title: What are the key differences between IDA and x64dbg?
body: <p><a href="https://www.hex-rays.com/products/ida/" rel="noreferrer">IDA</a> pro ,<a href="https://x64dbg.com/#start" rel="noreferrer">x64Dbg</a>, <a href="http://www.ollydbg.de/" rel="noreferrer">olldbg</a> &amp; <a href="https://blogs.msdn.microsoft.com/windbg/2017/08/28/new-windbg-available-in-preview/" rel="noreferrer">windbg</a> are used to Reverse Engineering purposes(as a Dissembler) and debugging.</p>
  
  <ul>
  <li>What are the main differences among them? when to use each?</li>
  </ul>