title: Sequential nonlinear optimization libraries in C++ WITH constraints
body: <p>Are there any good libraries in c++ for sequential nonlinear optimization with constraints?</p>
  
  <p>I am looking for inequality constraints and/or upper and lower bounds.</p>
  
  <p>There is a <a href="https://projects.coin-or.org/Ipopt/" rel="nofollow">stackoverflow question</a> already for this but not all of them have constraints.</p>
  
  <p>I know of <a href="http://ab-initio.mit.edu/wiki/index.php/NLopt" rel="nofollow">NLopt</a>, but it doesn't work well for my specific problem. Are there any others?</p>
  
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  <p>I finally found the solution that i was looking for if any one else is interested <a href="https://projects.coin-or.org/Ipopt/" rel="nofollow">lpOpt</a></p>