title: C++: what regex library should I use?
body: <p>I'm working on a commercial (not open source) C++ project that runs on a  linux-based system.  I need to do some regex within the C++ code.  (I know:  I now have 2 problems.)</p>
  
  <p>QUESTION:  What libraries do people who regularly do regex from C/C++ recommend I look into?  A quick search has brought the following to my attention:</p>
  
  <p>1) Boost.Regex (I need to go read the Boost Software License, but this question is not about software licenses)</p>
  
  <p>2) C (not C++) POSIX regex (#include &lt;regex.h&gt;, regcomp, regexec, etc.)</p>
  
  <p>3) <a href="http://freshmeat.net/projects/cpp_regex/" rel="noreferrer">http://freshmeat.net/projects/cpp_regex/</a>  (I know nothing about this one; seems to be GPL, therefore not usable on this project)</p>