.NET 2.0 reflection-to-cache-based library, with an ASP.NET UI generation feature. Uses Dynamic IL to generate VERY fast accessors to properties, and allows direct get and set of objects to controls that allow for their edit or display in ASP.NET forms
Swing Spy is java based Swing/AWT spy agent that prints the widget under the cursor (like Spy++ for Windows/MFC and SWT Spy for Java-SWT). Download from the homepage: http://www.nenoff.com/swingspy/