constructor, and Method), Aspect Oriented Programming, XML, YAML, Events support, and some JSR 250/330 annotations as bean definition providers, lightweight, can be deployed as a PHAR file, simple, and quick MVC, syslog, TCP client and server with non-blocking sockets, timers, and custom error, signal, and exception handling, PAGI integration (for the Asterisk gateway interface), and PAMI integration (for Asterisk management). It is similar to Java's Seasar and Spring.
Pytilities offers AOP and monkey-patching features for Python 3. Pytilities also offers other features such as help in delegating calls to an inner object, function overloading, some special descriptors, geometry classes, event dispatching classes, and more. The AOP features allow you to make reusable Aspect classes, (un)apply multiple aspects to an instance or class, add new attributes to an instance, and apply advice to all attribute access of an instance or class.
Java Debugging with Statement Aspects provides the possibility to skip certain statements from being executed during debugging. It lets you add your custom logic before and after execution of certain statements. It provides the possibility of tracing at the granularity of line numbers without touching the source code.