1931. metaprogramming
      Things that help you analyze and write code (code walkers, code transformers, introspection libraries, etc.)
1932. MetaSpec
      The Common Lisp Metaspec is a translation of the TEX source files of the Common Lisp Standard rev 15.17R (X3J13/94-101R) into a s-expression document format (sdoc) structured around a (NODE-TYPE PROPERTY-PLIST NODE-CHILD*) form
1933. metatilities
      Everyone needs their own set of utilities… These are Gary King's
1934. metatilities-base
      Everyone needs their own set of utilities..
1935. metering
      The Metering System is a portable Common Lisp code profiling tool
1936. method-combination-utilities
      Various utilities to make use and creation of custom method combinations easier
1937. method-versions
      A Common Lisp library for dispatching generic methods based on the value of a global parameter rather than on one of the required parameters
1938. mexpr
      mexpr is an Infix syntax library
1939. Mezzano
      Mezzano is an open-source operating system written in Common Lisp
1940. MGL
      MGL is a machine learning for backpropagation neural networks, boltzmann machines, gaussian processes and more

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