title: Implementing an Excel-like formula engine
body: <p>I am looking for a professional tool that will enable me to implement an excel like formula engine.</p>
  
  <p>I require support for custom functions, an editor (in winforms or WPF) which gives a descent user experience (Intellisense , auto complete, partial evaluation of the formula etc...)</p>
  
  <p>All I could find so far are just back-end projects such as:</p>
  
  <p><a href="http://www.codeproject.com/Articles/17853/Implementing-an-Excel-like-formula-engine" rel="nofollow">http://www.codeproject.com/Articles/17853/Implementing-an-Excel-like-formula-engine</a></p>
  
  <p><a href="http://www.codeproject.com/Articles/57264/Eval3-wrapper" rel="nofollow">http://www.codeproject.com/Articles/57264/Eval3-wrapper</a></p>
  
  <p>And those do not provide any client side , only backend engine.</p>