Quote Originally Posted by EsperPrimal View Post
what is a parser?
Simply, a Parser is an application that measures the amount of damage a player does over a specified period of time, which gives you your 'Damage per second.' That's the most base people use for it.

There are other applications of the most popular one - ACT - such as Healing per second, tracking how people used their cooldowns, seeing what kind of damage people died to (Great for seeing if there was lack of a Mitigative CD from a tank or if it was a shot-hit etc.)

Basically, it's a tool that measures and presents information in a cleaner and easier-to-digest manner than the Combat Log.