Syncro Soft
Syncro Soft is a privately held software company founded in 1998 with a large area of expertise in XML technologies: XML Schema, Relax NG, Schematron, XSLT, XPath and XQuery. The main product Oxygen XML Editor provides the best coverage of the today XML technologies; it complies with the established standards released by W3C and other organizations and enhances developer productivity through an intuitive and innovative XML IDE. Syncro Soft is a member of the W3C. Another product developed by Syncro Soft is Syncro SVN Client (a Subversion client).
Xtremesoft
Xtremesoft maximizes the availability of your custom built Microsoft applications built on, COM+, and .NET Enterprise Services. The focus is on monitoring, alerting and managing business transactions. This includes metrics on packages, applications, components, and their methods.
Wintellect
Wintellect is a consulting, debugging and training firm dedicated to helping companies build better software, faster. They are Microsoft's largest developer training vendor. Wintellect's offerings include full lifecycle application development, architecture, analysis and design services, UI/UX design, project management, debugging and performance tuning, database design and development, as well as in-depth, multi-day .NET on-site and open enrollment training.