Runtime code instrumentation
Conditional breakpoints can be used to instrument code with user-specified code.
File Exchange
export_fig
The export_fig utility enables publication-quality Matlab plotting output.
checkClass
The checkClass utility enables easy listing of Java class methods.
xlswrite for Mac, Linux
Several Matlab utilities enable reading/writing spreadsheet data (including XLS files) in Macs, Linux.
Specialized Matlab plots
The new MathWorks Plot Gallery provides access to some plotting examples on the File Exchange. Numerous others are available, extending the customizability of Matlab graphics.