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SFTP Server Component for .NET C# and VB.NET

Start receiving files from any SSH client easily

A part of the Ultimate FTP Expert Package, Ultimate SFTP Server helps you create your own SFTP & SCP server to provide secure remote file system access over an SSH channel using the SFTP protocol with a few lines of code. Intuitive API and compatible with many SFTP, SCP and SSH clients including the Ultimate SFTP client library.

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Support SSH, SFTP and SCP

The Ultimate SFTP Server makes it easy to launch your own SFTP or SCP server, host key, add users, open desired ports with just a few lines of code. It also supports outgoing SSH port forwarding which allows clients to establish TCP tunnels through the SSH, SFTP or SCP server.

It provides the following unique features:
  • Supports the SFTP
  • Supports the SCP
  • Supports the SSH shell server
  • Supports SSH port forwarding

Support for IPv6, the next generation Internet protocol

IPv6 (Internet Protocol version 6), the next-generation protocol designed by the IETF (Internet Engineering Task Force), will gradually replace the current version of the Internet Protocol, IPv4.

With Ultimate SFTP Server Component, users have an integrated service assurance solution that will provide them with SFTP and SCP server capabilities in mixed IPv4 and IPv6 environments. This helps organizations with the adoption of and the transition to IPv6 by making the management of such networks seamless.


.NET Technology

By using 100% managed code written in C#, the Ultimate SFTP Server component takes advantage of the numerous built-in features of the .NET Framework to enhance performance, moreover, the component is CLS compliant, and it does not use any unsafe blocks for minimal permission requirements. In addition, the component is highly compatible with Microsoft ClickOnce.


Supports many .NET Platforms

Ultimate SFTP Server Component for .NET supports the following platforms:
  • Windows Forms
  • Web Forms
  • Web Services
  • WPF

In addition, it is also possible to use the component in PowerShell - Microsoft’s new command console and scripting language.

Ultimate SFTP Server is fully compatible with Visual Studio 2005 to 2017 (.NET 2.0 to .NET 4.6.x). As a benefit, you are always up-to-date with Microsoft's Technologies when using our products.


Supports event-driven (Asynchronous) and blocking (Synchronous) Design

Most applications written with the SFTP Server component will be synchronous. Synchronous method gives you the ease-of-use, but it can only returns the control back to the caller after it has finished, meaning that it blocks the execution of the caller for a period of time. Using synchronous method is recommended when you only need to execute one SFTP Server operation at a time.

You might decide that your design requires an asynchronous operation when it is needed to manage email messages simultaneously. Asynchronous methods provide a great deal of power. Asynchronous method is executed on a thread separate from the calling thread. Such operation is useful when an operation is time consuming and other codes need to execute without waiting for the initial operation to complete. In addition, the user interface will be most responsive when asynchronous methods are used.



The component has been designed with a great degree of flexibility and can be used with a wide variety of programming languages and different types of development environments. Available as a managed .NET class, it is fully supported by languages such as Visual Basic, Visual C#, J#, Managed C++, Borland C# Builder, and Delphi.


Fully Documented

As important as functionality, features and stability are, comprehensive documentation is equally as important to the application developer. This is why the Ultimate SFTP Server for .NET product includes a Developer's Guide and a complete Technical Reference which documents every property, method and event supported by the component. A printable version of the documentation is included with the product, as well as context-sensitive online help which can be accessed directly from within the development environment.


Complete sample applications in VB.NET, C#, and ASP.NET

In addition to the fully documented Developer's Guide and a complete Technical Reference, Ultimate SFTP Server component also includes a number of samples with full source code which help you become familiar with the features of the component and provide code which you can re-use in your own applications.



ComponentPro understands today's software development requirements which often require support for multiple operating systems and different programming languages. As with all ComponentPro components, the product is licensed to a single developer, and applications built using the SFTP Server component can be redistributed to as many end-users as needed without additional royalties or runtime licensing fees. Developers are also permitted to install the product on different development systems as long as they are the only one using it and there is no chance that it can be used by more than one developer at the same time.



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