Macaulay2 Macaulay2 is a system for computing in commutative algebra, algebraic geometry and related fields. The system was originally written by Dan Grayson and Mike Stillman. David Eisenbud joined the project a number of years ago, and many users are writing packages for the system, and some are contributing source code. See our web page http://www.macaulay2.com for more details and for downloading binary releases. The source code is available at https://github.com/Macaulay2/M2. One uses the program "git" to access it. For brief instructions about how to use git, see https://github.com/Macaulay2/M2/wiki/GitHowTo. Report bugs via the github issue tracker at http://github.com/Macaulay2/M2/. The directory containing this file is the top level directory of the directory tree that contains the following subdirectories: M2 The subdirectory "M2" contains everything needed by a user to build Macaulay2, and the file "M2/INSTALL" gives instructions for doing so. bugs The subdirectory "bugs" is where we keep track of older bug reports.