The beta versions of EcosimPro version 5.0 and PROOSIS version 3.0 are available for users of these tools. These new versions are an important milestone because they include some profound modifications that users will find enormously helpful. The modifications include a new graphical tool for the construction of simulation schematic diagrams, palettes of symbols by categories, greater ease of use (a single work view instead of three), library encryption, new classes for the direct reading of XML and ASCII files, increased speed in all actions, direct link to Subversion to monitor the library versions, new capabilities for teamwork, solving of more than 300 bugs found by users, new tools for the automatic compilation of libraries and workspaces, new valid Microsoft C++ 2010 compiler, etc.