GroupDocs
GroupDocs creates easy to use, comprehensive online document management APIs for .NET, Java and Cloud, as well as a range of Cloud apps that improve document collaboration for organizations of any size. GroupDocs saves developers and end users time and money by offering a complete and powerful set of document management APIs allowing users to view, sign, annotate, compare, convert and assemble documents in a wide variety of formats, including Microsoft Word, Excel, PowerPoint and Visio, as well as Adobe Acrobat PDF and many image formats. Flexible workflows and easy-to-use, customizable user interfaces are part of the package.
Rebex
The Rebex mission is to provide top quality components for .NET developers (https://www.rebex.net) and a Lightweight SFTP / SCP / SSH Server for Windows (https://www.rebex.net/buru-sftp-server/). Rebex has been creating and selling .NET components worldwide since 2002. They have been developing software for .NET platform since the first public beta version of .NET. Rebex is located in Prague, Czech Republic. Their company also provides software development and outsourcing services for system integrators in the Czech Republic.
Muhimbi
Muhimbi Ltd is a provider of shrink-wrapped solutions for the SharePoint market. All Muhimbi's products, including PDF Converters, URL Shorteners and Audit Log Management Tools, are designed for both MOSS and WSS 3 and are available in a number of different languages. With its strong focus on usability Muhimbi empowers SharePoint users.