Tensor Network is a program I'm developing to implement tensor networks as defined in the physics literature, particularly the Multiscale Entanglement Renormalization Ansatz (MERA). A useful review article from 2011 can be found at [1]. The program is in very early stages, due to lack of time during the school year and my decision to leave graduate school. [1] http://arxiv.org/abs/1106.1082. This program compiles by default with clang, libc++, and libtcmalloc. GNU Scientific Library is *required*, and the unit tests utilize the Google Test framework and Google Mock. C++11 constructs are used extensively throughout this project. Currently GSL's internal cblas is used. Ideally, this should be replaced with a more optimized implementation. (In practice, the code has not reached the stage where the blas library would be hooked in.)