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TAO is now available as part of the PETSc distribution, please visit PETSc at http://www.mcs.anl.gov/petsc

The last separate TAO release (Version 2.2.2, compatible with PETSc 3.4.x) of TAO can be obtained by entering your email address below (so that you can be informed of future TAO software updates) and downloading the compressed tar file that contains the software.

Check the documentation for the latest installation instructions.

TAO 2.2.2 and earlier are distributed under an open source license [pdf]