tools have no dependency on the execution platform, The kernel itself depends on the execution platform. COTS specification tools for DF specification currently include PRESAGIS VAPS XT 661 Toolkit, SCADE Solutions for ARINC 661 Compliant Systems, and DiSTI's GL Studio ARINC 661 Toolkit. Ansys (at the time Esterel Technologies) announced on October 13, 2010, the availability of SCADE Solutions for ARINC 661 in 2011. SCADE Solutions for ARINC 661 allow creating both ARINC 661-compliant CDS and UA. For CDS developers, the toolchain features a complete customizable ARINC 661 compliant model-based widgets library and the automated generation of a portable ARINC 661 server, compliant with the DO-178B/DO-178C safety objectives up to level A. For UA developers, the toolchain features the model-based design and generation of DFs and the automatic generation of communication code between SCADE Suite UA models and the ARINC 661 Server. The GL Studio ARINC 661 Toolkit is a plug-in to GL Studio HMI Toolkit that delivers a set of pre-existing customizable widgets, a DF Generator, CDS, Communication Libraries, and a User Application Generator. PRESAGIS introduced the first COTS ARINC 661 development tool which allows creation of Widgets, Layers, DF Generation and embeddable real-time COTS CDS kernel with DO-178B/C certification artifacts. Because of the burden of Avionics software certification, the kernel must be embedded in a DO-178-compliant environment. Flexible Software Solutions introduced COTS developing, testing and analysis tools for ARINC 661 protocol at the beginning of 2012. The UA Accelerator software tool is used to develop ARINC 661 user applications while the UA Emulator software tool is used to test and debug UA and CDS ARINC 661 messaging. This technology and related products has since been acquired by PRESAGIS See also Model View Controller Model User interface markup languages Cockpit display system Avionics software References External links Presagis Complete CDS and UA Solutions for ARINC 661 Development web page Ansys SCADE Solutions for ARINC 661 Compliant Systems Understanding ARINC 661 ARINC 661 Open Source Server project ARINC standards Graphical user interfaces