Programmable Logic/Debugging Designs

Debugging programmable logic designs is often a long and difficult task. HDLs give allow us to program PLDs with a the power of a higher level language. Unfortunately, the debugging of these designs is not as straight forward as debugging a C or Python program. There are some tools that help us in these departments, however. They are testbences, simulators, and integrated logic analyzers.
 * Testbenches
 * Simulators
 * Integrated Logic Analyzers (ILAs)