If I want to check a program for memory leaks, what method should I use to go about this? What software is available and how do you use that software? I'd like to see if there is a memory leak occuring in some code I have here and I'm not really sure how to check it.
Thanks!
It depends on the language you're trying to profile.
There are C profilers that will replace the default memory allocators with instrumented ones, and probably a number of newer, better techniques - it's been a long time since I've used them. Take a look at this question.
For .Net, Red Gate makes a good profiler - I've used it, and it's well worth it.
I'm not sure what's available for java - a quick search indicates there are a couple of open source profilers.
I'm also not sure what's available for javascript, though I'm sure they exist.