nym>,
LispWorks, Clozure CL, <acronym>SBCL</acronym> and the Scieneer CL.

   <p>In general, you should work with the latest versions of each
implementation since those will usually be tested against recent
versions of CFFI more often and might include necessary features or
bug fixes. Reasonable patches for compatibility with earlier versions
are welcome nevertheless.

<h3 class="section">3.1 Limitations</h3>

<p>Some features are not supported in all implementations. 
<!-- TODO: describe these features her