DevExpress
DevExpress (Developer Express) is a software development company based in the United States. It produces coding assistance tools and components for Delphi, C++ Builder and Microsoft Visual Studio developers. The major part of its product line is VCL, .NET WinForms and ASP.NET components that replicate the UI of Microsoft Windows and Microsoft Office applications. DevExpress has won many industry awards for its products.
Telerik
Progress Telerik offers a leading platform for developing and deploying mission-critical business applications. The creator of the award-winning .NET and Kendo UI JavaScript user interface components/controls, reporting solutions and productivity tools, Progress Telerik has been providing the tools developers need to easily and efficiently build high-performant modern apps with outstanding UI for more than 20 years.
With free on-demand product training (refreshed with every major release) and unparalleled support provided by the same engineers who built the products, they ensure you are successful with their tools from the initial evaluation to release of your application.
Building a modern UI for web, desktop and mobile apps has never been easier.
VBeXpress.com
VBeXpress.com was founded in Ireland in 1997. They provide consultancy and software for building business solutions and have been developing code generators for Windows developers for almost five years. Their code generator for Visual Basic 6.0 has been used to help build 1000's of applications and websites across a wide range of businesses.
DPStudio
DPStudio is a privately-held software company based in United Kingdom and was formed in December 2009 with the purpose of providing software development consultancy, agile coaching services and building high-quality development tools for .NET developers.
Codename One
Codename One was founded by Shai Almog and Chen Fishbein with the purpose of making mobile device development possible and practical for all developers. They offer a complete mobile development solution covering all stages of development, design, debugging, simulation, deployment and analysis.