libvisio is a library and a set of tools for reading and converting MS Visio diagrams. libvisio requires boost, gperf, icu, librevenge, libxml2 and perl to build. Most up to date code is available from Git repository at libreoffice.org (https://gerrit.libreoffice.org/gitweb?p=libvisio.git) or the mirror at freedesktop.org (http://cgit.freedesktop.org/libreoffice/contrib/libvisio/). See http://wiki.documentfoundation.org/DLP/Libraries/libvisio for more information. The library is available under MPL 2.0 license.