Which is the best among Visual Prolog, SWI-Prolog, and others?

Question

I have searched the Internet and stackoverflow.com, but got nothing.

Who can give me a comparison between various Prolog compilers/IDEs such as Visual Prolog and SWI-Pro

Answer 1

You might get a good start by looking at this comparison of Prolog implementations. Since you haven't made clear what your goals are, what platform you're targeting, what your requirements are, what your experience is, etc. there's not much more information I can provide.

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Edited to add:

Wikipedia has a good comparison chart of Prolog implementations. That should assist you in your decision making process.