by a company that had grown up with the product. The development partnership with Quintic also transferred to CAD Schroer. Under CAD Schroer, project Pegasus became the STHENO/PRO software, which was first launched in 2002. The Fourth generation of MEDUSA, known as MEDUSA4, was launched in 2004. It included a comprehensive revamp of the functionality, the development of a Qt-based GUI, extensive interfaces and integrations with third party systems and data formats, as well as porting to Linux. In 2005, CAD Schroer acquired its software development partner Quintic and founded CAD Schroer UK in Cambridge, MEDUSA’s home town. The company continues to develop and support the software. MEDUSA4 add-on applications and modules MPDS4: The MEDUSA4 PLANT DESIGN SYSTEM, a hybrid 2D/3D plant design and factory layout software suite with various modules covering all plant design disciplines and 3D visualisation software MEDEA: The MEDUSA Electrical Design Application MEDRaster Colour: Module for integrating and editing colour or monochrome raster data, such as scanned legacy drawings or photographs, into CAD designs MEDInfo: Web-based engineering information and document management for MEDUSA4 CADParts: Standard CAD parts library with optional update service MEDUSA4 3D PLUS: Sheet-based 3D modelling with optional Digital Terrain Modeller MEDUSA4 PARAMETRICS: Extensive parametrics functionality for design process automation MEDUSA4 SHEET METAL DESIGN: Powerful and flexible design of sheet metal parts MEDUSA4 P&ID: The complete solution for creating intelligent process and instrumentation diagrams MEDPro: MEDUSA4 and Pro/ENGINEER integration MEDLink: MEDUSA4 and Windchill PDMLink integration MED2SAP: MEDUSA4 and mySAP PLM integration MED2TC: MEDUSA4 and Teamcenter integration CADConvert Pro: Advanced DXF/DWG interface MEDUSA4 Personal MEDUSA4 Personal, launched by CAD Schroer in 2006, is a free 2D/3D CAD software for private use, which can be downloaded from the CAD Schroer website. Users have to register to receive a free 12-month license, which can be extended in perpetuity. MEDUSA4 Personal is a fully functional version which includes many features of the MEDUSA4 ADVANCED package (e.g. SMART Edit, basic 3D) as well as some additional add-on modules, such as the MEDRaster Colour image editing module, SMD Sheet Metal Design, and Parametrics. It is a multi-platform system available for Windows and several Linux distributions. Limitations Print with watermark Separate sheet format Free node-locked license is limited to 12 months, but renewable Sheet conversion to PDF/DXF/SHE for commercial use In August 2009, CAD Schroer introduced an eSERVICES portal, which allows users of the free version of MEDUSA4 to convert the